IKEA of Sweden VALLHORN Wireless Motion Sensor

Hi all,

Does anyone have an idea why this sensor gets periodic spikes of +600lx especially at night when it’s pitch dark - it’s playing hell with my lighting automation, it keeps causing the lights to turn on when they shouldn’t! :slight_smile:

It’s less than a month old, is using a quality brand of alkaline batteries, and seems to be working fine for everything else as far as I can tell.

I’ve attached the .csv of some history should anyone like to take a look and make a suggestion.

Regards.

Summary
entity_id,state,last_changed
sensor,0,2025-10-12T23:00:00.000Z
sensor,625,2025-10-12T23:38:46.627Z
sensor,0,2025-10-12T23:39:34.703Z
sensor,625,2025-10-12T23:53:10.274Z
sensor,0,2025-10-12T23:53:40.095Z
sensor,625,2025-10-13T00:01:53.148Z
sensor,0,2025-10-13T00:02:22.967Z
sensor,2,2025-10-13T00:08:07.534Z
sensor,0,2025-10-13T00:08:37.353Z
sensor,624,2025-10-13T00:48:52.925Z
sensor,0,2025-10-13T00:49:22.743Z
sensor,624,2025-10-13T01:08:46.983Z
sensor,0,2025-10-13T01:09:16.804Z
sensor,623,2025-10-13T02:36:24.642Z
sensor,0,2025-10-13T02:36:54.460Z
sensor,623,2025-10-13T03:16:12.709Z
sensor,0,2025-10-13T03:16:42.528Z
sensor,621,2025-10-13T05:33:34.405Z
sensor,0,2025-10-13T05:34:04.224Z
sensor,623,2025-10-13T06:36:11.251Z
sensor,0,2025-10-13T06:36:41.069Z
sensor,624,2025-10-13T06:41:02.478Z
sensor,0,2025-10-13T06:41:32.298Z
sensor,2,2025-10-13T06:43:57.213Z
sensor,3,2025-10-13T06:51:43.197Z
sensor,2,2025-10-13T06:54:37.924Z
sensor,3,2025-10-13T06:55:36.178Z
sensor,4,2025-10-13T06:59:00.025Z
sensor,5,2025-10-13T07:09:11.596Z
sensor,4,2025-10-13T07:09:41.415Z
sensor,5,2025-10-13T07:10:11.237Z
sensor,6,2025-10-13T07:13:04.583Z
sensor,5,2025-10-13T07:13:34.400Z
sensor,6,2025-10-13T07:14:04.219Z
sensor,7,2025-10-13T07:15:30.194Z
sensor,11,2025-10-13T07:20:19.045Z
sensor,10,2025-10-13T07:20:48.862Z
sensor,11,2025-10-13T07:21:18.684Z
sensor,12,2025-10-13T07:22:24.844Z
sensor,13,2025-10-13T07:23:23.090Z
sensor,12,2025-10-13T07:23:52.910Z
sensor,11,2025-10-13T07:25:19.584Z
sensor,12,2025-10-13T07:26:17.829Z
sensor,11,2025-10-13T07:27:16.069Z
sensor,634,2025-10-13T07:30:39.926Z
sensor,13,2025-10-13T07:31:09.745Z
sensor,12,2025-10-13T07:34:03.778Z
sensor,13,2025-10-13T07:35:02.024Z
sensor,12,2025-10-13T07:36:29.388Z
sensor,13,2025-10-13T07:38:25.878Z
sensor,12,2025-10-13T07:40:22.368Z
sensor,13,2025-10-13T07:41:20.613Z
sensor,14,2025-10-13T07:43:46.227Z
sensor,15,2025-10-13T07:46:40.963Z
sensor,16,2025-10-13T07:47:10.783Z
sensor,17,2025-10-13T07:51:32.187Z
sensor,19,2025-10-13T07:52:30.433Z
sensor,18,2025-10-13T07:55:54.291Z
sensor,19,2025-10-13T07:56:24.111Z
sensor,20,2025-10-13T08:01:14.641Z
sensor,21,2025-10-13T08:03:40.263Z
sensor,22,2025-10-13T08:08:02.377Z
sensor,23,2025-10-13T08:09:29.742Z
sensor,24,2025-10-13T08:11:55.354Z
sensor,25,2025-10-13T08:13:22.724Z
sensor,26,2025-10-13T08:15:55.427Z
sensor,27,2025-10-13T08:16:25.248Z
sensor,28,2025-10-13T08:18:49.754Z
sensor,27,2025-10-13T08:20:50.448Z
sensor,28,2025-10-13T08:22:02.292Z
sensor,27,2025-10-13T08:23:00.537Z
sensor,28,2025-10-13T08:24:27.905Z
sensor,25,2025-10-13T08:24:45.594Z
sensor,27,2025-10-13T08:25:15.474Z
sensor,28,2025-10-13T08:26:15.045Z
sensor,29,2025-10-13T08:27:14.682Z
sensor,30,2025-10-13T08:29:14.270Z
sensor,29,2025-10-13T08:30:12.514Z
sensor,28,2025-10-13T08:30:21.240Z
sensor,27,2025-10-13T08:30:51.041Z
sensor,29,2025-10-13T08:31:48.713Z
sensor,30,2025-10-13T08:32:18.530Z
sensor,29,2025-10-13T08:32:48.349Z
sensor,28,2025-10-13T08:33:18.166Z
sensor,27,2025-10-13T08:33:47.985Z
sensor,26,2025-10-13T08:36:39.932Z
sensor,27,2025-10-13T08:37:38.173Z
sensor,28,2025-10-13T08:39:05.539Z
sensor,29,2025-10-13T08:40:03.781Z
sensor,30,2025-10-13T08:40:33.598Z
sensor,31,2025-10-13T08:41:31.143Z
sensor,32,2025-10-13T08:42:00.962Z
sensor,33,2025-10-13T08:42:30.782Z
sensor,32,2025-10-13T08:45:53.239Z
sensor,31,2025-10-13T08:46:51.490Z
sensor,30,2025-10-13T08:49:46.219Z
sensor,29,2025-10-13T08:50:44.466Z
sensor,30,2025-10-13T08:52:11.834Z
sensor,31,2025-10-13T08:52:41.654Z
sensor,32,2025-10-13T08:53:11.473Z
sensor,33,2025-10-13T08:53:41.293Z
sensor,34,2025-10-13T08:54:37.448Z
sensor,33,2025-10-13T08:56:04.814Z
sensor,32,2025-10-13T08:57:03.059Z
sensor,33,2025-10-13T08:57:32.877Z
sensor,34,2025-10-13T08:58:30.424Z
sensor,33,2025-10-13T08:59:00.244Z
sensor,36,2025-10-13T08:59:57.792Z
sensor,38,2025-10-13T09:00:27.610Z
sensor,40,2025-10-13T09:00:57.431Z
sensor,41,2025-10-13T09:01:27.249Z
sensor,40,2025-10-13T09:02:52.527Z
sensor,39,2025-10-13T09:03:22.345Z
sensor,38,2025-10-13T09:03:52.166Z
sensor,37,2025-10-13T09:04:49.010Z
sensor,38,2025-10-13T09:05:18.832Z
sensor,37,2025-10-13T09:05:48.649Z
sensor,35,2025-10-13T09:06:18.468Z
sensor,36,2025-10-13T09:06:48.287Z
sensor,37,2025-10-13T09:07:06.356Z
sensor,38,2025-10-13T09:07:36.176Z
sensor,40,2025-10-13T09:07:57.695Z
sensor,42,2025-10-13T09:08:27.504Z
sensor,46,2025-10-13T09:08:57.323Z
sensor,44,2025-10-13T09:09:07.928Z
sensor,41,2025-10-13T09:09:37.728Z
sensor,38,2025-10-13T09:10:07.549Z
sensor,37,2025-10-13T09:10:37.367Z
sensor,36,2025-10-13T09:11:15.063Z
sensor,37,2025-10-13T09:11:44.882Z
sensor,38,2025-10-13T09:12:14.701Z
sensor,40,2025-10-13T09:13:24.418Z
sensor,41,2025-10-13T09:13:54.237Z
sensor,42,2025-10-13T09:14:24.055Z
sensor,43,2025-10-13T09:14:53.882Z
sensor,46,2025-10-13T09:16:19.148Z
sensor,47,2025-10-13T09:16:48.966Z
sensor,45,2025-10-13T09:17:18.785Z
sensor,46,2025-10-13T09:17:48.605Z
sensor,44,2025-10-13T09:18:18.425Z
sensor,43,2025-10-13T09:18:48.243Z
sensor,44,2025-10-13T09:19:43.002Z
sensor,46,2025-10-13T09:20:12.820Z
sensor,47,2025-10-13T09:20:42.639Z
sensor,48,2025-10-13T09:21:39.490Z
sensor,46,2025-10-13T09:22:37.735Z
sensor,44,2025-10-13T09:23:07.553Z
sensor,43,2025-10-13T09:23:37.373Z
sensor,42,2025-10-13T09:24:07.191Z
sensor,44,2025-10-13T09:25:03.343Z
sensor,45,2025-10-13T09:25:33.161Z
sensor,666,2025-10-13T09:26:59.832Z
sensor,42,2025-10-13T09:27:29.651Z
sensor,40,2025-10-13T09:27:59.471Z
sensor,39,2025-10-13T09:28:29.288Z
sensor,41,2025-10-13T09:28:59.108Z
sensor,42,2025-10-13T09:29:54.565Z
sensor,43,2025-10-13T09:30:24.383Z
sensor,45,2025-10-13T09:30:54.204Z
sensor,44,2025-10-13T09:31:24.019Z
sensor,43,2025-10-13T09:32:20.178Z
sensor,44,2025-10-13T09:33:18.419Z
sensor,45,2025-10-13T09:33:48.239Z
sensor,47,2025-10-13T09:35:14.905Z
sensor,49,2025-10-13T09:36:13.147Z
sensor,50,2025-10-13T09:36:42.968Z
sensor,51,2025-10-13T09:37:12.784Z
sensor,49,2025-10-13T09:37:42.602Z
sensor,47,2025-10-13T09:38:12.422Z
sensor,45,2025-10-13T09:38:42.239Z
sensor,44,2025-10-13T09:39:12.057Z
sensor,45,2025-10-13T09:40:06.115Z
sensor,46,2025-10-13T09:40:35.934Z
sensor,48,2025-10-13T09:41:05.752Z
sensor,54,2025-10-13T09:41:35.568Z
sensor,59,2025-10-13T09:42:05.387Z
sensor,57,2025-10-13T09:42:35.207Z
sensor,56,2025-10-13T09:43:05.024Z
sensor,55,2025-10-13T09:43:34.850Z
sensor,53,2025-10-13T09:44:04.661Z
sensor,51,2025-10-13T09:44:34.481Z
sensor,50,2025-10-13T09:45:04.298Z
sensor,51,2025-10-13T09:45:34.116Z
sensor,54,2025-10-13T09:46:03.934Z
sensor,56,2025-10-13T09:46:33.752Z
sensor,57,2025-10-13T09:47:22.944Z
sensor,58,2025-10-13T09:48:21.184Z
sensor,56,2025-10-13T09:49:19.426Z
sensor,53,2025-10-13T09:49:49.245Z
sensor,55,2025-10-13T09:50:19.064Z
sensor,58,2025-10-13T09:50:48.884Z
sensor,59,2025-10-13T09:51:18.700Z
sensor,60,2025-10-13T09:51:48.518Z
sensor,58,2025-10-13T09:52:18.339Z
sensor,59,2025-10-13T09:52:48.157Z
sensor,69,2025-10-13T09:53:17.974Z
sensor,58,2025-10-13T09:53:47.794Z
sensor,52,2025-10-13T09:54:17.612Z
sensor,50,2025-10-13T09:54:47.430Z
sensor,49,2025-10-13T09:55:38.010Z
sensor,50,2025-10-13T09:56:36.253Z
sensor,51,2025-10-13T09:57:06.071Z
sensor,52,2025-10-13T09:58:32.741Z
sensor,51,2025-10-13T09:59:02.559Z
sensor,47,2025-10-13T09:59:28.770Z
sensor,49,2025-10-13T09:59:58.577Z
sensor,47,2025-10-13T10:00:28.393Z
sensor,46,2025-10-13T10:00:58.212Z
sensor,45,2025-10-13T10:01:28.030Z
sensor,44,2025-10-13T10:01:57.851Z
sensor,46,2025-10-13T10:03:21.861Z
sensor,47,2025-10-13T10:03:51.681Z
sensor,48,2025-10-13T10:04:21.501Z
sensor,49,2025-10-13T10:04:51.320Z
sensor,50,2025-10-13T10:05:21.139Z
sensor,48,2025-10-13T10:05:33.105Z
sensor,47,2025-10-13T10:06:02.909Z
sensor,44,2025-10-13T10:06:32.729Z
sensor,54,2025-10-13T10:07:02.549Z
sensor,76,2025-10-13T10:07:32.367Z
sensor,74,2025-10-13T10:08:02.187Z
sensor,78,2025-10-13T10:08:32.007Z
sensor,76,2025-10-13T10:09:01.826Z
sensor,62,2025-10-13T10:09:31.648Z
sensor,58,2025-10-13T10:10:24.455Z
sensor,57,2025-10-13T10:10:54.274Z
sensor,61,2025-10-13T10:11:24.094Z
sensor,56,2025-10-13T10:11:53.914Z
sensor,54,2025-10-13T10:12:23.734Z
sensor,52,2025-10-13T10:12:53.556Z
sensor,50,2025-10-13T10:13:23.375Z
sensor,48,2025-10-13T10:13:53.196Z
sensor,47,2025-10-13T10:14:23.017Z
sensor,48,2025-10-13T10:15:15.687Z
sensor,49,2025-10-13T10:16:13.930Z
sensor,47,2025-10-13T10:16:18.950Z
sensor,53,2025-10-13T10:16:48.758Z
sensor,55,2025-10-13T10:17:12.248Z
sensor,65,2025-10-13T10:17:42.057Z
sensor,69,2025-10-13T10:18:11.881Z
sensor,51,2025-10-13T10:18:41.699Z
sensor,48,2025-10-13T10:18:57.054Z
sensor,46,2025-10-13T10:19:26.842Z
sensor,45,2025-10-13T10:19:56.662Z
sensor,44,2025-10-13T10:20:26.478Z
sensor,45,2025-10-13T10:22:27.137Z
sensor,46,2025-10-13T10:22:32.471Z
sensor,50,2025-10-13T10:23:02.273Z
sensor,53,2025-10-13T10:23:32.091Z
sensor,56,2025-10-13T10:24:01.909Z
sensor,59,2025-10-13T10:24:31.731Z
sensor,66,2025-10-13T10:25:01.557Z
sensor,65,2025-10-13T10:25:31.368Z
sensor,64,2025-10-13T10:25:35.463Z
sensor,60,2025-10-13T10:26:05.265Z
sensor,59,2025-10-13T10:26:35.081Z
sensor,58,2025-10-13T10:27:32.062Z
sensor,56,2025-10-13T10:28:01.884Z
sensor,55,2025-10-13T10:28:31.702Z
sensor,676,2025-10-13T10:29:01.521Z
sensor,52,2025-10-13T10:29:31.339Z
sensor,51,2025-10-13T10:30:01.160Z
sensor,50,2025-10-13T10:30:55.921Z
sensor,51,2025-10-13T10:31:54.165Z
sensor,52,2025-10-13T10:32:23.985Z
sensor,53,2025-10-13T10:32:53.804Z
sensor,55,2025-10-13T10:33:23.623Z
sensor,54,2025-10-13T10:34:48.900Z
sensor,53,2025-10-13T10:35:47.142Z
sensor,52,2025-10-13T10:36:16.964Z
sensor,51,2025-10-13T10:36:46.782Z
sensor,52,2025-10-13T10:37:16.600Z
sensor,53,2025-10-13T10:37:46.421Z
sensor,54,2025-10-13T10:38:16.238Z
sensor,55,2025-10-13T10:38:46.059Z
sensor,56,2025-10-13T10:39:15.876Z
sensor,57,2025-10-13T10:40:09.244Z
sensor,58,2025-10-13T10:40:39.064Z
sensor,56,2025-10-13T10:41:08.885Z
sensor,54,2025-10-13T10:41:38.703Z
sensor,53,2025-10-13T10:43:03.981Z
sensor,52,2025-10-13T10:43:33.803Z
sensor,53,2025-10-13T10:44:31.349Z
sensor,55,2025-10-13T10:45:01.168Z
sensor,57,2025-10-13T10:45:30.988Z
sensor,56,2025-10-13T10:46:27.838Z
sensor,54,2025-10-13T10:47:26.078Z
sensor,52,2025-10-13T10:47:55.900Z
sensor,51,2025-10-13T10:48:25.718Z
sensor,49,2025-10-13T10:49:22.570Z
sensor,48,2025-10-13T10:50:20.821Z
sensor,49,2025-10-13T10:51:19.063Z
sensor,48,2025-10-13T10:51:48.883Z
sensor,49,2025-10-13T10:55:12.048Z
sensor,48,2025-10-13T10:56:10.294Z
sensor,47,2025-10-13T10:56:40.115Z
sensor,46,2025-10-13T10:57:37.658Z
sensor,45,2025-10-13T10:58:35.907Z
sensor,44,2025-10-13T10:59:05.728Z
sensor,43,2025-10-13T11:01:01.524Z
sensor,42,2025-10-13T11:01:31.342Z
sensor,41,2025-10-13T11:02:01.163Z
sensor,40,2025-10-13T11:02:58.012Z
sensor,39,2025-10-13T11:03:27.834Z
sensor,38,2025-10-13T11:04:25.385Z
sensor,37,2025-10-13T11:04:55.206Z
sensor,36,2025-10-13T11:06:21.875Z
sensor,37,2025-10-13T11:09:16.613Z
sensor,38,2025-10-13T11:10:14.855Z
sensor,39,2025-10-13T11:11:42.221Z
sensor,41,2025-10-13T11:12:12.043Z
sensor,42,2025-10-13T11:12:41.862Z
sensor,45,2025-10-13T11:13:11.681Z
sensor,47,2025-10-13T11:13:41.501Z
sensor,49,2025-10-13T11:14:11.325Z
sensor,50,2025-10-13T11:14:41.143Z
sensor,51,2025-10-13T11:15:10.962Z
sensor,52,2025-10-13T11:16:04.325Z
sensor,50,2025-10-13T11:17:02.570Z
sensor,49,2025-10-13T11:17:32.390Z
sensor,48,2025-10-13T11:18:02.207Z
sensor,47,2025-10-13T11:18:32.028Z
sensor,45,2025-10-13T11:19:01.845Z
sensor,44,2025-10-13T11:19:31.664Z
sensor,43,2025-10-13T11:20:01.485Z
sensor,42,2025-10-13T11:20:31.302Z
sensor,41,2025-10-13T11:21:01.126Z
sensor,40,2025-10-13T11:21:30.944Z
sensor,662,2025-10-13T11:22:22.912Z
sensor,39,2025-10-13T11:22:52.732Z
sensor,40,2025-10-13T11:23:22.553Z
sensor,41,2025-10-13T11:24:19.408Z
sensor,40,2025-10-13T11:25:17.652Z
sensor,39,2025-10-13T11:25:47.478Z
sensor,38,2025-10-13T11:26:17.293Z
sensor,37,2025-10-13T11:26:47.114Z
sensor,36,2025-10-13T11:27:16.930Z
sensor,35,2025-10-13T11:27:46.754Z
sensor,34,2025-10-13T11:28:41.511Z
sensor,33,2025-10-13T11:29:39.759Z
sensor,32,2025-10-13T11:30:09.578Z
sensor,31,2025-10-13T11:30:39.399Z
sensor,30,2025-10-13T11:31:09.217Z
sensor,29,2025-10-13T11:32:34.495Z
sensor,30,2025-10-13T11:35:00.108Z
sensor,31,2025-10-13T11:35:29.928Z
sensor,32,2025-10-13T11:35:59.750Z
sensor,33,2025-10-13T11:36:29.571Z
sensor,34,2025-10-13T11:36:59.391Z
sensor,35,2025-10-13T11:37:29.210Z
sensor,36,2025-10-13T11:37:59.029Z
sensor,37,2025-10-13T11:38:53.095Z
sensor,38,2025-10-13T11:39:51.338Z
sensor,39,2025-10-13T11:40:21.159Z
sensor,38,2025-10-13T11:40:50.978Z
sensor,37,2025-10-13T11:41:47.829Z
sensor,35,2025-10-13T11:42:17.654Z
sensor,34,2025-10-13T11:42:47.469Z
sensor,33,2025-10-13T11:43:44.321Z
sensor,32,2025-10-13T11:44:14.145Z
sensor,31,2025-10-13T11:45:11.693Z
sensor,30,2025-10-13T11:45:41.512Z
sensor,29,2025-10-13T11:46:11.331Z
sensor,28,2025-10-13T11:46:41.151Z
sensor,27,2025-10-13T11:47:10.975Z
sensor,26,2025-10-13T11:48:06.426Z
sensor,25,2025-10-13T11:49:04.671Z
sensor,26,2025-10-13T11:52:28.534Z
sensor,27,2025-10-13T11:53:26.779Z
sensor,28,2025-10-13T11:54:54.146Z
sensor,29,2025-10-13T11:55:23.971Z
sensor,31,2025-10-13T11:55:53.788Z
sensor,32,2025-10-13T11:56:23.605Z
sensor,33,2025-10-13T11:57:19.760Z
sensor,32,2025-10-13T11:57:49.579Z
sensor,31,2025-10-13T11:58:47.127Z
sensor,30,2025-10-13T11:59:45.374Z
sensor,31,2025-10-13T12:00:15.192Z
sensor,32,2025-10-13T12:04:07.475Z
sensor,33,2025-10-13T12:04:37.293Z
sensor,34,2025-10-13T12:05:34.844Z
sensor,36,2025-10-13T12:06:33.089Z
sensor,37,2025-10-13T12:07:31.332Z
sensor,38,2025-10-13T12:08:29.580Z
sensor,39,2025-10-13T12:08:59.401Z
sensor,41,2025-10-13T12:09:29.219Z
sensor,42,2025-10-13T12:09:59.039Z
sensor,43,2025-10-13T12:10:28.858Z
sensor,44,2025-10-13T12:10:58.678Z
sensor,43,2025-10-13T12:13:20.806Z
sensor,42,2025-10-13T12:18:12.034Z
sensor,41,2025-10-13T12:18:28.151Z
sensor,44,2025-10-13T12:18:57.952Z
sensor,43,2025-10-13T12:19:27.771Z
sensor,42,2025-10-13T12:19:52.291Z
sensor,40,2025-10-13T12:20:22.094Z
sensor,39,2025-10-13T12:20:51.915Z
sensor,38,2025-10-13T12:21:21.731Z
sensor,37,2025-10-13T12:21:53.987Z
sensor,36,2025-10-13T12:22:23.809Z
sensor,35,2025-10-13T12:22:58.710Z
sensor,33,2025-10-13T12:23:28.532Z
sensor,32,2025-10-13T12:23:58.351Z
sensor,33,2025-10-13T12:24:30.613Z
sensor,31,2025-10-13T12:25:00.432Z
sensor,30,2025-10-13T12:26:18.354Z
sensor,29,2025-10-13T12:27:16.601Z
sensor,28,2025-10-13T12:27:46.419Z
sensor,27,2025-10-13T12:29:14.866Z
sensor,25,2025-10-13T12:29:19.266Z
sensor,27,2025-10-13T12:29:49.071Z
sensor,26,2025-10-13T12:30:46.747Z
sensor,27,2025-10-13T12:31:45.064Z
sensor,22,2025-10-13T13:03:23.327Z
sensor,21,2025-10-13T13:05:55.374Z
sensor,22,2025-10-13T13:07:51.864Z
sensor,21,2025-10-13T13:08:50.110Z
sensor,22,2025-10-13T13:12:43.095Z
sensor,21,2025-10-13T13:13:43.516Z
sensor,22,2025-10-13T13:14:43.137Z
sensor,21,2025-10-13T13:15:12.956Z
sensor,22,2025-10-13T13:15:42.777Z
sensor,21,2025-10-13T13:17:36.619Z
sensor,643,2025-10-13T13:20:02.231Z
sensor,21,2025-10-13T13:20:32.048Z
sensor,22,2025-10-13T13:26:19.892Z
sensor,23,2025-10-13T13:28:16.382Z
sensor,644,2025-10-13T13:28:46.202Z
sensor,23,2025-10-13T13:29:16.028Z
sensor,24,2025-10-13T13:30:12.891Z
sensor,23,2025-10-13T13:31:11.150Z
sensor,22,2025-10-13T13:33:07.641Z
sensor,21,2025-10-13T13:34:35.013Z
sensor,20,2025-10-13T13:36:44.184Z
sensor,22,2025-10-13T13:37:13.993Z
sensor,21,2025-10-13T13:38:06.205Z
sensor,20,2025-10-13T13:38:36.025Z
sensor,21,2025-10-13T13:39:05.848Z
sensor,20,2025-10-13T13:40:59.388Z
sensor,19,2025-10-13T13:43:25.006Z
sensor,20,2025-10-13T13:46:48.874Z
sensor,641,2025-10-13T13:49:14.491Z
sensor,19,2025-10-13T13:49:44.313Z
sensor,9,2025-10-13T15:17:54.166Z
sensor,10,2025-10-13T15:18:37.955Z
sensor,9,2025-10-13T15:19:07.777Z
sensor,10,2025-10-13T15:19:44.845Z
sensor,9,2025-10-13T15:20:14.665Z
sensor,8,2025-10-13T15:20:53.137Z
sensor,9,2025-10-13T15:21:56.186Z
sensor,8,2025-10-13T15:22:54.548Z
sensor,9,2025-10-13T15:23:24.370Z
sensor,10,2025-10-13T15:25:05.739Z
sensor,9,2025-10-13T15:26:05.380Z
sensor,8,2025-10-13T15:26:43.622Z
sensor,9,2025-10-13T15:27:13.431Z
sensor,8,2025-10-13T15:28:59.489Z
sensor,7,2025-10-13T15:40:07.790Z
sensor,6,2025-10-13T15:43:02.520Z
sensor,7,2025-10-13T15:45:35.651Z
sensor,6,2025-10-13T15:47:03.017Z
sensor,0,2025-10-13T15:47:53.831Z
sensor,6,2025-10-13T15:48:23.651Z
sensor,5,2025-10-13T15:48:53.469Z
sensor,6,2025-10-13T15:49:23.288Z
sensor,627,2025-10-13T15:50:36.445Z
sensor,6,2025-10-13T15:51:06.261Z
sensor,10,2025-10-13T15:52:05.897Z
sensor,9,2025-10-13T15:52:39.162Z
sensor,10,2025-10-13T15:53:08.968Z
sensor,11,2025-10-13T15:53:38.787Z
sensor,10,2025-10-13T15:54:05.506Z
sensor,9,2025-10-13T15:55:50.573Z
sensor,10,2025-10-13T15:56:20.390Z
sensor,11,2025-10-13T15:59:01.821Z
sensor,10,2025-10-13T15:59:35.489Z
sensor,9,2025-10-13T16:10:19.146Z
sensor,11,2025-10-13T16:10:48.955Z
sensor,12,2025-10-13T16:13:36.241Z
sensor,11,2025-10-13T16:14:06.045Z
sensor,10,2025-10-13T16:17:00.216Z
sensor,9,2025-10-13T16:18:27.586Z
sensor,8,2025-10-13T16:20:24.075Z
sensor,7,2025-10-13T16:23:18.819Z
sensor,8,2025-10-13T16:24:17.063Z
sensor,7,2025-10-13T16:25:15.309Z
sensor,6,2025-10-13T16:30:34.900Z
sensor,7,2025-10-13T16:31:33.147Z
sensor,6,2025-10-13T16:33:00.519Z
sensor,5,2025-10-13T16:34:27.890Z
sensor,4,2025-10-13T16:38:49.999Z
sensor,3,2025-10-13T16:46:06.853Z
sensor,624,2025-10-13T16:49:01.599Z
sensor,3,2025-10-13T16:49:31.420Z
sensor,2,2025-10-13T16:54:21.963Z
sensor,4,2025-10-13T17:01:21.942Z
sensor,2,2025-10-13T17:01:51.760Z
sensor,0,2025-10-13T17:04:12.754Z
sensor,622,2025-10-13T17:04:51.350Z
sensor,0,2025-10-13T17:05:21.156Z
sensor,621,2025-10-13T17:05:50.975Z
sensor,0,2025-10-13T17:06:20.793Z
sensor,621,2025-10-13T17:34:38.500Z
sensor,0,2025-10-13T17:35:08.319Z
sensor,622,2025-10-13T17:46:17.468Z
sensor,0,2025-10-13T17:46:47.290Z
sensor,622,2025-10-13T18:24:13.139Z
sensor,0,2025-10-13T18:24:42.956Z
sensor,621,2025-10-13T18:30:02.620Z
sensor,0,2025-10-13T18:30:32.440Z
sensor,2,2025-10-13T18:49:37.927Z
sensor,0,2025-10-13T18:50:07.747Z
sensor,620,2025-10-13T19:17:45.923Z
sensor,0,2025-10-13T19:18:15.736Z
sensor,621,2025-10-13T20:11:13.714Z
sensor,0,2025-10-13T20:11:43.532Z
sensor,620,2025-10-13T20:23:32.812Z
sensor,0,2025-10-13T20:24:02.639Z
sensor,621,2025-10-13T20:38:48.767Z
sensor,0,2025-10-13T20:39:18.591Z
sensor,621,2025-10-13T21:22:59.510Z
sensor,0,2025-10-13T21:23:29.329Z
sensor,2,2025-10-13T21:50:21.229Z
sensor,0,2025-10-13T21:50:51.048Z
sensor,620,2025-10-13T22:29:40.303Z
sensor,0,2025-10-13T22:30:10.124Z
sensor,626,2025-10-13T23:28:32.708Z
sensor,0,2025-10-13T23:29:02.518Z
sensor,620,2025-10-14T00:50:52.802Z
sensor,0,2025-10-14T00:51:22.609Z
sensor,621,2025-10-14T01:38:26.821Z
sensor,0,2025-10-14T01:38:56.641Z
sensor,620,2025-10-14T02:42:01.944Z
sensor,0,2025-10-14T02:42:31.764Z
sensor,619,2025-10-14T04:08:37.687Z
sensor,0,2025-10-14T04:09:07.513Z
sensor,619,2025-10-14T05:31:08.642Z
sensor,0,2025-10-14T05:31:38.464Z
sensor,619,2025-10-14T06:13:22.396Z
sensor,0,2025-10-14T06:13:52.218Z
sensor,2,2025-10-14T06:55:36.118Z
sensor,622,2025-10-14T07:05:18.583Z
sensor,2,2025-10-14T07:05:48.405Z
sensor,3,2025-10-14T07:09:11.574Z
sensor,4,2025-10-14T07:16:28.428Z
sensor,5,2025-10-14T07:22:47.029Z
sensor,4,2025-10-14T07:24:43.522Z
sensor,5,2025-10-14T07:28:07.391Z
sensor,4,2025-10-14T07:28:37.208Z
sensor,5,2025-10-14T07:29:07.028Z
sensor,4,2025-10-14T07:30:03.882Z
sensor,5,2025-10-14T07:30:33.700Z
sensor,6,2025-10-14T07:42:11.971Z
sensor,5,2025-10-14T07:42:41.782Z
sensor,6,2025-10-14T07:43:39.327Z
sensor,7,2025-10-14T07:51:54.423Z
sensor,6,2025-10-14T07:52:24.245Z
sensor,7,2025-10-14T07:52:54.061Z
sensor,8,2025-10-14T07:55:47.410Z
sensor,7,2025-10-14T07:56:17.228Z
sensor,8,2025-10-14T07:56:47.047Z
sensor,7,2025-10-14T07:57:16.870Z
sensor,8,2025-10-14T07:57:46.689Z
sensor,7,2025-10-14T07:58:16.510Z
sensor,8,2025-10-14T07:58:46.329Z
sensor,7,2025-10-14T07:59:40.394Z
sensor,8,2025-10-14T08:01:07.766Z
sensor,9,2025-10-14T08:03:33.384Z
sensor,8,2025-10-14T08:04:31.630Z
sensor,9,2025-10-14T08:05:29.874Z
sensor,10,2025-10-14T08:10:21.108Z
sensor,13,2025-10-14T08:22:14.211Z
sensor,12,2025-10-14T08:22:44.036Z
sensor,13,2025-10-14T08:23:13.853Z
sensor,14,2025-10-14T08:26:46.403Z
sensor,unavailable,2025-10-14T08:32:01.451Z
sensor,14,2025-10-14T08:32:05.209Z
sensor,15,2025-10-14T08:33:05.005Z
sensor,16,2025-10-14T08:36:57.998Z
sensor,17,2025-10-14T08:42:47.473Z
sensor,18,2025-10-14T08:46:11.330Z
sensor,19,2025-10-14T08:47:38.704Z
sensor,20,2025-10-14T08:50:04.323Z
sensor,21,2025-10-14T08:52:29.939Z
sensor,20,2025-10-14T08:53:28.185Z
sensor,21,2025-10-14T08:54:26.433Z
sensor,22,2025-10-14T08:56:52.048Z
sensor,23,2025-10-14T09:01:14.160Z
sensor,22,2025-10-14T09:02:12.409Z
sensor,642,2025-10-14T09:03:10.656Z
sensor,23,2025-10-14T09:03:40.474Z
sensor,24,2025-10-14T09:10:27.507Z
sensor,25,2025-10-14T09:13:51.373Z
sensor,26,2025-10-14T09:18:13.487Z
sensor,27,2025-10-14T09:19:11.735Z
sensor,28,2025-10-14T09:20:39.102Z
sensor,29,2025-10-14T09:21:37.348Z
sensor,30,2025-10-14T09:22:35.599Z
sensor,31,2025-10-14T09:23:33.845Z
sensor,32,2025-10-14T09:24:32.087Z
sensor,33,2025-10-14T09:25:01.911Z
sensor,34,2025-10-14T09:25:31.729Z
sensor,35,2025-10-14T09:26:28.578Z
sensor,36,2025-10-14T09:27:55.953Z
sensor,37,2025-10-14T09:30:21.568Z
sensor,38,2025-10-14T09:31:48.978Z
sensor,39,2025-10-14T09:32:47.184Z
sensor,37,2025-10-14T09:33:45.437Z
sensor,38,2025-10-14T09:34:23.105Z
sensor,40,2025-10-14T09:34:52.927Z
sensor,39,2025-10-14T09:34:55.691Z
sensor,38,2025-10-14T09:35:25.481Z
sensor,39,2025-10-14T09:36:23.158Z
sensor,37,2025-10-14T09:36:58.060Z
sensor,49,2025-10-14T09:37:25.344Z
sensor,61,2025-10-14T09:37:55.166Z
sensor,62,2025-10-14T09:38:24.986Z
sensor,63,2025-10-14T09:39:21.968Z
sensor,62,2025-10-14T09:39:51.791Z
sensor,61,2025-10-14T09:40:21.609Z
sensor,60,2025-10-14T09:41:47.586Z
sensor,58,2025-10-14T09:42:45.829Z
sensor,59,2025-10-14T09:43:15.652Z
sensor,60,2025-10-14T09:44:13.202Z
sensor,62,2025-10-14T09:48:06.186Z
sensor,63,2025-10-14T09:51:59.176Z
sensor,64,2025-10-14T09:52:29.005Z
sensor,65,2025-10-14T09:53:26.546Z
sensor,64,2025-10-14T09:54:53.917Z
sensor,65,2025-10-14T09:57:19.529Z
sensor,66,2025-10-14T09:58:17.777Z
sensor,67,2025-10-14T09:59:45.151Z
sensor,64,2025-10-14T10:00:48.032Z
sensor,67,2025-10-14T10:01:17.832Z
sensor,68,2025-10-14T10:02:15.511Z
sensor,69,2025-10-14T10:03:13.754Z
sensor,66,2025-10-14T10:05:14.651Z
sensor,69,2025-10-14T10:06:14.269Z
sensor,71,2025-10-14T10:08:09.565Z
sensor,70,2025-10-14T10:08:39.324Z
sensor,69,2025-10-14T10:09:09.142Z
sensor,68,2025-10-14T10:10:05.997Z
sensor,67,2025-10-14T10:12:02.492Z
sensor,65,2025-10-14T10:13:42.229Z
sensor,67,2025-10-14T10:14:12.026Z
sensor,68,2025-10-14T10:15:09.712Z
sensor,69,2025-10-14T10:16:07.953Z
sensor,70,2025-10-14T10:16:37.776Z
sensor,69,2025-10-14T10:20:30.068Z
sensor,70,2025-10-14T10:20:59.886Z
sensor,71,2025-10-14T10:21:57.440Z
sensor,70,2025-10-14T10:22:27.261Z
sensor,unavailable,2025-10-14T10:22:39.597Z
sensor,70,2025-10-14T10:22:43.224Z
sensor,69,2025-10-14T10:23:53.933Z
sensor,68,2025-10-14T10:24:23.757Z
sensor,69,2025-10-14T10:26:48.681Z
sensor,68,2025-10-14T10:27:18.502Z
sensor,69,2025-10-14T10:28:16.053Z
sensor,70,2025-10-14T10:29:14.300Z

Try using rechargeable batteries, that is what they are designed for.

if you search for vallhorn here or elsewhere, you will come across many discussion of the reliability of this device (or lack of) when not using the ikea rechargeable batteries. The ikea batteries are lower voltage than other batteries, and that apparently affects this device in particular.

Like with all sensors, you should have some (software) filtering for spikes.

My experience is that all NiMH (1.2 V) batteries work reliable.