Zigbee switches offline after a certain period of time (Zigbee2Mqtt, Aqara and Tradfri)

Configuration Zigbee
1

I have a doorbell setup with a Tradfri switch (also tried with Aqara switch), Zigbee2MQTT, automation and scripts triggering notifications. It all works fine when I am testing and finetuning. However, I noticed that after a certain period of time (don’t know exactly but at least 1 hour) the switch device is offline and not publishing to Zigbee2MQTT when pressed. What I noticed from the logs is that in such case the device is announcing itself and after a few seconds when I press the button again, it triggers the automation correctly.

zigbee2mqtt:info  2020-05-01 09:30:42: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tradfri_switch_1"}}'
zigbee2mqtt:info  2020-05-01 09:31:26: MQTT publish: topic 'zigbee2mqtt/tradfri_switch_1', payload '{"linkquality":21,"update_available":true,"battery":74,"click":"on"}'
zigbee2mqtt:info  2020-05-01 09:31:26: MQTT publish: topic 'zigbee2mqtt/tradfri_switch_1', payload '{"linkquality":21,"update_available":true,"battery":74,"click":""}'
zigbee2mqtt:info  2020-05-01 09:31:26: MQTT publish: topic 'homeassistant/device_automation/0x14b457fffe64f74c/click_on/config', payload '{"automation_type":"trigger","type":"click","subtype":"on","payload":"on","topic":"zigbee2mqtt/tradfri_switch_1/click","device":{"identifiers":["zigbee2mqtt_0x14b457fffe64f74c"],"name":"tradfri_switch_1","sw_version":"Zigbee2mqtt 1.13.0","model":"TRADFRI ON/OFF switch (E1743)","manufacturer":"IKEA"}}'
zigbee2mqtt:info  2020-05-01 09:31:26: MQTT publish: topic 'zigbee2mqtt/tradfri_switch_1/click', payload 'on'

Does someone know how I can make sure that the automation is always triggered? The doorbell is useless when going offline after some time.

2

In my limited experience, battery powered devices will drop if range is challenging.
Solution is to install routers or other mains powered devices.

3

At the moment I have the Aqara switch installed as door bell and the range should not be the issue with 1 meter from the zigbee hub and only 1 wall in between. From the logs I see that every 40-50 minutes the device publishes its state and the link quality is between 28-55%.

zigbee2mqtt:info  2020-04-30 23:46:06: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":49,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 00:36:17: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":49,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 01:26:23: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":47,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 02:16:29: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":47,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 03:06:35: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":47,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 03:56:41: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":47,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 04:46:48: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":47,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 05:36:58: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":47,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 06:27:05: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":47,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 07:17:11: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":47,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 08:07:18: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":55,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 08:57:26: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":28,"battery":100,"voltage":3035}'
zigbee2mqtt:info  2020-05-01 09:47:33: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":28,"battery":100,"voltage":3045}'
zigbee2mqtt:info  2020-05-01 10:37:39: MQTT publish: topic 'zigbee2mqtt/aqara_wireless_switch_1', payload '{"linkquality":28,"battery":100,"voltage":3035}'