I’ve had a Zooz ZSE70 outdoor motion sensor in place since September 2025. Recently, it seems as though it’s eating batteries. I’ve replaced them twice in the last month and both times the battery level has gone from 100% to less than 20% in a week.
The device claims to be sleeping and is set to wake up at the default interval of 4 hours. As far as I can see, all the other settings are set to their defaults.
Is it the cold weather that is throwing things off, or is something else happening. Thanks for any advice.
One other thing - I notice that once the battery level gets below 20%, the device stops working as well. Here for example are the illuminance levels for the past few days - it was working on the 2nd of February, but not since then…
I don’t have this device.
Even the default values look excessive to me,like brightness measurement interval 10s(default).
Also the brightness change report interval 50lux sounds stupid, if you have clouds moving over clear sky it can trigger continuously.
I put everything to the default settings yesterday and replaced the batteries. A day later, and the battery level has dropped from 100% to 76%. Something is definitely wrong, but I can’t see what.
NEVER include the sensor powered with 12 V and then switch over to batteries. Your hub will recognize the sensor as a Z-Wave repeater and the batteries will drain quickly. Always include the sensor powered by batteries only if you’re planning to use it as a battery device.
I wondered if a glitch caused the sensor to think it has been powered with 12 V (I’ve always used batteries). So I put in a fresh set of batteries, did a factory reset and reincluded it in the Zwave network.
Now it seems to be behaving normally and not eating batteries…
