Door Sensors: Xiaomi MCCGQ14LM (Aqara E1 door and window contact)
Repeater: Sonoff S31ZB Smart Plug
Coordinator: Sonoff Zigbee 3.0 USB Dongle Plus (ZBDongle-P, based on CC2652P). Type: zStack3x0, Revision/Firmware: 20211217
Software in HA: Zigbee2MQTT, version 1.27.2
Whenever I pair my two E1 door/window sensors to the above repeater, the connection is successful and the devices work (the open/close status all works). However, after some amount of time (maybe 20 minutes? maybe an hour?), the E1 sensors start showing as offline - even though their LQI was 60+, and they’re located in the same area as other Zigbee sensors that have never gone offline once.
This leads me to believe there is something wrong with the “heartbeat timing” on these E1 sensors and either the Sonoff smart plug or Sonoff coordinator I use. I’ve already confirmed that my coordinator (CC2652P based) has FW (20211217) later than the version recommended on the Z2M E1 sensor info page (linked above). Assuming a FW update is not the solution, are there any other things you can think I should try?