Zigbee devices are not created equal. Take a close look at their APIs before you buy. Devices of the same class may have drastically different capabilities and behavior.
It would be a good idea to take a look at Zigbee2MQTT Supported Devices database before buying a device.
- Working Zigbee2MQTT installation.
- Sonoff SNZB-02 - excellent battery life even when configured for short poll interval.
- SONOFF ZBDongle-E - two options are known, both work, though they might report the
linkqualityparameter differently.
These are simply known to work, with neither positive nor negative comments.
- Sengled E1C-NB7 - metering outlet. Known to work on high power loads.
- Sonoff S31ZB - non-metering outlet.
- 3RSP02028BZ - most detailed reported metrics among metering outlets.
However, THREE of six devices started becoming unresponsive and eventually falling off the network and had to be decommissioned. The rest are fine so far.
Current suspicion is that different Zigbee gateways produce different traffic patterns, and there's something that these switches don't like (devices connected to "ZBDongle-P" work fine whereas devices connected to "ZBDongle-E" fall off).
Also, the ground prong is hollow, extra caution when connecting high power loads is recommended. - ZG-205ZL - human presence detector. Works 100% reliably in some installations, and is extremely oversensitive with massive false positives in others, very likely to misconfigured area of detection, though. Can see people through walls (really).