it will work great in all extreme situations

Resistance measurement range 40 MΩ ±(1% + 2)

When the battery fails

6V/60V/600V/1000V

Sonoff ZBM5-1C-86W (1-channel) Zigbee smart touch wall switch Bluetooth højtaler it will work great inSonoff ZBM5 1C 86W (1 channel) Zigbee smart touch wall switch Discover the convenience of smart lighting control with the Sonoff ZBM5 1C 86W, a Zigbee touch sensitive switch that works both in installations with and without a neutral wire. You'll easily integrate it with the eWeLink app and Zigbee gateway to control lights remotely from your smartphone or by voice via Alexa or Google Home. You can set schedules, create smart scenes and automations,