Centralite Micro Door Sensor vs Sonoff SenseGuard DW Gen2

Sonoff SenseGuard DW Gen2. It documents three year AAA battery life, tamper and low-battery alerts, 90 days of history and OTA updates, and it is better received. Centralite Micro Door Sensor wins on price and on its smaller, more discreet body.

Both are Zigbee devices that need a hub, with no Wi-Fi, Bluetooth or Thread fallback. Centralite Micro Door Sensor uses Zigbee HA 1.2 and is documented with SmartThings, Wink, Vera, Qivicon and Home Assistant. Sonoff SenseGuard DW Gen2 lists Alexa, Google Home, SmartThings, Home Assistant and IFTTT.

Sonoff SenseGuard DW Gen2, which includes a tamper alert plus low-battery warnings and a 90 day history log. Tamper alerts, low-battery alerts, history and OTA updates are all undocumented for Centralite Micro Door Sensor, so it reports open and close and little else.

Sonoff SenseGuard DW Gen2 uses two standard AAA cells rated for about three years. The battery type and expected life of Centralite Micro Door Sensor are not documented, which is worth knowing before buying several for a whole house.

Centralite Micro Door Sensor, at 33 x 15 x 44 mm, against 90 x 26 x 13.5 mm for Sonoff SenseGuard DW Gen2, which is longer because it carries two AAA batteries. Neither is weather resistant, so both are indoor-only devices.

Owners of an older Zigbee hub such as SmartThings, Wink, Vera or Qivicon who want cheap, small contacts and do not need tamper alerts or history. For documented battery life, alerting and logging, Sonoff SenseGuard DW Gen2 is the stronger choice.