Aqara Door and Window Sensor vs Aqara Door and Window Sensor P2

The Aqara Door and Window Sensor P2 is better overall on the strength of its connectivity and integrations: Matter over Thread with no Aqara hub, and support for HomeKit, Google, Alexa, SmartThings, Home Assistant and IFTTT. The original Aqara Door and Window Sensor wins on price and owner rating.

The radio and hub. The Aqara Door and Window Sensor P2 uses Matter over Thread and pairs to a Thread border router with no Aqara hub, while the original Aqara Door and Window Sensor is a Zigbee sensor that requires an Aqara hub.

The original Aqara Door and Window Sensor is the steadier performer on an Aqara hub, with a higher owner rating and class-leading battery life. The P2's Matter/Thread implementation is newer, and some owners report disconnects that need a factory reset and re-pair, though it works well for many.

Buy the original Aqara Door and Window Sensor if you already run an Aqara hub or Zigbee2MQTT and want the cheapest, smallest, longest-lasting option. It is exceptionally discreet with 1 to 2 year battery life, as long as you avoid a mixed ZHA network.

Buy the Aqara Door and Window Sensor P2 if you want no-hub Matter over Thread, the widest platform support, and a wide sensor-magnet gap for trimmed doors. It suits HomeKit or Home Assistant users with a Thread border router who accept some reliability risk.