This sensor is TWICE as good as the rest! The BEST door and window sensor is from Aqara.

I tested 14 Different wireless door and window sensors from Aqara, Ring, YoLink, Linkind, Fibaro, Zooz, Zemismart, Shelly, TESSAN, Centralite, Ecolink, and Singled to find the best. These sensors use Zigbee, Zwave, WiFi, Bluetooth (BLE), and LoRa to monitor your doors, windows, or other open/close applications. Rankings: Aqara: Aqara AliExpress Link: Ring: YoLink Outdoor: Ecolink: Zooz: Fibaro: Linkind: Switchbot: Sengled: Centralite: YoLink Indoor: Shelly: TESSAN: Zemismart: **As an Amazon Affiliate I earn a commission o