The Gosund ST18 is an advanced door and window opening sensor that gives you complete control over your home's security. Thanks to the integration with the mobile application, you will receive instant push notifications for any activity related to opening or closing doors and windows, so you can monitor the situation at home in real time.

- Material: ABS
- Dimensions: 71x25x20 mm (sensor), 36x10x17 mm (magnet)
- Weight: 53 g (without batteries)
- LED indicator: red
- Batteries: LR03-1.5V/AAA2 (alkaline batteries)
- Battery life: 6000 activation times
- Standby current: 4uA
- Alarm current: ≤ 0.5 mA
- Zigbee frequency: 2.4 GHz IEEE 802.15.4
- Operating temperature range: 0°C ~ 40°C (32°F ~ 104°F)
- Operating humidity: 20% ~ 85% relative humidity
- Storage temperature range: 0°C ~ 60°C (32°F ~ 140°F)
- Storage humidity: 0% ~ 90% relative humidity
- Certificates: FCC-ID, CE-RED, RoHS