Wireless WiFi Door Alarm Sensor

Precision-engineered door and window sensor consisting of a compact main body (66 × 28 × 20 mm) and matching magnetic contact (66 × 10 × 20 mm), both crafted from superior ABS plastic for resilience against daily handling and environmental fluctuations. Powered by two AAA 1.5V batteries (not included), it operates at less than 5 µA standby current — enabling up to 46 months of uninterrupted monitoring. Uses 2.4 GHz Wi-Fi (IEEE 802.11b/g/n) with effective transmission distance up to 50 m in open environments and reliable detection sensitivity above 1 cm gap. Rated for reliable indoor operation between 10°C and 40°C and 20–85% relative humidity. Fully managed through the free Smart Life or Tuya app — available on iOS and Android — delivering immediate open/close alerts, remote status verification and configurable notification settings. Compatible with Alexa and Google Assistant for natural-language voice interaction, and supports advanced automation via IFTTT and Smart Life ‘scenes’ (e.g., arming alarm mode when leaving home, or logging entry times automatically). Installation is fast and flexible: mount using the included high-adhesion double-sided tape or optional screws — ideal for rental properties, listed buildings or DIY-friendly setups. Device sharing and full activity history — including timestamps for every state change — are accessible to all authorised users via the app interface.