SONOFF SNZB-04P Zigbee Door Window Sensor Local Smart Scene Linkage Tamper Alert •vDoor and Window Monitoring: Automatically turns lights on when a door is opened and triggers sound and light alarms for unauthorized entry,while sending app notifications to keep you informed at all times •Tamper Alert: Equipped with tamper detection to provide peace of mind. If the sensor is tampered with,you'll receive an alert notification on your phone •5-Year Battery Life: Powered by a CR2477 battery,it offers a long-lasting battery life of over 5 years,reducing the need for frequent replacements •Zigbee 3.0 Compatibility: Seamlessly integrates with Zigbee hubs that use Zigbee 2.0 protocol,such as SONOFF NSPanel Pro,SONOFF iHost,SONOFF ZB Bridge Pro,SONOFF ZBDongle-E,and Echo Plus 2nd •Local Smart Scenes: With local smart scene capabilities,even if your internet connection goes down,as long as your Zigbee devices are powered,scene linkage between devices will still work •Specifications: •Model: SNZB-04P •Wireless connection: Zigbee 3.0 •Installation distance: ≤20mm •Working humidity: 5-95%RH,non-condensing •Casing material: PC •Net weight: 33g •Battery model: CR2477 (3V) •Working temperature: -10℃~60℃ •Product dimension: Transmitter: 50.5x32x21.9mm,Magnet: 27x12x12.4mm Package included: •1 x Door Window Sensor •1 x Magnet •1 x English and Chinese User Manual •Other items not include