SONOFF smart door, window sensor, Wi-Fi

SONOFF Smart Door/Window Sensor, Wi-Fi
The SONOFF smart home system allows you to control electrical appliances remotely using the EWeLink app or by voice with Amazon Alexa or Google Home. It allows you to create various scenarios, group devices to turn on/off multiple devices in your home with one touch, set desired timers and schedules, monitor the status of your home and devices in real time, and share their control. By linking the EWeLink app with the digital automation platform IFTTT, you can further expand the possibilities of scenarios. The Sonoff smart home system devices have the built-in ability to operate in a local LAN network without a cloud server.
Features:
This product is a smart wireless door or window sensor that helps you monitor the status of doors or windows.
The free mobile app eWeLink (Android, IOS) is used for settings.
The device does not require a control panel to operate; the sensor is connected to the app via Bluetooth and controlled via Wi-Fi.
The device detects the open or closed state of doors/windows when the sensor comes into contact with or separates from the magnet. Then the app sends notifications (according to the settings). You can view the sensor status and door opening/closing history at any time. The app also reminds you of the device's low battery.
The dual sensor design allows for more flexible installation and easier adaptation to the required areas. Suitable for various models of windows and doors, both swing and sliding.
Attached with 3M adhesive, the sensor can be glued directly to the desired surface without damaging it.
Made of PC fire-resistant plastic, V0 class.
Suitable for monitoring homes, villas, factories, computer rooms, shops, hotels, office buildings, banks and many other places for possible intrusion.
This device can be combined with various other products to complement smart home scenarios, such as turning on lights or a video camera when the door is opened, etc.
Notes:
Align both parts, the distance between the sensor and the magnet must be less than 5 mm.
The sensor should be installed in a fixed location, such as a door jamb or window frame, while the magnet can be installed in an active location, such as a doorknob.
Batteries (2x AAA) are purchased separately.
Technical data:
Static current: <=40uA.
Detection distance: > 15 mm.
Wi-Fi frequency: 2.4 GHz.
Wi-Fi standard: IEEE802.11b/g/n.
App: eWeLink (Android, iOS).
Operating voltage: DC 3V (2x 1.5V AAA battery - batteries not included).
Operating temperature: -10°C~+40°C.
Operating humidity: 5%-95%RH (non-condensing).
Mounting: on a door or window (with 3M adhesive).
Gap between devices: <5mm.
Dimensions:
Detector: 70x31x19 mm.
Magnet: 42x14x16 mm.
Material: PC.
Safety class: V0 (non-flammable).
Color: white.
Weight: 28g.
Warranty: 24 months