Smart Door Sensor Dowwin Alarm for Home Security offers advanced protection with its innovative features. This device includes a heartbeat function, ensuring it sends a signal to the host every two hours.

If no signal is received, the sensor will show an offline status on the app, alerting users to any connectivity issues. It also features low battery alerts and notifications for door or window status changes, enhancing overall security.

The sensor is designed with a tamper switch and has a transmitting distance of 30-50 meters. Its compact size (Sensor: 944020 mm; Magnet: 641220 mm) and lightweight (65g) make it easy to install in various locations.

With an operating temperature range of -10°C to +50°C and a radio frequency of 433MHz/868MHz, this device ensures reliable performance across different environments.

Ideal for use in homes, offices, hotels, and other premises, the Smart Door Sensor Dowwin Alarm provides high precision and stability. It helps users receive timely alerts through app notifications, SMS, and phone calls, significantly improving security measures.

The sensor operates on DC 3V using 2 AAA batteries, with a quiescent current of <5uA and alarm current of <20mA.