Rolling Door Shutter Sensor for Alarm System 433MHz The 433MHz Rolling Door Sensor for Tuya Alarm System is a reliable and efficient security solution designed to protect rolling doors and gates. Operating on the stable 433MHz frequency, this sensor detects the opening and closing of rolling doors, instantly sending alerts to your Tuya-compatible alarm system. It seamlessly integrates with other Tuya smart devices, providing real-time monitoring and enhanced security. Ideal for both residential and commercial applications, this sensor offers an easy-to-install and effective way to safeguard rolling doors and entry points. Wireless Frequancy : 433MHz Battery : 23A 12V (Not Included) Wireless Distance : 50~80m (Open Space) Package Size 10x10x5cm G.W. : 0.200kg