Chuango WD-80 315MHz Wireless Vibration Detector

Features: *315MHz frequency, wireless transmission is more than or equal to 80 meters in open place. *When the WD-80 detects vibration, it will send alerts to the alarm system for appropriate action. *There are 3 sensitivity levels that can be adjusted to fit your needs or environment. *It is ideal for safes, drawers, doors, windows and other places where a secure footing can be established. *Super quality material for durable use. Low-consumption design, which can make it work long time.