1.Fence detector can be installed at door, window, passage etc 2.Wireless, suitable for different occasions, and can be compatible with 433MHz 1527 programmer code alarm host. 3.With rain, fog, snow, all-weather outdoor use 4.Tamper proof and shear, mobile, double-beam recognition principle to prevent small animals, birds and other small objects causing false positives 5.Stepless rotate 360 degrees, fast accurate focus, unique terminals, convenient installation and debugging Easy to install, alignment or not have buzzer sound in struction. Scope of application: senior villas, families, companies, financial institutions, clubs, etc Number of : 2 Outdoor detecting distance:100m or 150m Application: Window, door Working voltage: DC12-24V Wireless frequency: 433MHz Programmer code: 1527 Working Temperature: -22C to +55C Trigger Method: Breaking two infrared Wireless distance: 1000m ( In open area) Colour:Photo Color Material:pc Package Contents: 2 x Infrared alarm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.