2pcs Garage Gate Remote Control For Alutech At4 Ar1500 Anmotors At4 Asg1000 At4 At 433mhz RollInstallation: wirelessFrequency : 433.92MHzCode:Rolling codeBattery:12V 27ARadio transmission distance: 30100m (Open area)Scope of application: garage door, alarm, automatic door, rolling door, etc.Compatible Model: for Alutech AT4 ANMotors AT4 Alutech AnMotors ASG1000 Alutech AnMotors AR1500 Alutech AT4 600Programming transmitters to receiverThe remote control is the same function as your old remote.it should programming with old receiver according to your old Manual when you .color:Black + silverMaterial:ABSPackage Contents:2 x Remote ControlOnly the above package content, other products are not included.Note: Light 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 + 13cm.