Installation: wireless Frequency : 433.92MHz Code:Rolling code Battery:12V 27A Radio transmission distance: 30-100m (Open area) Scope of application: garage door, alarm, automatic door, rolling door, etc. Compatible Model: for Alutech AT-4 AN-Motors AT-4 Alutech AnMotors ASG1000 Alutech AnMotors AR-1-500 Alutech AT-4 600 Programming transmitters to receiver The 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 + silver Material:ABS Package Contents: 2 x Remote Control Only 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 +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store