①. Installation: wireless ②. Frequency: 433.92MHz ③. Code: Rolling code ④. Battery: 12V 27A ⑤. Radio transmission distance: 30-100m (Open area) ⑥. Scope of application: garage door, alarm, automatic door, rolling door, etc. ⑦. Compatible Model: for Alutech AT-4 AN-Motors AT-4 Alutech AnMotors ASG1000 Alutech AnMotors AR-1-500 Alutech AT-4 600 ⑧. Programming transmitters to receiver: The remote control has the same function as your old remote. It should be programmed with the old receiver according to your old manual. ⑨. Color: Black + silver ⑩. Material: ABS ⑪. Package Contents: 2 x Remote Control (Only the above package content, other products are not included.) ⑫. Note: Light and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is +/- 1-3cm.