Kindly note Our remote is the COMPATIBLE / REPLACEMENT /CLONE remote , not the original one . please make sure your remote / system can be used before buying . Description: 1.Type of programming: Clone 2.Number of channels: 4 3. Code:fixed code 4. Frequency: 433.92MHz 433MHz 5.Woring Range: 10-50 m (open space) 6.Power supply: 12V 27A 7.Remote come with Battery !!! Compatible Model: DOITRAND TS2DE DOITRAND TS4DE DOITRAND MPSTF2E DOITRAND MPSTF4E DOITRAND ER2C4ACD Compatible with All 433.92mhz fixed code remote controls. How to program the remote: Please note, this remote should copy from your original remote, you should have have workable remote control on hand, then you can make the copy, if your original remote is lost, then please don't buy it. The programming procedure is as below: Step:1:Clear the history code from duplicator 1:Press button A and B continuously until LED flash 3 times 2.Release button B (Keep pressing button A),and press button B Slowly for 3 times,LED flash 3.Release button A,finish code clearance. Step 2,Copy code from original remote control 1.Put duplicator aside of original transmitter,as close as possible. 2.Press and hold button A of original transmitter,then press and hold button A of duplicator until you see the duplicators LED flash 3.Release both buttons,finish code copy,copy other button in same way. Button A= lock button Button B=unlock button If you can not copy it well, please be patient and repeat the above steps and try it again. Include 1 x Remote Control 1 x Battery 1 x Keychain 1 x English Manual