... design for wireless remote control ,such as house door opener,sliding gate ,security alarm and so ... Product Appearance :Item : remote control case with blank keyBattery Model : 27A Voltage : 12V Material: Zinc Alloy + ABS ... gate opener,car cental system and so on .Encoder model : HCS301,HCS201,HCS200,HCS500,HCS300,HT6P20B,HT6P20A,HT6P20D, ... within 15 days Wireless remote control for house door opener