1.RF transmitter for copying original remote 2, Used for home alarm system, ... door opener,rolling shutter etc )Key blank : for different brands of car keyBattery Model : 27AVoltage ... remote.Tips: Only suit for fixed code remote 2,RF transmitter Develop all kinds of ... RF remote control with different function. Like chip model EV1527,PT2260, HT6P20B, HCS301 etc. Design for ...