Specifications 1. 4buttons Learning code remote control
2. Automatic door remote control
3. Frequency 315~433MHz
? ?4buttons fashionable ?Remote?control / Transmitter Model# RT903 ? 1.??4Buttons learning code?remote control 2. Automatic door remote control 3. Car alarm system learning code transmitter 4. Frequency 315~433MHz 5. Could?work with learning code device