Cebek TL-301 is a two channel key fob style transmitter with latching switch action for Group 3 Cebek RF remote control receivers. It uses a carrier frequency of 433.92MHz. This transmitter uses an exclusive single identification code. The synchronisation is done by programming the receiver to allow it to recognize identification codes for a maximum of 5 transmitters. As the receiver's memory is FIFO, once you have synchronised 5 transmitters, the next transmitter programmed will be placed on the memory used by the first one, an the following one will substitute the memory initially destined to the second and so on.