Cebek TL-27 is a two channel RF remote control receiver with four relay outputs. It will recognise the signal sent from either TL-20, TL-21 or TL28 transmitters. It verifies the security code you have selected (13,122 combinations) and operates the relays. The TL-26 can be configured in a combination of momentary and latching relay action. It has PCB mounted DIL switches to select the security code. This module will not work with Cebek 1 and 2 channel RF transmitters.