Rolling Code 2-Channel UHF Remote Control Kit

This is state of the art. Up to 15 Tx units can be learnt by one Rx unit. A complete description of what rolling code is is referenced.

For more on using KEELOQ to generate hopping passwords see AN662  and AN665  by Microchip. Do a google.com search on '433.9mhz', 'lipo' for more information about the transmitting band.

Kit Manual