... 2.Working Voltage: 12V~24V AC/DC 3,With cable connection 4 rolling code Hiland Technology is professional desinger and qualified manufacture ... RECEICER SERIES, R5101,R5102,R5103,R5104,----Rolling code R5105,R5106,R5107,R5108---Fixed code Model No R5101,R5102,R5103,R5104Frequency433.92MHZChannel1-CHANNELPower ... and window for Control board,remote, 1-channel wireless receiver with 433.92Mhz frequency