wireless transmitter MC-RF163: 1.frequency: 315MHZ or 433Mhz 2.code :fixed code, learning code, running code are for your choose 3.Modulation Mode: ASK; 4.Working Voltage: 5V-8V or 9V-12V; 5. Working Current: <5Ma; 6.Transmitting Power: <9mW; 7.Transmission Distance:100Meters