A remote control

Operating voltage: DC12V ( 27A/12V a battery)
Operating Current: 10mA _AT_ 12V
radiated power: 10mw _AT_ 12V
modulation: ASK (Amplitude Modulation)
transmitter frequency: 315 (, SAW frequency stabilization)
transmission distance: 50-100M (open, receiving device sensitivity for a negative of100dbm )
encoder types: fixed code
 

Two with decoding receiver board

The operating voltage of DC5V receiver sensitivity is -98db . 7 a pin, are VT , D3 , D2, D1 , D0 , +5 V and GND . VT is a valid signal high output pin Upon receiving a valid signal, the pin output high, may also drive the relay.

Size: 6.6 * 22 * 41mm

Three remote control has four buttons, respectively, corresponding to the four data bits to the receiving board output pin D0 , D1 , D2 , D3 . Press the buttons transmit signals, the corresponding data bit is output high.