Sensitive (-115dbM) dual conversion SAW RESONATOR LOCKED superhetrodyne 433MHz UHF receiver module with microprocessor code hopping decoding. Four outputs (D0-D3) go high when the corresponding transmitter button (TA-TD) or a combination of buttons is/are pressed (as a result it can be used to transmit parallel data), and the VT output goes high when any of the transmitter buttons are pressed. Can learn over 100 transmitters. The learning push button and an indicator LED are included on the small PCB. PCB dimensions are 38 x 24mm, 5V/13mA operation. Gives over 200M range, even with some obstructions in the path, when used with our TX9.