RF module 433 Mhz Wireless Receiver Module Transmitter Receiver Learning Code 1527 4Ch with antenna For Arduino uno DIY kit         Product description:           [Transmitter module ] Product Model: TX118SA-4 (10 pack)     Transmitting power: 11dbm     Emission current: 10 mA     Rate of fire: maximum 10KB / S     Operating Voltage: DC 3V-24V     Encoding : EV1527 1527 Learning code     Each module has a unique address code, the address code of K1~K4 which are on the same module is the same.     [Receiver module ] Product Model: RX480-E4      Working Voltage : DC3.3~5V     Quiescent Current : ≤5mA     Output current : 10 mA     Working Frequency: 433MHz     Receive Sensitivity: -108dB     Working Temperature : -25~75     Working mode: Momentary Mode , self-locking (Toggle-Mode of the 4 Channels) , interlocking     The output: 4 channel CMOS level signal Corresponding to the remote control ABCD 4 buttons.     Pins Instruction     GND : ground or negative pole     +V : DC3.3~5V input     D0: Data output     D1: Data output     D2: Data output     D3: Data output     VT: Output           How to match the transmitter and receiver           1. Delete existing data: Press learning button(on the receiver) 8 times. Response: LED flashes 7 times.     2. Learning remote code: press learning button(on the receiver) once, twice or three times (see below).     LED turns on: learning mode is active. Press any button of the remote control.     LED indicator flashes three times: learning successfully completed.     3. Test: after the above operation , the receiver board can be controlled by the remote control.     More transmitters with different IDs can be learned and stored additionally, starting with step 2.     A mixture of different modes is possible.