When the receiver module
RXB11 is connected to 51 series microcontroller, it is better to make an isolation circuit, which can better contain the electromagnetic interference of microcontroller to the receiving module. RF receiver module generally outputs high level pulse, not DC level, so it cannot be tested with a multimeter. During debugging, an LED can be connected to a 3K resistor to monitor the output state of the module. RF Wireless Module
RXB11 and PT2262/PT2272 and other special codec chip use, the connection is very simple as long as the direct connection can be, the transmission distance is relatively ideal, generally can reach more than 600 meters, if used with MCU or microcomputer, will be affected by MCU or microcomputer clock interference, The transmission distance decreased significantly, the general practical distance within 200 meters.
