In the RF transmitter-receiver module utilizes the RF module (Tx/Rx) for making a wireless remote, which could be used to drive an output from a distant place. RF module, as the name suggests, uses radio frequency to send signals. These signals are transmitted at a particular frequency and a baud rate. A receiver can receive these signals only if it is configured for that frequency.
In generally, the wireless systems designer has two overriding constraints: it must operate over a certain distance and transfer a certain amount of information within a data rate. The RF modules are very small in dimension and have a wide operating voltage range i.e. 3V to 12V.
Basically the RF modules are 433 MHz RF transmitter and receiver modules. The transmitter draws no power when transmitting logic zero while fully suppressing the carrier frequency thus consume significantly low power in battery operation. When logic one is sent carrier is fully on to about 4.5mA with a 3volts power supply. The data is sent serially from the transmitter which is received by the tuned receiver. Transmitter and the receiver are duly interfaced to two microcontrollers for data transfer.
Receiver module specification:
o Operation voltage: DC5V
o Static Current: 4MA
o Receiver frequency: 433.92MHZ; 315 MHz
o External Antenna：32CM signal wire spiral
Transmitter Module Specification:
o Operating voltage :3-12V
o Operating frequency: 433.92MHz; 315Mhz
o Standby current: 0mA
o Operating current :20-28mA
o Transmission distance:> 500m (open to receiving plate sensitivity at-103dBm distance of more than)
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