3Pcs 315MHz XD-FST XD-RF-5V Wireless Transmitter Receiver Module Board Not Super-heterodyne

Transmitter ModuleSpecification Working voltage 3V 12VWorking current 20mA 28mAStandby current 0mAWorking frequency 315MHzTransmitter distance 500m sensitivity can be above 103dBm if in wide field Output power 16dBm 40mW Transmitter rate 10KbpsModulation mode OOK AM Working temperature 10C 70CSize 19 x 19 x 8mmFeature Stable performanceWider range of working voltagePins PIN1 ATAD data inputPIN2 VCC power PIN3 GND power Application Wireless calling system burglar alarm wireless data transmission automated data acquisition systemReceiver Module 5V super regeneration Specification Working voltage DC 5VWorking current 4mAModulation mode OOK AM Working temperature 10C 70CReceiving sensitivity 110dBWorking frequency 315MHzSize 30 x 14 x 7mmFeature Using LC oscillating circuit include amplificationOutput data signal is TTL levelConnect to decoder directlyPins PIN1 ANT antennaPIN2 VCC power PIN3 4 DATA data outputPIN5 GND power Application Wireless remote control switch remote control socket data transmission remote control toys anti theft alarm hostNote The antenna has large impact on reception of the module the best antenna wavelength is 1 4 and generally use 50Ohm single wire the antenna length of 315M one is about 23cm Also the position of the antenna affect the reception of the module keep the antenna stretched and away from the shield high pressure and interference source as far as possible Package included 3 x 315MHz