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315MHz RF Transmitter Wireless Module for Arduino - Blue + Golden
About the transmitter module (square shape): - Compatible with Arduino - Arduino Library: Virtual Wire - Working voltage: 3-12VDC - Working current: 3.5mA - Working frequency: 315MHz - Transfer rate: 4.8kbps (max) - Transmission distance: When the spring antennas are soldered to transmitter and receiver module and the power supply is 5V£¬ the open area transmission distance can be increased to 40 meters. The supply voltage is larger£¬ the transmission distance farther. - Antenna: You can use the wire whose length is 17cm or the spring antenna for 315MHz RF.