FM Transmitter Module Board 0.7-9V 88-108MHz Transmit Module FM Microphone Wireless Pickup FM Transmitting MIC Board V4.0

It makes the sound around the microphone into the FM radio and transmits out to achieve pickup and wireless radio FM transmitter. Wide voltage range: 0.7-9V. Under the condition of 9V and use of 70cm , the distance is 50-100 meters in open space (depends on the actual environment). 88-108MHz frequency, more flexible to use in different situations. Specifications: Color: Green Operating Voltage: 0.7V-9V Frequency Adjustment Range: 88-108MHz Transmit Distance: Under the condition of 9V and use of 70cm , the distance is 50-100 meters in open space (depends on the actual environment) Relationship between Working Voltage (volts), Supply Current (mA) and Transmit Power (dBm): 9V, 24mA, 10.2dBm (that is, 11mW) 8V, 21 mA, 9.5dBm 7V, 19mA, 8.5dBm 6V, 17mA, 7.1dBm 5V, 14mA, 6.1dBm (about 5 mW) 4V, 12mA, 4.5dBm 3V, 9mA, 2.2dBm 2V, 6mA, -1dBm (about 1mW) 1.5V, 4.2mA, -4dBm (about 0.5mW, the general family environment is sufficient, small green radiation!) 1V, 2.4mA, -9dBm 0.7V, 0.9mA, -20dBm (that is 0.01mW) Item Size: Approx. 3.5 * 1.5cm Celsius 1.38 * 0.59in Package Size: Approx. 5 * 3 * 1cm Celsius 1.97 * 1.18 * 0.39in Package Weight: Approx. 3g Celsius 0.11oz