FM Microphone Pickup Wireless Audio Transmitter FM MIC Core Board V4.0

Features Convert the sound around the onboard microphone into an FM radio signal and send it out to achieve pickup and wireless transmission The transmission frequency is adjustable The green component on the core board is an adjustable capacitor Changing the adjustable capacitor can change the transmission frequency The adjustable range covers 88 108MHZ frequency band You can use radio and mobile phones as receivers The sensitivity of the mobile phone s earphone cable as antenna is poor and it is not recommended as a receiver It is widely used in voice pickup and transmission audio MIC sleep monitoring of the elderly and children etc where sound pickup is required Wide voltage working range from 0 7V to 9VVery low power consumption 0 7V working current is only 0 9mA using a single AA dry battery 1 5V power supply the current is only 4 2mA if you use 3000mAH AA Ni MH rechargeable battery it can work continuously 3000 4 2 29 76 day The frequency is adjustable and the adjustment range covers 88 108MHz which is actually much wider than this frequency It can be adjusted by an adjustable capacitor with a non inductive screwdriver Package includes 1 x Transmitter