This is a good analog transmission circuit module，the frequency can drift.It can be used to some place that the requirement of frequency stability is not very high，or as radio study reference.
Working voltage: 3-5V
Working current: 10-50Ma
Transmission range: 5-30m(subject to the power supply voltage and environment)
Antenna port: Yes
Instruction documengts: No
Frequency: Continuously adjustable(default 5V-99.8MHZ)
Volume Adjustment
MIC miccrophone: Yes
FM modulation mode : FM 76-110MHZ or less(not stereo)
Stability: good
PCB board size: 63mm*41mm*1.6mm
Simple installation: access to DC power supply , turn to MIC or access MP3, use your radio in 99.8MHZ can manually search nearby
LOCB49