A FM radio receiver and a tape recorder or FM radio with FM receiver can realize the wireless transmission in a certain range, so at home can walk while sing karaoke, can also assist in the big classroom Teachers teaching, etc. This wireless microphone circuit design is reasonable, the modelling beautiful generous, sound transmission distance of 20 ~ 30 meters, long service life, economical and practical, power consumption small. Very suitable for the general radio enthusiasts assembly to teenagers To use. Operating voltage:1.5 V (1 5 batteries), but this product does not contain the battery. Effective distance:20 meters or so A full set of parts (shell, components, circuit boards, instructions) Two. Assemble the finished product.
July 12, 2017