Micro-ultra-high sensitivity FM radio microphone (can be connected to the car 12v)

 

Dimensions: length 1.8 cm * width 0.65cm

 

Operating voltage: DC 2V --- 12V (recommended battery-powered, power supply will have a steady flow)

 

Working current: 12ma (4.2V voltage test, super power saving)

 

Reference distance: 120 meters open, indoor obstacle environment 10-30 meters (4.2v voltage test, improve the voltage distance greatly improved)

 

Operating frequency: 80MHZ --- 115MHZ (boot the default frequency is generally around 80Mhz)

 

Receiving mode: as long as the 88-108MHz FM radio can receive, with FM function phone can be.

 

Frequency adjustment mode: change the inductance, that is, to change the density of the shock coil, the coil loose when the frequency increases, the coil density when the frequency down.

 

Output impedance: 50 ohms

 

Scope: high sensitivity wireless microphone, wireless recording, wireless monitoring, maternal and child care, patient care and so on. Is strictly prohibited for eavesdropping purposes, it is illegal!

 

The module for the SMD FM transmitter module, the use of better PCB production process, small size, easy to load into the rough barrels, lighters and so on. The frequency of the module is quite stable and can be used to receive any radio, especially with a digital radio, which works better. All components use branded devices.

 

With the SMT technology, the module supply voltage at 3V, the launch distance in the open environment is about 100 meters, the general indoor environment distance of 20 meters, the higher the voltage transmission distance, when the voltage at 9V, the launch distance Up to 300 meters, the antenna can be used for ordinary wire antenna length of 75 cm or so, must be straightened, the test using the best effect of the rod antenna! Of course, the short distance of the antenna can also of course the launch distance will also shorten the launch distance only as a reference to the specific recommendations measured.

 

Package Included:
1 x FM Transmitter Module