Specifications:
Operating Voltage: DC 2V- 9V
Current: 9mA (3V voltage
Working current: 30-80mA (measured input working current: 4.8V87mA, 3.6V-63mA, 2.4V-36mA, 80cm wire is used as the antenna for the test, and four, three and two BPI2100mah NiMH rechargeable batteries are used to test the transmission frequency: 80-115MHz (fully covering the frequency of household FM radio) Transmission power: 150mw (type C), 50-800m (depending on the antenna efficiency)
Receiving method: ordinary household FM radio. The FM radio provided by the mobile phone can also be received, but the network radio with network traffic required by the software APP cannot be used. Transmitting distance: the straight-line transmitting distance can reach more than 800 meters in the open and barrier-free space (6V power supply, 80cm professional antenna, the test results of Desheng PL606 high sensitivity radio, the distance will be shortened if the ordinary antenna is tested in the environment with obstacles such as buildings)
Frequency adjustment: adjustable capacitor
Output Impedance: 50 ohms
Size:2 cm * 1cm/0.78*0.39in

Feature:
1.on-board microphone, external audio input (mono).
2 input microphone and audio sensitivity are adjustable, transmission frequency is continuously adjustable.
3 transmission power: 5V input can reach 150mw transmission power, and the open space is more than 300 meters.
4. All imported components work stably, frequency does not drift, and touch antenna does not drift.
5. Broadband modulation, excellent sound quality, comparable to FM radio.

Package Included:
1* 88-108MHz FM Transmitter Module