Motorcycle Helmet Headsets (2000meters Commucations)

Motorcycle Helmet Headsets (2000meters Commucations)
 

Product description:

Highlight: Up to 2000 meters is Available!!! (motorcycle tomotorcyle intercom communications)
1. RF output power: 0.5W
2. Frequency point: 410MHz/ 411MHz/ 412MHz/ 413MHz (4 channels)
3. Modulation mode: FM (F3E)
4. Operation temperature: -10 C ~ 60 C
5. Battery : Li-polymer battery 1800mAh
6. Wireless PTT button working frequency: 315MHz
7. Antenna impedance: 50 OHM
8. Intercom unobstructed effective range: 2000m
9. Receiver sensitivity: -122dBm
10. Transmitter Max. frequency deviation: 5 (wide) / 2.5 (narrow) KHz
11. FM Radio frequency range: 87.5~108MHz