Teaching, military training, guides, product promotion, auction, meetings, speeches and so on.
- Frequency: 200-270MHz,
- power frequency, more than 100 kinds frequencies points, with temperature compensation shock lock.
- Noise Cancellation: with multiple silent installations to avoid signal interference and noise.
- Voltage: DC9V Host System:
- Frequency response: 100Hz-16KHz
- Input Signal: Cable Cx1 Wireless MIC x1AUX x1
- Power Supply: AC115V/230V (optional) DC 9V/DC 12V, 1.2Ah using sealed lead-acid maintenance -free batteries.
- Effective use of period: radius than 50m, if no shelter up to 100m.