SWM-980 Wireless Listening Device

1. Transceiver frequency: fixed frequency for ISM/UHF.

Using soft-antenna or 2cmfixed antenna.

2. Transmission distance: 2800 meters (max 7km) in widen area, which is according to its using conditions.

3. Power supply: The monitor head uses a high Li-battery which can be used for 16 hours in total. the receiver uses two 7thbatteries of 1.5V which can de used for24 hours in total.

4.  Sensitivity: microphones sensitivity excel 12dB, high-resolution

With in 200square meter (all direction).

5. Transmission distance is closely