BW-2488M(wireless conference microphone)

wireless conference microphone System Specifications: Frequency Range: VHF200-280MHz Frequency Stability:±0.005% Modulation Mode: FM Modulation Deviation: 50KHz Audio Frequency Response: 100Hz-15KHz Signal to Noise Ratio: >60dB Maximum Sound Pressure Level: >100dB System Distortion:≤0.5% Operating Range: 30m(under typical conditions) Operating Temperature Range:-10 +50oC Transmitter: RF Output Power: 100mW Max Harmonic Suppression: 40dB Antenna: Built-in Power Requirement:1.5V(AA)×3 Nominal Current Drain: Approximately 80mA Battery Life: 4hours Receiver: Receive Mode: Crystal frequency lock Sensitivity: 40dBu(S/N=60dB) Signal to Noise Ratio: >60dB Audio Output Level: 0 400mV Max Power Supply: AC-110V/220V Features: *Advanced companding circuitry , Wide range frequency response, Low distortion *Low noise ,high signal to noise rate. *Stand-to state noise output is close to zero. * Wide range frequency response. Low distortion *Consummate working instruction *Advanced multilevel, narrow band, High frequency and middle frequency wave. Completely eliminate disturbed signal *Low consumed element, long battery life *Special circuit design to eliminate microphone switch impact wave *Work state indicator function *Long operation distance, ideal environment up to more than 30m *Multi-frequency design , make sure transmitter and receiver working at good condition without disturb * Delivering clear, transparent , high fidelity audio, It can be used for middle-scale meeting room, stage, KTV room and family entertainment etc..