1) Main features: high-fidelity pickup, clear voice, no current sound;
2) pointing characteristics: omnidirectional;
3) listening area: effective listening range of more than 50 square meters, with adjustment function;
4) sensitivity: -40 ± 3dB;
5) frequency response: 100Hz ~ 10kHz;
6) signal-to-noise ratio: ≥ 65dB;
7) dynamic range: ≥ 95dB (1KHz at Max dB SPL);
8) Output impedance: ≥ 600 Ohm unbalanced;
9) output signal amplitude: 2Vrms(@1KHz)/ 5.6Vpp(@1KHz);
10) microphone: using high-fidelity condenser microphone;
11) installation structure: card holder separation ceiling mounting, can be quickly maintained disassembly;
12) electromagnetic compatibility: with electrostatic discharge anti-interference and RF electromagnetic field radiation anti-interference; interference function;
13) protection circuit: support lightning protection / power supply polarity reversal protection;
14) Power supply voltage: DC11V-15V;
15) Operating temperature, humidity: 0 ℃ ~ 50 ℃, ≤ 90% RH (no condensation).
1) Main features: high-fidelity pickup, clear voice, no current sound;
2) pointing characteristics: omnidirectional;
3) listening area: effective listening range of more than 50 square meters, with adjustment function;
4) sensitivity: -40 ± 3dB;
5) frequency response: 100Hz ~ 10kHz;
6) signal-to-noise ratio: ≥ 65dB;
7) dynamic range: ≥ 95dB (1KHz at Max dB SPL);
8) Output impedance: ≥ 600 Ohm unbalanced;
9) output signal amplitude: 2Vrms(@1KHz)/ 5.6Vpp(@1KHz);
10) microphone: using high-fidelity condenser microphone;
11) installation structure: card holder separation ceiling mounting, can be quickly maintained disassembly;
12) electromagnetic compatibility: with electrostatic discharge anti-interference and RF electromagnetic field radiation anti-interference; interference function;
13) protection circuit: support lightning protection / power supply polarity reversal protection;
14) Power supply voltage: DC11V-15V;
15) Operating temperature, humidity: 0 ℃ ~ 50 ℃, ≤ 90% RH (no condensation).
