|Bus protocol: FSK, DTMF||Frequency response: 200Hz ~ 16KHz|
|Harmonic distortion: ≤0.3%||MIC input sensitivity: 10mV|
|SNR: > 70dB||Built-in speaker impedance and power: 20 Ω, 1 w|
|Signal line level: 16V ~ 36V||Power: 2 w or less|
|Line impedance: 300 Ω||Operating temperature: -10 ~ +60℃|
|Working humidity: 10% ~ 90%||Extension size: 78x120x12mm|
|Hand pager size: 105x35x15mm|
|Length of handheld line: 2m(maximum tension); 1.2m(when suspended)|
- Call/uncall: support call to nurse station host and uncall.
- Power supply mode: bus system power supply.
- Notice: the call distance shall be no more than 0.3m.