Conference Phone with Two Expanded Microphones, Work with 110 to 240V AC Voltage
Compatible with PSTN analog network
Two expandable microphones
Voltage: 110 to 240V AC
Frequency: 50/60Hz
Power: 15W
Network interface: RJ11 analog PBX or PSTN
Audio bandwidth: 300 to 3,400Hz
Reverberation time: