TECHNICAL PARAMETERS | ||
Power Supply | Telephone Line Powered | |
Voltage | DC48V | |
Standby Work Current | ≤1mA | |
Frequency Response | 250~3000 Hz | |
Ringer Volume | ≤80dB(A) | |
Corrosion Grade | WF1 | |
Ambient Temperature | -40~+70℃ | |
Atmospheric Pressure | 80~110KPa | |
Relative Humidity | ≤95% | |
Anti-vandalism Level | IK10 | |
Installation | Wall-mounted |