Function
Main unit and extension call and talkback each other,
Max. 50 extensions can be connected.
This system can permit max. three main units and/or extensions
to communicate simultaneously

Power failure alarm sound pressure
level of main unit: 75db-85db
Output audio power r: ≤5W
Nonlinear distortion: ≤6％
Frequency characteristic: 200Hz～5000Hz
frequency response relative to 800Hz is ±3dB
Call signal is 800±100Hz intermittent tone
Capacity: 50 lines
Operating voltage: DC24V

Color: black（RAL 9005）
IP class: IP20
Weight: 2.1Kg
Power loss: 25W