Functions and Features:
twenty-route intercom master station may
connect 20 pairs of
intercom extensions for visitation.
¡ñ The master station may
set, control and display talk
time of each intercom extension and
display if each
extension is in talk by LED.
¡ñ Listen in the talk of
each extension (or with
earphone), with realistic and clear voice
adjustable volume, and there is no
in the extension.
¡ñ The master station has
recording jack which may
output audio signal to achieve the
¡ñ Easy installation,
connect the extensions with
non-polar N+1 cored wires. (the maximum
transmission distance 1Km).
¡ñ The 18V2.5A switch-mode
power supplies will be
delivered together with the master