Videx 4000 Series amplifier module for VX2300 (0 Button)

Functional speaker module for 2300 system which can be incorporate up to 64 call buttons. The unit circuitry incorporates :
The transmitting amplifier with condenser microphone and volume control;
The receiving amplifier with volume control;
The audio balance circuit with the BALANCE control;
Relay to enable the electric lock (3 contacts: common, normally open and normally closed). It can also operate as capacitor discharge to power directly the electric lock;
The call buttons from 0 to a maximum of 2 depending on the module version;
The illumination LEDs for the card name holder.
The module is available in 3 versions according to the number of built-in push buttons