Farfisa. SR40 -buzzer module
 
Electronic ringer module for systems with alternate current call.
 
When installed inside the intercom, it allows the buzzer call to be replaced by the electronic call or a call to be added, e.g. call from landing.
 
 
Features:
 
Intercom systems 4 +1
 
Dimensions:
30(H) x62 (W) x18 (D) mm