Electron 2 wire audio intercom door release - speaker not working. 6 apartm

Maggie requested 3 quotes from Security Alarm Installers in South Yarra

Electron Audio Intercom 2 wire - 6 Apartments - electric strike door release is working but speaker intercom is not.

Intercom system for entrance of common room drs in 3 story apartment block
Require intercom system for common room doors of apartment block(12 units) -...

Service intercom/doorbell
Door bell / internal intercom/.camera not working

Supply and install new keypad on intercom system
supply and install new keypad on intercom system