Catalog > Consumer Electronics > Security & Alarms > Access Control > Intercom Systems 40 Way Intercom System 40 Way School Intercom System Used with the SS3- Sub Station M20X40 SCHOOL INTERCOM 40 WAY MASTER STATION WITH POWER SUPPLY TO BE USED WITH SUB STATION -SS3 18,922.86 ZAR inc for 1 Each 0 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview The M20 range of school intercoms is a cost effective basic intercom, where only one Master Station and up to a maximum of 60 class room Sub Stations are required.The range includes a 6-way M630, 12way M1230, 20-way M20x20, 40-way M20x40 and 60-way M20x60.The system consists of the Master Station with all the selection switches. A power supply box which also contains the main audio/control PCB which is connected to the master via a 3 meter cable. A Termination Box with plug in terminals for all the connections to the Sub Station, it is also connected to the master via a 3 meter cable.The system requires a 220/240vac power point. A battery backup is available for the system.The M630 and M1230 do not have a Termination Box, the connection to the Sub Station can be made with connector blocks. Specifications Dimensions : 0.5mm solid plain copperInsulation : 70 °C PVCLay Lengh : VariousSheathing : 7°C PVCColor: White Downloads Datasheet - M20X40 PDF File 493.29 KB