Catalog > Consumer Electronics > Security & Alarms > Access Control > Intercom Systems Power Supply PCB PCB Power Supply for M20 School Intercom M20XRPCBO Power Supply PCB for M20 School Intercom 2,505.72 ZAR inc for 1 Each 0 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Downloads Datasheet - M20 Intercom Manual PDF File 130.98 KB