Welcome to Avs School intercom systems

All Version Systems for your school intercom installation, Microsound intercom repairs, School intercom repairs and systems upgrade

School intercom installation, Intercom upgrades

Microsound grew up with most of us. There’s hardly a School Teacher, a Secretary or Principal that hasn’t at some time or other addressed his students through a Microsound School Intercom System. Created in 1986 and has been producing good quality Products.

Known over the years for supplying reliable and locally manufactured intercom. Nurse-call, public address and access control products, Microsound now gears itself to face the new Millennium.

Master Stations

SLSI plastic master complete with 3 digit display and sockets

SLSI plastic master complete with 3 digit display, sockets and goose-neck microphone.

Master Controllers/ Microsound intercom upgrades / School Intercom Repairs

Microsound intercom; SLSI 80 Series School Intercom

SLSI cabinet with 12 slots, power supply unit, CPU/audio card and master sub card configured for 4 master stations, slave amp and 8 call-back substations. Expandable to a maximum of 184 call-back substations by adding sub-cards.

Features

Fully electronic exchange with microprocessor control
Compact and has relay switching for reliable audio control.
Four basic sections: Central processing unit (CPU), Master Sub card, Sub card and Power supply (PSU).
CPU consists mainly of the microprocessor, memory, audio amplifier, tone generator and control functions.
The 30w-rms amplifier can drive up to 120 standard sub stations before a booster amplifier is needed.
The power supply module has outputs of 10V, 24V and 42V.
The SLSI-80 operates on 220/250V AC.
Designed for wall mounting for space conservation
Master to master dialing and Master to subs, Master to handset and Master to P.A. calls.
Eight group calls
All call
Auto cancel (5 minutes adjustable)
Auto answer or non auto answer call backs.
Two change of period tones, General tone and Evacuation tone