Not the greatest image but it gives an idea of the user interface located on the front fascia of the panel.

Does SEN have any information on the specifications of Micron Alarms’ Quadroscan 4 alarm panel from the 1980s?

A: Micron Alarm Supplies’ Quadroscan 4 alarm panel featured 4 zones (there were also 2 and 3-zone options), with balanced line circuits and normally closed panic and tamper loops. This panel had a continuously adjustable entry delay from one to 60 seconds, a siren test which operated only when the panel was armed and memory indications covering zone tamper, panic alarms and low battery indicators.

The user interface was simplistic by modern standards, but it did tell a clear event history. The system’s latching memory retained visual indication of functions after the key switch was turned off and memory was cleared during a key switch cycle. To reset memory, the system needed to be disarmed for a minimum of 10 seconds.

An audible fault bleeper would activate if the panel was in a low battery state at switch on or if any zone was unbalanced at switch on. Power supply was 13.6V DC regulated, with a maximum one amp draw and there were 4 switches on the board for isolation, which was designed for high security applications requiring an area to be non-isolatable.

There were selectable low battery functions – in the first, the panel generates an audible signal when switched on to indicate low battery. In this case, the panel will refuse to arm, and the audible indicator will continue to sound for the period the key switch is left in the on position. In the second mode the panel would generate an audible signal for the period of the exit delay only, at which time the system will arm.

Other features include end of line monitoring with incandescent light indication, front and rear tampers, a controller box with 1.6mm of zinc-coated steel and an optional high security double-plated cover, an auto siren shut off after 10 minutes, 12V DC, 1.2aH battery backup, incandescent lamp reset on front panel for arm/disarm and a simple 3-wire connection.

If anyone has more info on the Quadroscan, including its development or a colour image, please fire it over to [email protected] and we’ll add it to this information.