Strobe lights won't work.

A strobe light is polarity conscious. Incorrectly wiring a strobe light is the most common cause for it's non-operation. The light can of course be tested by placing across a suitable DC power supply such as an adaptor or a battery.

The Universal Alarm's screw terminal 3 is the Negative terminal and screw terminal 5 is the Positive terminal.

To connect our strobe lights (cat# K3504BLU) to a Universal Alarm, make sure the black lead from the strobe light is on screw terminal 3 and the blue lead is on screw terminal 5.