Click the key to enable the annunciator controls. Tone 0: Temporal Tone 1: March Time Tone 2: Continuous Use the corresponding keys on your keyboard to change the tone.
This Simplex MultiTone TrueAlert System Features: A Medical Alarm with a Gentex Commander 3 Set To: Chime, A Medical Pull Station, Simplex TrueAlarm Heat Detector & Smoke Detector, A Simplex Annunciator, A Simplex T-Bar, a carbon monoxide detector, and The Tones Temporal, March Time, and Continuous. Based in my elementary school's old system. I got replaced with a brand new EST system.