Timer, Door Control, 12 to 24 VAC or VDC IsolatedAC or DC Voltage 5V to 24V Trigger, 1 Second to 1 Minute, Sounder
Altronix DL3 is a 1 second to 1 minute door control timer that is used for basic door operation. This timer, when activated by a momentary or maintained trigger, has an audible indicator.