The delayed release timer is a simple low cost and versatile timer. Suitable for door access, door open warning systems, intruder, fire, CCTV systems or other applications where a reliable timer is required. It has been designed for 12 or 24 Volt DC operation and has a double pole relay rated 2 Amps at 24 Volts DC complete with LED indication.
OPERATION - There are 3 modes
With LK2 in the relay will latch on after a trigger input until reset by shorting reset pins (LK1).
Non-latched mode (timed)
With LK2 removed the relay can be activated by a momentary trigger for a timed period, ie. 0 - 15 minutes adjusted by the potentiometer and LK4.
Delayed Mode (timed)
With LK2 removed when a permanent trigger is removed the relay will activate after a timed period, ie. 0 - 15 minutes. It will reset once the trigger is reapplied.
This may be positive or negative voltage. The input can be a brief pulse or a continuous signal.