This module is designed to activate a clean set of relay contacts when the closed input loop is activated twice within the time set by the on-board jumpers, or by being left open longer than the designated time. The module can be set to auto reset or to latch using the red latch/non-latch jumper.

Closed circuit reset will initiate the timer for the set duration - between 6 and 135 minutes (2h 15m). If the time is not reset in this duration the unit will go into alarm condition, via a buzzer and LED output. After a second preset time the unit will change relay state if reset has not been initiated.

This unit is fully programmed for auto change summer/winter daylight saving according to MEZ, GB and USA. The single channel digital time module with clean changeover 5 amp on-board relay has 28 memory locations, with free block formation and separate programming of switch ON and OFF times.

Unit has double clean changeover contacts and LED indication for supply and timer running. LED and buzzer outputs are activated on start time release. Start time by either open circuit loop, closed loop or pulsed AC or DC. Option for latched start or auto-reset.

The PUL1 Pulse Delay Module is a small compact PCB that will energise a set of 1A relay contacts when the NC loop is opened. When the loop has been opened a timer starts and the relay will remain energised until the time has expired at which point it will de-energise. The timer is software driven and is available in 1-8 5-40 10-80 seconds, see the spec sheet for full details.
The timer can also be triggered from a -VE input or by leaving the loop open and applying power to the PCB and the timer will start on power up.