Precision Timer Delayed Release Module - 

A small, versatile module, suitable for many simple interface applications where a voltage free relay output is required. For example, it may be triggered from a low current source such as the signal output from an intruder alarm control and used to switch on lights or extra sounders. It can be used with access control and door entry systems to power the door release for an extended time. The module can be selected to either LATCH ON after removal of the trigger input until reset, HOLD ON until a pre-set time delay has elapsed (delayed release, adjustable from 0 to 60 seconds) and TRANSISTORISED RELAY with time set to zero (the relay follows the input trigger).