Digital Timer Pulse Controlled is used extensively with dosing systems. The timer is initiated by a Potential Free contact closure, typically a water meter. As a result the Red LED will illuminate and the relay contacts will change for the duration of the time set. Further incoming pulses will be ignored for the duration. When the time period has expired, the relay will de-energise and the unit will wait for the next pulse. The unit is Din compatible and is pluggable for ease of maintenance.