230Vac powered 30 minutes to 4 hour non-retriggerable delayed-off timer board module with mains rated relay output. When activated the relay turns on for the user-set time period and then turns off.
The timer is triggered by closing the low voltage Start Input (using for example a volt-free push button or relay contact closure).
This is a non-retriggerable timer - the relay will always turn off at timeout. Any further Start Input triggers received during countdown or it being in an open or closed state at timeout are ignored. The timer resets on timeout and is ready for a new trigger. The Start Input must go open circuit and be closed again to register a new trigger input.
An optional INSTANT-ON mode disables the start input. In this mode, the the relay turns on and the delay countdown commences immediately power is applied to the board. The relay turns off when the user-set time delay time has elapsed. Power must be removed and reapplied for a fresh countdown to commence. Instant-On mode is set using a header jumper not included (Order Code JUMPER-RED).
The delay period is adjustable from 30 minutes to 4 hours using the onboard potentiometers (header pins allow the use of user-supplied external potentiometers if required).
An LED indicates that the relay is active.
Specifications| Operating Voltage | 230Vac mains |
| Current Consumption | 30mA min. - 85mA max. |
| Output | 1 x SPDT Relay |
| Maximum Output Load (Resistive) | Up to 240Vac or 28Vdc @ 5 Amps max. (Relay Datasheet) |
| Relay Connections | NO, NC, C (Relay FAQ) |
| Dimensions (WxDxH) | 84x55x30 mm |
| Enclosure | WCAH2853 |
| Product Format | PRE-ASSEMBLED Electronic Module Product Format Info |
| WARNING | Product operates at mains voltage and is not suitable for children. An isolating enclosure is required (not included). Installation, testing and commissioning should be performed by a competent person. Mains Electricity Info |
