1 second to 20 minute 12Vdc push button activated delay timer board with reset button and a relay output (C, NO, NC). The relay is activated when the START button is pressed and turns off either after time-out or by pressing RESET. The delay time period is adjusted via the onboard trimpot.
Two capacitor values are provided to give different timing periods. The first gives a timing period of <1 second to approx. 10 minutes and the other covers from 1 second to approx. 20 minutes. LED status indicator.
The board uses a traditional 555 timer circuit that shows how to extend the timing period to the maximum.Specifications
|Supply Voltage||Regulated 10 - 15Vdc|
|Current consumption||<6mA standby, <40mA active|
|Delay Adjustment||1 second to 20 minute approx.|
|Output Type||1 x SPDT Relay|
|Up to 48Vac or 28Vdc @ 2 Amps max. (Relay Datasheet)|
|Output Connections||NO, NC, C (Relay FAQ)|
|Dimensions (mm)||~ 43W x 61L x 20H|
|Board Connections||Screw terminal blocks|
|Product Format||SELF-ASSEMBLY Electronic Kit (KT) or|
PRE-ASSEMBLED Electronic Module (AS) Product Formats Info
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