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AS3079CKT - Light / Dark Activated Switch (Schmitt Trigger)

Ability Level 2: ModerateProduct Formats Available : Pre-Assembled Module (AS) or
Self-Assembly Electronic Kit ( Soldering Required)

This Light/Dark activated relay board switch uses an LDR and Schmitt trigger circuitry to eliminate the problem of relay chatter at the trigger threshold. This allows the switch to operate effectively where there is a gradual light change (i.e. dawn and dusk).

The Light/Dark mode switch is used to select either light or dark activation of the relay. This enables the unit to be operated in its low-current standby mode for the majority of the time according to your application.

  • Adjustable turn-on sensitivity
  • Switch to select either 'light' or 'dark' activation
  • LED status indicator
SupplyRegulated 12Vdc (Order Code 660.446UK with connector 778.106)
Current consumptionLight Activated: <15mA standby, <45mA relay active
Dark Activated: <5mA standby, <55mA relay active
Output Type1 x SPDT Relay
Maximum Output
Load (Resistive)
Up to 48Vac or 28Vdc @ 2 Amps max. (Relay Datasheet)
Output ConnectionsNO, NC, C (Relay FAQ)
Board Dimensions33 x 60 x 20mm
Fixing Holes 4 x M3
Board ConnectionsScrew terminal blocks
Product FormatsSELF-ASSEMBLY Electronic Kit (KT) or
PRE-ASSEMBLED Electronic Module (AS) Product Formats Info
DocumentationUser Manual
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