3079B - Light / Dark Activated Switch With Hysteresis

3079B - Light / Dark Activated Switch With HysterisisThis board uses an LDR and built-in hysterisis of the LM741 op-amp IC 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
Technical Specifications
Supply Regulated 12Vdc (Order Code PSU446 with connector 778.106)
Current consumption Light Activated: <1.5mA standby, <46mA relay active
Dark Activated: <2mA standby, <45mA relay active
Output Type 1 x SPDT Relay
Maximum Output
Load (Resistive)
Up to 240Vac or 28Vdc @ 2 Amps max. (Relay Datasheet)
Output Connections NO, NC, C (View PDF FileRelay FAQ)
Board Dimensions 37x60mm
Board Connections Screw terminal blocks
Product Formats SELF-ASSEMBLY Electronic Kit (KT Soldering Required) or
PRE-ASSEMBLED Electronic Module (AS) more
Documentation View PDF FileUser Manual
Product
Code
Description Price each exc. VAT (GB Pounds £) Including VAT each
1-4 off
Quantity
1-4 off 5-19 off
3079BKT
Soldering Required
Light / Dark Activated Switch With Hysteresis Kit £8.29 £7.05 GB£9.95
AS3079B ASSEMBLED Light / Dark Activated Switch With Hysteresis £12.46 £10.59 GB£14.95

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