Basic Light / Dark Activated SwitchQuasar ElectronicsThis circuit uses a simple LDR based circuit in super-Darlington set-up to turn on the relay output. A Light/Dark mode switch is used to select either light or dark activation of the relay...Electronics > Circuit Components > Printed Circuit Boards > Development Boards3079AKT3079AKT11.94Quasar Electronics Limitedhttps://quasarelectronics.co.uk/Item/3079a-basic-light-dark-activated-switch
Product Formats Available : Pre-Assembled Module (AS) or Self-Assembly Electronic Kit ( Soldering Required)
This circuit uses a simple LDR based circuit in super-Darlington set-up to activate the onboard relay (see Relay FAQ for details).
Best suited to applications where the change in light level is large and the transition quick e.g. to activate a music box when the lid is opened.
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