The MK125 Light Sensitive Switch SELF-ASSEMBLY electronic kit automatically switches on at dusk and turns off at dawn.
It has a relay output that can be used to turn external devices on/offFeatures
|Supply||12Vdc i.e. mains adapter (Order Code 660.446UK)|
|Outputs||1 x SPDT Relays|
|Output Load||5 Amps @ 24V max.|
|Relay Connections||NO, NC, C (Relay FAQ)|
|Board Dimensions||65 x 50mm (2.6" x 2.0")|
|Product Format||SELF-ASSEMBLY electronic kit (KT) Product Formats Info|
|Documentation||Velleman MK125 Assembly Manual|
This 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...
This kit uses the LDR and built-in hysteresis of the 741 op-amp IC circuitry to allow the switch to operate with small and gradual light changes without the problem of relay chatter at the trigger threshold...
This kit uses the LDR and Schmitt trigger circuitry to eliminate the problem of relay chatter at the trigger threshold so that the circuit can be used where the change in light with be small and gradual...
12Vdc light activated detector module with adjustable sensitivity and mains rated relay output allowing switching of loads up to 230Vac, 5A. The relay is activated when the light level falling on the detector board rises above a user set threshold. The rel...