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Light Activated Relay Boards

Light Activated Relay Boards
Light Activated Relay Boards

Light Activated Relay Boards from our Electronic Kits & Modules range for industrial, professional, educational and hobby applications

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Velleman MK125 - Light Sensitive Switch Electronic Kit

MK125 Light Sensitive Switch electronic kit automatically switches on at dusk and turns off at dawn...

£3.91 +VAT, £4.69 Inc
In Stock
AS3079Bv3KT - Light / Dark Activated Dusk Dawn Sensor Relay Switch

New improved version dusk dawn sensor switch with 5 Amp mains rated relay. Light/Dark activation switch. Adjustable trigger sensitivity. LDR and 741 op-amp IC circuitry. Can operate with fast or gradual light change....

Buy 1-4: £8.29 +VAT, £9.95 Inc Each
Buy 5-19: £7.05 +VAT, £8.46 Inc Each
Buy 20+: £6.63 +VAT, £7.96 Inc Each
AS3079AKT - Basic Light / Dark Activated Switch

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...

£8.29 From £6.63 +VAT, £7.96 Inc (Save 20%)
AS3079B - Light / Dark Activated Switch With Hysteresis

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...

AS3079CKT - Light / Dark Activated Switch (Schmitt Trigger)

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...

£8.29 From £6.63 +VAT, £7.96 Inc (Save 20%)
Cebek I-4 (CI004) - 12Vdc Light Activated Relay Module

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...

£12.21 +VAT, £14.65 Inc
In Stock
Cebek I-42 (CI042) - 12Vdc Darkness Activated Relay Module

12Vdc darkness activated detector module with adjustable sensitivity and mains rated relay output. The relay is activated when the light level falling on the detector board drops below a user set threshold. The relay is deactivated when the light level in...

£12.99 +VAT, £15.59 Inc
In Stock
Cebek I-104 (CI104) - 230Vac Light Detector Relay Module

Pre-built 230Vac Light Detector Relay Module with relay output allowing switching of any load up to 230Vac, 5A. Adjustable sensitivity and LED indicator...

£15.55 +VAT, £18.66 Inc
In Stock
Cebek I-142 (CI142) - 230Vac Darkness Activated Relay Module

230Vac darkness activated detector module with adjustable sensitivity and mains rated relay output. The relay is activated when the light level falling on the detector board drops below a user set threshold. The relay is deactivated when the light level i...

£17.82 +VAT, £21.38 Inc
In Stock
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