The board has space for an LED with current limit resistor (both available separately) which will light when the output turns on.

The Darlington pair transistor configuration allows an output current of up to half an amp to be controlled. Operating voltage 3V to 10V (lower voltages allow for better adjustment of the switching point).

Possible applications include:

Garden light that switches on automatically at night

Draw alarm, which sound when a dark draw is opened

Line following robot (using 2 light activated boards)

Kit contents:

1 x 47Kohm potentiometer

2 x BC337 NPN transistors

1 x Phototransistor

1 x 220ohm resistor

1 x light activated switch PCB

Physical characteristics:

• PCB Length: 53mm.
• PCB Width: 25.5mm.
• PCB Component Count: 5.

Electrical characteristics:

• Voltage Nominal: 3V.
• Voltage Range: 2V - 9V.
• Standby Current: 0.12mA.

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