This LED with soldered constant current electronics may be connected at any voltage between 4–30 V/DC. The LED shines with almost constant brightness and has a consumption of ca.15 mA. An additional protective resistor is not required. The supplied LED can be exchanged for any other LED. It is also possible to connect several LEDs in series.
Kemo4024028031422
Price: £6.49 from Conrad Electronic
| Stockist | Price | |
|---|---|---|
| £6.49 | Visit Store |
Switches a relay when light or dark (shadow) is sensed. Whenever the light beam from a lamp projected onto doors, windows or similar is interrupted by a person, the device produces an alarm. Can also be used as a dimmer switch.
Can be used as a pre-amplifier for power amplifiers or as headphone amplifier.
When installed in a hemispherical reflector such as a plastic ball cut in half,this highly sensitive microphone can record sounds and speech at a distance of several hundred metres! Ideal for animal watchers, detectives, etc.