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A photo emitting diode and a phototransistor housed in a compact package that can be used for counting, rotational speed etc. The device has a very fast rise/fall time - just 1ms.
Price: £1.09 from Tesco
| Retailer | Price | |
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| Tesco | £1.09 | Go to shop |
Product specifications Variant Colour White Key Information Type Halogen Quantity 1 Colour White Features Lifespan (yrs) .33 Style Maplin
A range of coloured reflector bulbs as used for decorative and particularly disco lighting.
A range of coloured reflector bulbs as used for decorative and particularly disco lighting.
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