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Extech LT45 measures both white and color LED lights.
| Model LT40 | Model LT45 | |
| Foot-candle (Fc) Range | 40, 400 4000, 40000 | 40, 400 4000, 40000 |
| Lux Range | 400, 4000, 40000, 400000 | 400, 4000, 40000, 400000 |
| LED Type | white | white, red, yellow, green, blue, purple |
| Basic Accuracy | ±3% | ±3% |
| Dimensions | 5.2x1.9x1" (133x48x23mm) | 5.1x2.2x1.5" (130x55x38mm) |
| Weight | 8.80z (250g) | 8.8oz (250g) |
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