Sper Scientific 840021 Light Meter Foot Candle - Manual (Page 6)

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7. SPECIFICATIONS
Display Maximum reading 1999
Overload Indicator "1" is displayed on the left of the LCD
Power Supply One 9V battery, current approx. DC 3mA
Range*
200 Range = 0 ~ 199.9 Foot Candle
2000 Range = 200 ~ 1999 Foot Candle
Resolution*
200 Range = 0.1 Foot Candle
2000 Range = 1 Foot Candle
Accuracy* ±5% + 4 digits
Operating Temperature 32 ~ 122°F (0 ~ 50°C)
Operating Humidity Less than 80% RH
Weight 9.9 oz (280g)
Dimensions
Main Unit: 7.9 x 2.7 x 1.2" (200 x 68 x 30mm)
Photo Sensor: 3.2 x 2.2 x 0.3" (82 x 55 x 7mm)
Photo Sensor Lead: Extends to appx. 3½ ft
*Electronic Specifications (23 ± 5°C): Tested under the environment RF
Field Strength less than 3 V/M, and frequency less than the 30 MHz only.
Sensor
The exclusive photo diode and color correction
filter, spectrum meets C.I.E.
Cosine correction factor meets the standard.