Light Meters

Light meters, sometimes referred to as lux meters, are instruments that measure light levels or light pollution. You can find out more in our guide to light meters.

How is light measured?

Light can be measured in different ways with different light measurement instruments:

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RS PRO RS-92 Light Meter, 0lx to 40000 lx, ±5 %
RS Stock No.: 155-8901Brand: RS PRO

€ 80.46

€ 80.46 Each (Exc. Vat)

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RS Pro
Light Meter
40000lx
-
-
0lx
-
±5 %
0.1 lx
-
Silicon Photodiode
-
-
Battery
175g
Easy Transfer of Measuring Data to User Smart Phone
35.6mm
206mm
EN 61340-5-1:2007
RS-92
40°C
-
0°C
54 mm
RS PRO Light Meter, 0lx to 50000 lx, ±(4% + 2d)
RS Stock No.: 123-8776Brand: RS PRO

€ 372.68

€ 372.68 Each (Exc. Vat)

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RS Pro
Light Meter
50000lx
-
-
0lx
-
±(4% + 2d)
0.1 Ftc
-
Photodiode
-
-
Battery
335g
Memory Recall Button, Push Button 4 Light Type Select
180mm
72mm
No
-
50°C
-
0°C
32 mm
RS PRO IM720 Light Meter, 400lx to 400000 lx, ±3 %
RS Stock No.: 106-5311Brand: RS PRO

€ 97.40

€ 97.40 Each (Exc. Vat)

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RS Pro
Light Meter
400000lx
-
-
400lx
-
±3 %
3 lx
-
Photodiode
50h
AAA
Battery
80g
Overload Indication, Data Hold Function, Auto Ranging, Real Zero function, Auto Power Off, Over Range Display
23mm
133mm
EN 61340-5-1:2007
IM720
-
-
-
48 mm

€ 151.25

€ 151.25 Each (Exc. Vat)

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RS Pro
Light Meter
200000lx
-
-
200lx
-
±3 (Incandescent) %
-
-
Photodiode
-
-
Battery
250g
Manual Ranging, Manual Zero Adjustment, Max Hold
130mm
55mm
EN 61340-5-1:2007
ILM201L
-
-
-
38 mm
RS PRO ILM1335 Light Meter, 0lx to, ±3% rdg ±0.5% f.s
RS Stock No.: 123-2221Brand: RS PRO

€ 200.86

€ 200.86 Each (Exc. Vat)

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RS Pro
Light Meter
-
-
-
0lx
-
±3% rdg ±0.5% f.s
0.01 lx
-
Photodiode
400h
AAA
Battery
320g
Accurate, Accurate, Auto Power Off Function, Data Hold, Instant Response, Peak Hold Function, Relative Function, Auto Power Off Function, Data Hold, Instant Response, Peak Hold Function, Relative Function
150mm
72mm
No
ILM1335
40°C
-
0°C
35 mm
RS PRO ILM1332A Light Meter, 0.01lx to 200000 lx, ±3 %
RS Stock No.: 123-2220Brand: RS PRO

€ 98.62

€ 98.62 Each (Exc. Vat)

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RS Pro
Light Meter
200000lx
-
-
0.01lx
-
±3 %
0.1 lx
-
Photodiode
200h
-
Battery
250g
Accurate, Accurate, Data Hold, Instant Response, Data Hold, Instant Response
135mm
72mm
No
ILM1332A
40°C
-
0°C
33 mm
RS PRO RS-3809 Light Meter, 40lx to 400000 lx, ±3 %
RS Stock No.: 146-9083Brand: RS PRO

€ 137.94

€ 137.94 Each (Exc. Vat)

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RS Pro
Light Meter
400000lx
-
-
40lx
-
±3 %
-
-
Silicon Photodiode
-
-
Battery
250g
Overload Indication: LCD Screen Will Show OL on the Upper Left-Hand Corner, Cosine Angular Corrected, Light Source Selection and Calibration, Low Battery Indication, Measuring Intensities of Illumination in Lux or Footcandles, Zero Adjustment, Auto Ranging, Spectral Response Close to CIE Luminous Spectral Efficiency, Memory Function, Data Hold, According to JIS C1609: 1993 and CNS 5519 General a Class Specifications, Measuring Lights Source: LED White Light and All Visible Light, Auto Power Off and Disable Function, Relative Spectral (Sensitivity), Maximum/Average/Minimum Hold, Sampling Rate : 2.5 Times per Second for Digital Display
28mm
162mm
JIS C1609:1993 CNS 5519
RS-3809
40°C
-
5°C
63 mm
RS PRO ILM 1337 Light Meter, 0lx to 20000 lx, ±3 % ±5 Digits
RS Stock No.: 123-2222Brand: RS PRO

€ 109.50

€ 109.50 Each (Exc. Vat)

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RS Pro
Light Meter
20000lx
-
-
0lx
-
±3 % ±5 Digits
0.01 lx
-
Photodiode
400h
AAA
Battery
320g
Accurate, Accurate, Data Hold, Instant Response, Data Hold, Instant Response
35mm
72mm
No
ILM 1337
50°C
-
0°C
150 mm
RS PRO IM203 Light Meter, 20lx to 200000 lx, ±3 %
RS Stock No.: 106-5312Brand: RS PRO

€ 388.41

€ 388.41 Each (Exc. Vat)

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RS Pro
Light Meter
200000lx
-
-
20lx
-
±3 %
-
-
Photodiode
200h
-
Battery
250g
Data Logging, USB Interface
38mm
172mm
EN 61340-5-1:2007
IM203
-
-
-
55 mm

€ 641.30

€ 641.30 Each (Exc. Vat)

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RS Pro
Light Meter
99990lx
-
-
-
-
±0.02 % (XY/800 lx Standard Illuminant), ±0.02 (XY/800 lx % @ Standard Illuminant A Measured), ±3 (EV Linerarity) %, ±3 % (EV Linerarity)
-
-
Silicon Photocell
50h
AAA
Battery
345g
User calibration, USB Interface, Illuminance max/min measurement, Data Logger, User reference value setting, Triple Display, LED Colour Bin select, 4-Digit LCD Reading, Data memory and read, Data Hold, Auto Power Off
35mm
150mm
No
-
50°C
-
0°C
72 mm

€ 410.19

€ 410.19 Each (Exc. Vat)

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RS Pro
Luminance Meters
1999lx
-
-
9.999cd/m²
-
±3 (Calibrated to Standard Incandescent Lamp (2856 K % @ +25°C or +77°F)), ±5 (Calibrated to Standard Incandescent Lamp (2856 K % @ +25°C or+77°F))
0.01 lx
-
Single Primary
50h
AAA
Battery
345g
Data Logger Function, Comparator Function, Spectral Sensitivity Close to CIE Photopic Curve, User Calibration Factor and Color-Correction Functions, Accurate and Instant Response, Data Hold Function, Backlit Function, USB Interface, Accumulation Luminance Measurement, Data Memory and Read Function, Autoranging 7 Step, Luminance Ratio A/B, Different B-A and Peak Luminance Measurements, Dual Display, Max/MiVG Function, Deviation % A, 4-Digit LCD Reading
35mm
150mm
No
-
50°C
-
0°C
72 mm
RS PRO ILM01 Light Meter, 0.01lx to, ±3 % ± 5 Digit
RS Stock No.: 123-2223Brand: RS PRO

€ 117.37

€ 117.37 Each (Exc. Vat)

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RS Pro
Light Meter
-
-
-
0.01lx
-
±3 % ± 5 Digit
0.001 Ftc
-
Photodiode
100h
AAA
Battery
320g
Accurate, Accurate, Auto Power Off Function, Data Hold, Instant Response, Point Average Function, Auto Power Off Function, Data Hold, Instant Response, Point Average Function
150mm
72mm
EN 61340-5-1:2007
ILM01
50°C
-
0°C
35 mm
RS PRO ILM 1337 Light Meter, 0lx to 20000 lx, ±3 % ±5 Digits
RS Stock No.: 123-2258Brand: RS PRO

€ 238.37

€ 238.37 Each (Exc. Vat)

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RS Pro
Light Meter
20000lx
-
-
0lx
-
±3 % ±5 Digits
0.01 lx
-
Photodiode
400h
AAA
Battery
320g
Accurate, Accurate, Data Hold, Instant Response, Data Hold, Instant Response
35mm
72mm
No
ILM 1337
50°C
-
0°C
150 mm
RS PRO ILM01 Light Meter, 0.01lx to, ±3 % ± 5 Digit
RS Stock No.: 123-2272Brand: RS PRO

€ 246.84

€ 246.84 Each (Exc. Vat)

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RS Pro
Light Meter
-
-
-
0.01lx
-
±3 % ± 5 Digit
0.001 Ftc
-
Photodiode
100h
AAA
Battery
320g
Accurate, Accurate, Auto Power Off Function, Data Hold, Instant Response, Point Average Function, Auto Power Off Function, Data Hold, Instant Response, Point Average Function
150mm
72mm
EN 61340-5-1:2007
ILM01
50°C
-
0°C
35 mm
RS PRO ILM1332A Light Meter, 0.01lx to 200000 lx, ±3 %
RS Stock No.: 123-2360Brand: RS PRO

€ 227.48

€ 227.48 Each (Exc. Vat)

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RS Pro
Light Meter
200000lx
-
-
0.01lx
-
±3 %
0.1 lx
-
Photodiode
200h
-
Battery
250g
Accurate, Accurate, Data Hold, Instant Response, Data Hold, Instant Response
135mm
72mm
No
ILM1332A
40°C
-
0°C
33 mm
RS PRO ILM1335 Light Meter, 0lx to, ±3% rdg ±0.5% f.s
RS Stock No.: 123-2375Brand: RS PRO

€ 330.33

€ 330.33 Each (Exc. Vat)

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RS Pro
Light Meter
-
-
-
0lx
-
±3% rdg ±0.5% f.s
0.01 lx
-
Photodiode
400h
AAA
Battery
320g
Accurate, Accurate, Auto Power Off Function, Data Hold, Instant Response, Peak Hold Function, Relative Function, Auto Power Off Function, Data Hold, Instant Response, Peak Hold Function, Relative Function
150mm
72mm
No
ILM1335
40°C
-
0°C
35 mm
RS PRO Light Meter, 0lx to 50000 lx, ±(4% + 2d)
RS Stock No.: 123-8792Brand: RS PRO

€ 502.15

€ 502.15 Each (Exc. Vat)

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RS Pro
Light Meter
50000lx
-
-
0lx
-
±(4% + 2d)
0.1 Ftc
-
Photodiode
-
-
Battery
335g
Memory Recall Button, Push Button 4 Light Type Select
180mm
72mm
No
-
50°C
-
0°C
32 mm
RS PRO RS-8809A Light Meter, 4 %
RS Stock No.: 200-3701Brand: RS PRO

€ 188.76

€ 188.76 Each (Exc. Vat)

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RS Pro
Light Meter
-
-
-
-
-
4 %
0.1 lx
-
Photodiode
-
-
Battery
390g
Accurate, Data Hold, Instant Response
20mm
170mm
CE
RS-8809A
40°C
-
0°C
60 mm
Extech SDL400 Light Meter, 0lx to 100000 lx, ±4 %
RS Stock No.: 100-047Brand: ExtechManufacturers Part No.: SDL400

€ 385.99

€ 385.99 Each (Exc. Vat)

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Extech
Light Meter
100000lx
-
-
0lx
-
±4 %
1 lx
-
-
-
AA
Battery, AC Adapter
16.2oz
Adjustable Data Sampling Rate, Offset Adjustment, MAX Readings, Wide Range, Datalogger Date/time Stamps and Stores Readings, Large Backlit LCD Display, Stores Readings, Record/Recall MIN, Cosine and Color-Corrected Measurements, Type K/J Thermocouple Input, Data Hold Plus Auto Power Off With Disable Function
7.2in
-
NIST Standards
SDL400
2372°F
-
-148°F
2.9 in
Extech UV505 Light Meter 40 mW/cm², ±5 %
RS Stock No.: 100-051Brand: ExtechManufacturers Part No.: UV505

€ 246.84

€ 246.84 Each (Exc. Vat)

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Extech
Light Meter
40mW/cm²
-
-
-
-
±5 %
0.01 mW/cm²
-
UV Sensor
-
AAA
Battery
3.2oz
Backlit Display, cosine corrected sensor, display hold, zero function, two selectable ranges
1in
5.2in
CE, FCC, UKCA
UV505
-
-
-
1.9 in