REED R8120 Lux Light Meter with Detachable Sensor, 20,000 Lux


This light meter measures up to 20,000 lux and has a large 4-digit LCD display. The R8120 features a tripod screw mount and tethered sensor allowing for flexible operation in the field.


  • Easy to use, intuitive design
  • Large, 4-digit LCD display
  • Data hold function
  • Zero adjustment screw
  • Tripod mountable
  • Kick stand
  • Over range and low battery indicators


Measuring RangeLux: 0 to 20,000  
Accuracy±(5% rdg.+ 4 dgt)
Resolution1, 10 lux
Response Time<1 sec.
Sensor TypePhoto diode & color correction filter
AutorangingNo (Manual)
Display4-digit LCD
Data HoldYes
Auto ZeroYes
Overrange IndicatorYes
Sampling Rate2 times/sec.
Kick StandYes
Tripod MountableYes
Low Battery IndicatorYes
Power Supply9V battery
Product CertificationsCE
Operating Temperature32 to 122°F (0 to 50°C)
Storage Temperature14 to 140°F (-10 to 60°C)
Operating Humidity Range10-80%
Dimensions7.9 x 2.7 x 1.2" (200 x 68 x 30mm)
Weight9.8 oz (280g)