REED R5020 400A AC Clamp Meter with Temperature and Non-Contact Voltage Detector


This compact autoranging clamp meter is capable of measuring AC current, AC/DC voltage, resistance, frequency, capacitance, duty cycle and temperature. Featuring double molded plastic housing, the R5020 includes diode check and continuity functions and a non-contact voltage detector built into the clamp tip.


  • Measures AC current, AC/ DC voltage, resistance, capacitance, frequency, duty cycle and temperature
  • 4000-count LCD display with low battery and overrange indicators
  • Built-in non-contact voltage detector with LED indicator
  • Display hold and relative mode
  • Diode test and continuity check functions
  • Durable double molded plastic housing
  • Cat. III 600V safety rating


AC Current
Range40, 400A
AccuracyAC: ±(2.5% rdg. + 8 dgt.)
Resolution0.01, 0.1A
AC/DC Voltage
RangeAC: 4, 40, 400, 600V
DC: 400mV, 4, 40, 400, 600V
AccuracyAC: ±(1.8% rdg. + 8 dgt.)
DC: ±(1.5% rdg. + 2 dgt.)
ResolutionAC: 0.001, 0.01, 0.1, 1V
DC: 0.1mV, 0.001, 0.01, 0.1, 1V
Range400Ω, 4, 40, 400kΩ, 4, 40MΩ
Accuracy±(1.5% rdg. + 2 dgt.)
0.1Ω, 0.001, 0.01, 0.1kΩ, 0.001, 0.01MΩ
Range40, 400nF, 4, 40, 100µF
Accuracy±(3% rdg. + 5 dgt.)
Resolution0.01, 0.1nF, 0.01, 0.1μF 
Accuracy±(1.2% rdg. + 2 dgt.)
Range-4 to 1400°F (-20 to 760°C)
Accuracy±(3.0% rdg. + 9°F)
±(3.0% rdg. + 5°C)
Resolution1°F, 1°C
General Specifications
Range SelectionAutoranging / Manual
Display4,000 count LCD display
Display HoldYes
Relative ModeYes
Diode TestYes
Continuity CheckAudible signal if resistance <150Ω
Duty CycleYes 
Non-Contact Voltage DetectorYes
Autoshut offYes (after 15 mins)
Power Supply2 x AAA
Low Battery IndicatorYes
Jaw Opening1.2" (30mm), up to 350 MCM
Overvoltage CategoryCAT. III 600V 
Product CertificationsCE
Operating Temperature32 to 122°F (0 to 50°C)
Storage Temperature-4 to 140°F (-20 to 60°C)
Dimensions7.9 x 2.6 x 1.5" (200 x 66 x 37 mm)
Weight7.2oz (205g)