REED ST-9809 AC Leakage Current Tester


This AC leakage current tester features a large 4000 count LCD display and 40 segment digital analog bargraph. The ST-9809 includes leads for voltage testing and a protective boot for added durability in the field.


  • Designed to measure current leakage
  • 4000 count LCD display
  • Max/Min and Data hold measurements
  • Continuity and relative functions
  • Digital analog bargraph
  • 1.2" (30mm) jaw size opening
  • Low battery indicator and Auto Shut Off
  • Cat. II 600V safety rating


Range40mA, 400mA, 4A, 40A, 100A
Accuracy (50-60Hz)40mA: ±(1.0% +0.5mA)
400mA: ±(3.0% +5.0mA)
4A: ±(4.0% +0.1A)
40A: ±(4.0% +1.0A)
100A: ±(5.0% +1.0A)
Resolution10µA, 100µA, 1mA, 10mA, 100mA
Accuracy (50-60Hz)±(1.5% +2 dgts.)
Range40 to 400Ω
Accuracy±(1.0% +2 dgts.)
General Specifications
Range SelectionManual
Sampling TimeDisplay: 2x / sec.
Bargraph: 20x / sec.
Display4,000 count LCD display
Display HoldYes
Zero Push Button AdjustmentYes
Relative ModeYes
Analog BargraphYes (40 segment)
Continuity CheckAudible signal if resistance <40Ω
Auto Shut OffYes (after 30 minutes, off)
Power Supply9V Battery
Low Battery IndicatorYes
Jaw Opening1.2" (30mm)
Overvoltage CategoryCAT. II 600V
Operating Temperature14 to 122°F (-10 to 50°C)
Storage Temperature-4 to 140°F (-20 to 60°C)
Dimensions8.3 x 2.4 x 1.4" (210 x 62 x 36 mm)
Weight7.1 oz (200g)