Greenlee Multifunction Electrical Tester
Efficiently Measure Amps, Volts and Resistance Without Touching a Button
What's special about this electrical meter?
- Detects voltage in live lines without touching the wire, to minimize accidents and ensure a high degree of safety
- Low impedance virtually eliminates stray or "ghost" voltage, providing a more accurate reading
- When set to Auto-mode, this meter automatically selects the proper measurement based on input, to efficiently test any electrical circuit
- Provides both audible and visual confirmation for clear, easy-to-understand test results
- Click for More Features

This Multifunction Electric Tester by Greenlee will allow you to measure amperage, voltage, and resistance without the hassle of even turning a dial. This meter is equipped with a data hold element that saves important readings, as well as an Auto-Off feature that saves power to prolong battery life.
Part # | Description | Color | Price |
---|---|---|---|
GL-GT-540 | Multifunction Electrical Tester | Green |
- Measures AC / DC voltage with high impedance, which minimizes circuit loading for a pure measurement
- Low battery indicator and auto shut-off for longer battery life
- Data hold button to ensure proper logging of measurements
- Audible diode and continuity testing available in one unit
- Equipped with an internal memory to save test results
- Lifetime limited manufacturer's warranty
Included Accessories:
- 9V battery
- Test leads
- Carrying case
Part Number | GL-GT-540 |
---|---|
Display | 6000-count LCD |
Polarity | Automatic |
Display Update Rate | 5 per second |
Temperature Coefficient | Nominal 0.15 x (specified accuracy) per °C below 18° C or above 28 °C |
Power Off | After 3 minutes of inactivity |
Noise Rejection | |
Common Mode Rejection Ratio | >60dB from 0Hz to 60Hz when measuring ACV |
>100dB at 0Hz, 50Hz, and 60Hz when measuring DCV | |
Normal Mode Rejection Ratio | >30dB at 50Hz and 60Hz when measuring DCV |
Operating Conditions | |
Temperature | 14° to 122° F (-10° to 50° C) |
Relative Humidity (non-condensing) | 80% Max for temperatures up to 88° F (31° C), decreasing linearly to 50% maximum at 122° F(50° C) |
Altitude | 2000m (6500') maximum Indoor use only |
Pollution Degree | 2 |
Storage Conditions | 30° to 60° C (-22° to 140° F), 0% to 80% relative humidity (non-condensing); Remove battery |
Battery | 9 V (NEDA 1604, JIS 006P or IEC 6F22) |
Overvoltage Protection | 1000 VDC/VAC RMS, 50/60 Hz |
Overload Warning (voltage mode only) | Meter displays “OL” and beeps |
Measurement Categories | Cat III, 1000 V per UL 61010B-1 |
Cat IV, 1000 V per IEC 61010-1, 2nd edition | |
Auto V•Ω Mode Response Time | 1 second maximum |
AC Response | Average-sensing, RMS calibrated |
Resistance Measurement | 600.0; 6.000, 60.00, 600.0 K; 6.000 M |
Capacitance | 100.00, 1000.0 µF; 10.00, 100.0, 2000 F |
Display | 6000-count LCD |
Measurement Category | CAT IV, 1000v per IEC 61010-1; CAT III, 1000v per UL 61010B-1 |
Voltage Measurement | 6.000, 60.00, 600.0, 1000V |
MANUALS & USER GUIDES -
- GT-540 Instruction Manual (PDF)
630 Kb
RELATED ARTICLES -
- 10 Easy Ways to Protect Against Electrical Hazards
- Learn More About Digital Multimeters
- What Exactly is an Electrical Fuse?
Did you know that we can give you a quote for most of our products, including shipping?
You can also call us toll free 1-833-3CABLEORG (1-833-322-2536)>
Questions & Answers
Do you have any questions about this product?
Let our experts and customers resolve all your doubts