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Product Specifications
Professional, high-precision, reinforced insulation structure
Overload protection and overrange display
Multi-level adjustable range with rotary switch for easy function switching
Large backlit LCD screen with clear unit symbols, suitable for dark environments
Data hold function and measurement time setting
Automatic shutdown after 5 minutes of inactivity to save power
Continuous testing capability
Low battery indication
Shockproof protective casing for durability and safety
Powered by six 1.5V AA batteries for long-lasting use and easy replacement
| Item | Detail |
|---|

resistance testing
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| Simple 2-wire test (DLX-4100, DLX-4100A, DLX-4100B) | — |
| Precision 3-wire test (DLX-4100, DLX-4100A) | — |
| Precision 4-wire test (DLX-4100B only) | — |
Soil resistivity measurement (DLX-4100B only) with automatic calculation and display
Ground voltage measurement (AC voltage range 0–600 V, ±2% rdg ±2 digits)
Photovoltaic voltage measurement (DC voltage range -1500 V to 1500 V, ±2% rdg ±2 digits; DLX-4100A/DLX-4100B only)
Phase testing and auxiliary functions
Series interference voltage warning during ground resistance and soil resistivity tests
| Item | Detail |
|---|---|
| AC Voltage | 0–600 V |
| DC Voltage (Photovoltaic) | -1500 V to 1500 V (DLX-4100A/DLX-4100B) |
Measurement of grounding resistance for transformers, substations, medium and high voltage transmission towers, railways, oil tanks, foundations, communication equipment, lightning protection grounding, electrical equipment grounding, charging piles, and solar photovoltaic grounding systems
Suitable for various power system equipment grounding resistance testing
Soil resistivity testing for grounding system design (DLX-4100B)
Phase and voltage testing in electrical installations
Test leads corresponding to specific ports (E/COM, P, C, S, H/V, ES)
Auxiliary grounding rods (2 or 4 rods depending on test method and model)
Protective carrying case
Rotary switch for range and function selection
Dedicated function keys for measurement, data hold, backlight, and confirmation
Clear panel layout with labeled input ports and buttons
Reinforced insulation for safe operation
Shock-resistant protective cover to prevent damage
Automatic power-off to conserve battery life
Some advanced functions such as 4-wire precision testing and soil resistivity measurement are exclusive to model DLX-4100B
Photovoltaic voltage measurement is available on DLX-4100A and DLX-4100B models only

AR4105A+ Ground Resistance (2~200Ω)
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