





Main unit, auxiliary grounding rod, test leads, simple test leads, battery, instruction manual, certificate of conformity, canvas bag.
Product Specifications
Intelligent multifunction ground resistance tester with compact and robust design
Six major special functions focusing on quality and performance stability
One-button operation and automatic measurement
No hand-crank power generation; button-generated power saving time and energy
Multiple measurement ranges for ground resistance and voltage
Measurement time setting and overload protection function
Large LCD backlit display with 2000 counts, clear white backlight, and unit symbols for easy reading in dark environments
Data hold and backlight keys

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| Item | Detail |
|---|---|
| 4105A | 0.00~199.90Ω (±2.0%+3), 0.00~1999.0Ω, 0.00~19990Ω |
| 4105B | 0.00~99.90Ω (±2.0%+3), 0.00~999.0Ω, 0.00~1000Ω |
Automatic power off after approximately 15 minutes of inactivity
External power supply supported via DC 12V adapter in addition to 8x 1.5V LR6 (AA) alkaline batteries
CAT III 600V safety rating (4105A/B)
Stable performance and easy operation suitable for indoor and outdoor use (not waterproof)
Includes neck strap holes for convenient carrying
Digital LCD with 2000 counts, white backlight, clear and no parallax
Main unit
Test leads
Auxiliary ground rods
User manual
Calibration certificate
Carrying case
Neck strap
CE certified
Overload protection function
Lock function with red indicator light for continuous measurement
Relative measurement (REL)
Data hold (HOLD)
Measurement time setting
Voltage selection for earth and photovoltaic voltage
Multi-range selection for resistance and voltage
Test button for single or continuous measurement
Before testing ground resistance, confirm earth voltage ≤10V using voltage mode
Do not apply voltage between test terminals during resistance measurement
Suitable for harsh environments and field transportation due to rugged design

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