Check the listing for details. Earth Resistance Soil Resistivity Tester with Bluetooth Communication 0-30kΩ. Condition: New. Listed at 676.00 USD. Ground Resistance/Soil Resistivity Tester with Bluetooth Communication 0-30kΩ Product Description Earth Resistance(R)Range:0.00Ω~30.00Ω Resolution:0.01Ω Accuracy:±2%rdg±3dgtRange:30.0Ω~300.0Ω Resolution:0.1Ω Accuracy:±2%rdg±3dgtRange :300Ω~3000Ω Resolution:1Ω Accuracy:±2%rdg±3dgtRange:3.00kΩ~30.00kΩ Resolution:10Ω Accuracy:±4%rdg±3dgtEarth VoltageRange:AC 0.0~600V Resolution:0.1V Accuracy:±2%rdg±3dgtSoil Resistivity(ρ)Range:0.00Ωm~99.99Ωm Resolution:0.01ΩmAccuracy:According to the precision of R(ρ=2πaR, a:1 m-100m, π=3.14)Range:100.0Ωm~999.9Ωm Resolution:0.1ΩmRange:1000Ωm~9999Ωm Resolution:1ΩmRange:10.00kΩm~99.99kΩm Resolution:10ΩmRange:100.0kΩm~999.9kΩm Resolution:100ΩmRange:1000kΩm~9000kΩm Resolution:1kΩmPower SupplyDC 7.4V 2600mAh rechargeable lithium batteryMeasuring MethodEarth Resistance: rated current change-pole method, measurement current 20mA MaxSoil Resistivity: Wenner 4-pole measurementEarth Voltage: average rectification(between P(S)-ES)Test Frequency128Hz/111Hz/105Hz/94Hz(AFC)Test Voltage WaveSine waveShort-circuit Test CurrentAC 20mA maxOpen-circuit Test CurrentAC 40V maxData Storage300setsData HoldData hold function: “HOLD” symbol displayData AccessData read function: “READ” symbol displayOverflow DisplayExceeding measuring range overflow function: “OL” symbol displayLCD DimensionLCD Frame Dimension: 128mm×75mm; LCD Display Dimension:124mm×67mmTester Dimension280mm(L)×260mm(W)×160mm(H)WeightTotal Weight:4765kg(with package)Testing WiresSix wires: each for Red 20m, black 20m, yellow 10m, green 10m, red 1.6m, black 1.6mAuxiliary Earth Rod4PCS:φ10mm×150mmUSB interfaceUSB interface,software supervision, storage data can be uploaded to computer, saved and printed;data transmission line length:1.5mAlarm FunctionMeasuring value exceeds alarm setting value, will "Toot-toot-toot" alarm hintAuto Power-off15 Minutes after power on, will outage and automatic power offOverload ProtectionMeasuring earth resistance: between each interfaces of C(H)-E,P(S)-ES, AC 280V/3 secondsInterference TestAutomatic recognition of interference signal , interference voltage higher than 5V will display “NOISE” symbolAuxiliary Grounding TestAuxiliary earth resistance test function: 0.00kΩ~30kΩ(100R+rC