Fangrui Product Details 1. Duoyi Dy4100 High-precision Digital Ground Resistance Meter Resistance Tester 2. The Circuit, Structure And Technique Of Traditional Earth Resistance Tester Have Been Improved And The New Design Is Both Fine-looking And Practical. 3. This One Has More Complete Functions, Higher Accuracy, More Convenient And Reliable For Operation And More Suitable For Outdoor Use With Dust And Wet Proof Structure. 4. It Can Test Earth Resistance Of Various Earth Systems Including Power Systems, Electric Equipments, Lightning Conductors As Well As Resistance Value Of Low Resistance Conductor And Ac Voltage Test. 5. Ground Resistance Measurements From 0.01 To 2000 With 0.01 Resolution. 6. Data Hold, Low Battery Warning. 7. Resistance: 0202002000 Ohm +-(+3) 8. Voltage: 0-30v +-(+5) 9. Resolution: 0.01 Ohm 10. Matched Battery Model: 11. 5v(r6aa) Battery X 6 12. 12v(23a) Battery X 1 13. Battery Is Not Included In The Accessory