หมวดหมู่ : ETCR Electronic Technology , 
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Product Main Function
1. Earth resistance measurement, Range: 0.010Ω~2000Ω
2. Resolution: 0.01Ω
3. Accuracy: ±2%rdg±3dgt
4. Earth voltage measurement,Range: AC 0~600V
5. Resolution:1V
6. Data storage: 400 sets
7. Alarm function: audible and visual alarm