ANALOG EARTH RESISTANCE TESTERS
MODEL
ST-1505
1805 ER
2105 ER
2705ER
4105 ER
Earth Resistance Test
10/100/1000 Ω
10/100/1000 Ω
12/120/1200 Ω
10/100/1000 Ω
12/120/1200 Ω
Earth Voltage Test (ACV)
30V
30V
30V
30V
30V
Terminal
3
3
3
3
3
Auto Power Off
√
—
—
—
—
Batter Check
√
√
√
√
√
Open Circuit Indication
—
√
√
√
√
Long Test
√
√
√
√
√
Lamp for Scale Panel
—
—
—
—
√
Water Proof
—
—
√
—
√
CE Approved
√
√
√
√
√