It is a portable wrist strap tester, equipped with a 9 volts battery.
It verifies that a continuous path between the operator’s wrist strap and ground cord exits.
With a test voltage of 9 volts DC, the tester is specially designed to perform the test without harm to the operator.
| LED Display | Resistance (±5%) | Indicator |
| OK (green) | 800KΩ ≈ 10MΩ | OFF |
| HI (yellow) | above 10MΩ | ON |
| LO (red) | below 800KΩ | ON |
