The Bonitron BSI Safety indicator is a 5-wire safety indicator and test station. It gives the user a visual representation of presence or absence of voltage and the ability to test for voltage with a built in test station. The enclosure is NEMA-4 rated, so the product can be mounted either indoors or outdoors.
| Example Segment | Meaning |
|---|---|
| BSI | Base Model Number |
| 5W | Wire Count |
| VI | Voltage Indicator |
| STP | Safety Test Points |
| 4 | NEMA Rating |