Signal Tester

The ST-1 uses a 9V battery (not included) to test LED-based signals. It helps identify wires on signals that use magnet wire (e.g. BLMA).

- Color-coded screw terminals for ease-of-use
- Use it to test LED-based signals that do NOT have resistors already attached
- On-board current-limiting resistors provide safe LED currents
- Use with common anode (positive) or common cathode (negative) signals
- Signal mounting hole and 3-position switch let you show off your signal!
- 1 year limited warranty