
Carlo Gavazzi introduces the ST-04, a compact, portable sensor tester designed to support rapid diagnostics during bus manufacturing, installation, and servicing. Ideal for factory floors, integration lines, and depot workshops, the ST-04 simplifies troubleshooting of DC 3-wire and 4-wire sensors, cutting downtime and improving workflow efficiency.
Despite its compact size (13 x 5 x 3 cm), the ST-04 packs powerful functionality:
Built for field technicians and production teams, this plug-and-play tool is especially valuable for sensor testing in bus doors, lighting, HVAC modules, and safety systems — wherever precise sensor diagnostics are critical.
"With the ST-04, we’re giving our customers a practical, portable tool that complements our smart configurator lineup, making day-to-day tasks easier," says Davide Boschetti, International Product Specialist at Carlo Gavazzi.




