ST01 Digital Socket Tester with RCD/GFCI Test

Check supported socket-wiring conditions with a compact plug-in tester. The ST01 combines a digital voltage reading with wiring indications and a model-specific RCD or GFCI test.

✅ See a local voltage reading - The display provides a reference at the tested outlet.

✅ Check indicated wiring conditions - Supported polarity checks help identify common connection issues.

✅ Read the result after unplugging - Data hold keeps the last test state available.

✅ Test a matching protective device - The RCD/GFCI function supports the specified trip-check procedure.

Choose the Tester for the Socket Standard

Match ST01E, ST01K or ST01U to the required plug standard using the selection image. The EU/UK and US versions use different protective-device test currents.

Use the tester within its rating and follow the instructions, including notifying users before a trip test. A socket indication does not establish complete installation safety. Two AAA batteries are required and are not included.

Technical details

• ST01 digital socket tester
• ST01E / ST01K / ST01U selections
• 60-250 V L-N measuring range
• 50-60 Hz
• Model-specific RCD/GFCI test
• Data hold
• Two AAA batteries required, not included
• Manual included

Add a clear local socket check to your electrical toolkit.