
KEY FEATURES
• Visual indication of 80 to 250V
(AC or DC)
• Easy to use; no test leads or battery
needed
• UL approved
• Double-insulated housing
• Pocket clip
SAFETY
INSTRUCTIONS
Ꮨ Warning Ꮨ
To avoid possible electric shock or
personal injury, and to avoid damaging
the tester or the equipment being
tested:
• Do not use the ST400 in any way not
detailed in this manual or the tester's
safety features may be compromised.
• Never use the tester to detect the
presence of voltages higher than
250V (AC or DC).
2
DANGER
Electric
Shock Risk
DANGER
Electric
Shock Risk
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