General Tools ST400 User Manual v.2

SCREWDRIVER

AC/DC VOLTAGE

TESTER

USER’S MANUAL

ST400

Please read this manual carefully and

thoroughly before using this product.

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

DANGER

Electric

Shock Risk

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).

DANGER

Electric

Shock Risk

2

• The ST400 cannot detect the
presence of voltages below 110V.
Use caution whenever detecting AC
voltages above 42VAC

RMS

or DC
voltages above 60VDC. Both pose a
shock hazard.

• Before using the tester, inspect the
case. Do not use the ST400 if the
case is damaged. Look for cracks
or missing plastic. Pay particular
attention to the insulation around
the connectors.

• Do not operate the tester around
explosive gas, vapor, or dust.

• When using the probes, keep your
fingers behind the finger guards.
Never touch the metal ends of the
probes when making a
measurement.

OPERATING
INSTRUCTIONS

1. Insert the tip of the screwdriver into

the “hot” side of a 110VAC or
220VAC outlet, or touch the tip to a
point on a live circuit.

3

2. Ground the tester by touching your

thumb to the metal button at the end
of the screwdriver’s handle.

DANGER
Electric

Shock Risk

Ꮨ

Warning

Ꮨ

DO NOT TOUCH

portion of the screwdriver tip while it is
contact with the live side of an outlet or
a current-carrying conductor.

3. If voltage is detected, the neon bulb

inside the clear portion of the handle
will glow. If you are testing outdoors
or in a brightly lit area, shield the
handle with your hand to provide a
better view of the bulb.

the exposed metal

SPECIFICATIONS

Voltage Detection Range:

80 to 250VAC/DC

Operating Temperature:

41° to 104°F (5° to 40°C)
@ <80%RH

Dimensions:

5.63 in. (143mm) long x 0.5 in.
(13mm) maximum diameter

Weight: 1 oz. (28g)

4

WARRANTY
INFORMATION

General Tools & Instruments’ (General’s)
ST400 Screwdriver AC/DC Voltage
Tester is warranted to the original
purchaser to be free from defects in
material and workmanship for a period
of one year. Subject to certain
restrictions, General will repair or
replace this instrument if, after
examination, the company determines
it to be defective in material or
workmanship. The warranty period
begins on the date of purchase. You are
encouraged to register your product
online. General will extend your
warranty an additional 60 days if you
register at
www.generaltools.com/ProductRegistry.

This warranty does not apply to damages
that General determines to be from an
attempted repair by non-authorized
personnel or misuse, alterations, normal
wear and tear, or accidental damage.
The defective unit must be returned to
General Tools & Instruments or to a
General-authorized service center, freight
prepaid and insured.

5

Acceptance of the exclusive repair and
replacement remedies described herein
is a condition of the contract for
purchase of this product. In no event
shall General be liable for any
incidental, special, consequential or
punitive damages, or for any cost,
attorneys’ fees, expenses, or losses
alleged to be a consequence of any
damage due to failure of, or defect in
any product including, but not limited
to, any claims for loss of profits.

Register now at
www.generaltools.com/ProductRegistry
to receive a 60-day extension to your
warranty.

6

RETURN FOR REPAIR
POLICY

Every effort has been made to provide
you with a reliable product of superior
quality. However, in the event your
instrument requires repair, please
contact our Customer Service to obtain
an RGA (Return Goods Authorization)
number before forwarding the unit via
prepaid freight to the attention of our
Service Center at this address:

General Tools & Instruments
80 White Street
New York, NY 10013

212-431-6100
Remember to include a copy of your
proof of purchase, your return address,
and your phone number and/or e-mail
address.

7

GENERAL TOOLS & INSTRUMENTS

80 White Street

New York, NY 10013-3567

PHONE [phone]

FAX [phone]

TOLL FREE [phone]

e-mail: [e-mail]

www.generaltools.com

ST400 User’s Manual

Specifications subject to change without notice

©2013 GENERAL TOOLS & INSTRUMENTS

NOTICE - WE ARE NOT RESPONSIBLE

FOR TYPOGRAPHICAL ERRORS.

MAN# ST400

10/23/13