Extech Instruments EX850 User Manual page 3

CAUTIONS

Improper use of this meter can cause damage, shock, injury or death. Read and understand
this user manual before operating the meter.

Always remove the test leads before replacing the battery or fuses.

Inspect the condition of the test leads and the meter itself for any damage before operating
the meter. Repair or replace any damage before use.

Use great care when making measurements if the voltages are greater than 25VAC rms or
35VDC. These voltages are considered a shock hazard.

Always discharge capacitors and remove power from the device under test before
performing Diode, Resistance or Continuity tests.

Voltage checks on electrical outlets can be difficult and misleading because of the
uncertainty of connection to the recessed electrical contacts. Other means should be used
to ensure that the terminals are not "live".

If the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

This device is not a toy and must not reach children's hands. It contains hazardous objects
as well as small parts that the children could swallow. In case a child swallows any of them,
please contact a physician immediately

Do not leave batteries and packing material lying around unattended; they can be
dangerous for children if they use them as toys

In case the device is going to be unused for an extended period of time, remove the
batteries to prevent them from draining

Expired or damaged batteries can cause cauterization on contact with the skin. Always,
therefore, use suitable hand gloves in such cases

See that the batteries are not short‐circuited. Do not throw batteries into the fire.

Do not directly view or direct the laser pointer at an eye. Low power visible lasers do not
normally present a hazard, but may present some potential for hazard if viewed directly for
extended periods of time
3
EXTECH INSTRUMENTS
EX850-en-GB_v2.4 7/16