User Manual
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3. Safety Instruction
3.1 Safety Certifications
CE, cETLus certification:
EN 61326-1: 2013; EN 61326-2-2: 2013
EN 61010-1: 2010; EN 61010-2-030: 2010; EN 61010-2-033: 2012
CAT III 1000V
CAT IV 600V
Pollution degree 2
Safety standards: double insulation
3.2 Safety Instruction
Warning
To ensure safe operation and service of the tester, follow these instructions. Failure to observe these warnings
can result in severe injury.
1) Do not use the meter without having rear cover in place otherwise electric shock may occur.
2) Check the test leads before use to see if they appear to be damaged.
3) When the “ ” icon shows on LCD, please replace the battery in time to ensure accuracy.
4) The function selection knob should be adjusted to right function and range.
5) The measured signal is not allowed to exceed the specified range to avoid damage or electric shock.
6) It is forbidden to switch scale during measurement or damage may occur.
7) After measuring operation, disconnect test leads and the circuit; after the current measurement, especially
for strong current, it is necessary to power off before disconnecting test leads and circuit.
8) Use caution when working with voltages above AC 30Vrms or DC 60V. Such voltages pose a shock hazard.
9) Do not use the multimeter in extremely high-temperature or high-humidity environment, particularly in the
damp environment in where the product performance may be severely degraded.
10) Do not change the internal circuit of the meter to avoid damage to the meter and user!
11) Clean the meter casing with damp cloth and mild detergent. Do not use abrasives or solvents!
12) Use of test leads:
UT15B PRO/UT17B PRO User Manual UT15B PRO/UT17B PRO User Manual
TESTING IN CAT III/IV MEASUREMENT LOCATIONS
Ensure the test lead shield pressed firmly in place. Failure to use the CAT III/IV shield increases arc-flash risk.
TESTING IN CAT II MEASUREMENT LOCATIONS
CAT III shields may be removed for CAT II locations. This will allow testing on recessed conductors such as
standard wall outlets. Take care not to lose the shields.