2 Keysight U1281A/U1282A Quick Start Guide
Safety Notices
A CAUTION notice denotes a 
hazard. It calls attention to an 
operating procedure, practice, or 
the like that, if not correctly 
performed or adhered to, could 
result in damage to the product 
or loss of important data. Do not 
proceed beyond a CAUTION 
notice until the indicated 
conditions are fully understood 
and met.
A WARNING notice denotes a 
hazard. It calls attention to an 
operating procedure, practice, or 
the like that, if not correctly 
performed or adhered to, could 
result in personal injury or 
death. Do not proceed beyond a 
WARNING notice until the 
indicated conditions are fully 
understood and met.
EMC Information
The U1281A/U1282A is 
EMC-certified in compliance with 
IEC 61326-1/EN 61326-1, ICES/
NMB-001, and AS/NZS CISPR 11.
Safety Information
The U1281A/U1282A is 
safety-certified in compliance with 
IEC/EN 61010-1, IEC/EN 
61010-2-033, CAN/CSA-C22.2 No. 
61010-1-12, CAN/CSA-C22.2 No. 
61010-033-12, ANSI/UL 
61010-1-12, and ANSI/UL 
61010-033-12. Use with standard 
or compatible test probes.
Safety symbols
Direct current (DC)
Alternating current (AC)
Caution, risk of 
electric shock
Caution, risk of danger 
(refer to this manual for 
specific Warning or 
Caution information)
Earth (ground) terminal
Equipment protected 
throughout by double 
insulation or reinforced 
insulation
Category III 1000 V 
overvoltage protection
Category IV 600 V 
overvoltage protection
2 Keysight U1281A/U1282A Quick Start Guide
For further safety information details, refer to the 
Keysight U1281A/U1282A Handheld Digital Multimeter 
User’s Guide.