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Agilent U1240 Series Handheld 
Digital Multimeters
 
Helping You Check and Fix More Installation 
and Maintenance Bugs
Data Sheet
The Agilent U1240 Series handheld digital multimeters enable you to check 
more with wider measurement ranges. They feature true RMS readings on their 
10,000-count displays. The adjustable backlighting allows you to complete your 
jobs even in subdued lighting conditions, or to simply prolong battery life. Your 
maintenance tasks are greatly simplified due to the built-in switch counter, 
harmonic ratio, dual and differential temperature capabilities, with just a press 
of the button. The meters have a high safety rating with CAT III 1000 V and 
CAT IV 600 V protection and are certified to CE and CSA standards. On top of 
that, the U1240 Series comes with a certificate of calibration and test report – 
at no extra cost. 
The latest multimeters in this series, the U1241B and U1242B, now come in 
vivid orange cases, offering the capabilities and functions you need.
Key features
Check more, fix more
• 10,000-count display
•  0.09% basic DCV accuracy 
•  True RMS AC measurement
•  Basic functions — ACV, DCV, 
ACI, DCI, resistance, frequency, 
diode, continuity tests
•  Advanced functions — 
Capacitance, temperature, 
MINMAX recording
Ease of use
•  Adjustable backlighting — 
two intensity levels
•  Manual data logging (U1242B 
only)
•  Built-in switch counter, 
harmonic ratio (U1242B only), 
dual/differential temperature 
capabilities (U1242B only)
Built to last
•  Overmold body casing
•  CAT III 1000 V and 
CAT IV 600 V safety protection
•  Certified to CE and CSA 
standards
• Operating temperature: 
–10 to 55 °C
Diode Test
Switch Counter
DCV/ACV:
 0.1 mV to 1000 V
Harmonic Ratio 
(U1242B only)
Backlight: 
Two intensity levels
Resistance: 
0.1 Ω to 100 MΩ
ACµA:
 0.1 µA to 10 mA
Capacitance: 
0.1 nF to 10 mF 
Ambient temperature
ACmA:
 0.01 to 1000 mA
ACA:
 0.01 to 10 A
Frequency:
 1 Hz to 200 kHz
MINMAX Recording
T1–T2 Differential 
Temperature 
(U1242B only)
Temperature: 
–40 to 1000 °C
Manual Data Logging 
(U1242B only)
Functions and ranges at a glance