Input Limits
Function
Maximum Input
Voltage AC or DC
Frequency, Duty Cycle
Resistance, Continuity, Diode Test, Capacitance
µA, mA Current AC or DC
10A Current AC or DC
600V AC RMS/600V DC
600 V AC RMS/600V DC
250V AC RMS/250V DC
500mA 600V fast acting fuse
10A 600V fast acting fuse
(30 seconds max. every 15 minutes)
2
General Specifications
Insulation
Class 2, Double insulation
Diode Test
Test current 0.3mA typical, open circuit voltage < 3.3V
Continuity Test
Audible signal if the resistance is approx. 50
Ω
or less
Low Battery Indication
Display
4000 count LCD display
Over Range Indication
“OL” is displayed
Polarity
Minus symbol “-” is displayed for negative polarity
Measurement Rate
2 readings per second, nominal
Auto Power Off
After approx. 15 minutes of inactivity
Input Impedance
10M
Ω
(VDC & VAC)
AC Response
True RMS
AC Bandwidth
50/60Hz
Batteries
Two “AAA” 1.5V batteries
Fuses
µA. mA ranges: 500mA/600V (5 x 20mm) fast blow fuse
10A range: 10A/600V (5 x 20mm) fast blow
Operating Temperature
41°F to 104°F (5°C to 40°C)
Operating Humidity
Max 80% up to 87°F (31°C) decreasing linearly to 50%
at 104°F(40°C)
Storage Temperature
-4°F to 140°F (-20°C to 60°C)
Storage Humidity
<80%)
Operating Altitude
Dimensions/ Weight
4.8” x 2.6” x 1.4”/0.32lb (121 x 67 x 35mm/140g)
Complies with UL 61010-1 v.3 for measurement
Category lll 600V, Polution Degree 2
Safety
2000 meters
“ ” is displayed
Introduction
1
The Southwire 16040T True RMS Multimeter wirelessly transmits data to
the MApp™ mobile app via Bluetooth
®
technology allowing you to view,
save, organize and share datalogs as well as take measurements from a
safe distance. Visit nextgenmeters.southwiretools.com for mobile app
download information. Functions include AC/DC voltage and current,
resistance, continuity, capacitance, frequency, duty cycle, diode test. The
16040T also offers the added convenience of a built-in flashlight. This meter
is fully tested and calibrated and, with proper use, will provide many years
of reliable service.
WARNINGS
• Read, understand and follow Safety Rules and Operating Instructions in
this manual before using this meter.
• The meter’s safety features may not protect the user if not used in
accordance with the manufacturer’s instructions.
• Ensure that the test leads are fully seated in the input jacks and keep
fingers away from the metal probe tips when taking measurements.
• Before changing functions using the selector switch, always disconnect
the test leads from the circuit under test.
• Use only UL listed test leads with the proper safety category rating.
• Comply with all applicable safety codes. Use approved personal
protective equipment when working near live electrical circuits -
particularly with regard to arc-flash potential.
• Use caution on live circuits. Voltages above 30 V AC rms, 42 V ac peak,
or 60 V dc pose a shock hazard.
• Do not use if the meter or test leads appear damaged.
• Verify operation before using meter by measuring a known live voltage.
• Do not use the meter in wet or damp environments or during electrical
storms.
• Do not use the meter near explosive vapors, dust or gasses.
• Do not use the meter if it operates incorrectly. Protection may be
compromised.
• Do not operate meter while Low Battery warning is on. Replace
batteries immediately.
• Do not apply voltage or current that exceeds the meter’s maximum
rated input limits.
