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Keysight U1270 Series vs U1280 Series Handheld Digital Multimeter Side-by-side Comparison

		U1271A	U1272A	U1273A	U1273AX	U1281A	U1282A
Basic features
Display resolution		30,000 counts (LCD)	30,000 counts (LCD)	30,000 counts (OLED)	30,000 counts (OLED)	60,000 counts (LCD)	60,000 counts (LCD)
AC bandwidth		20 kHz	100 kHz	100 kHz	100 kHz	30 kHz	100 kHz
True RMS		AC	AC + DC	AC + DC	AC + DC	AC + DC	AC + DC

Measurements
Voltage DC	Range	300 mV to 1000 V	30 mV to 1000 V	30 mV to 1000 V	30 mV to 1000 V	60 mV to 1000 V	60 mV to 1000 V
	Basic accuracy [± (% of readings + LSD)]	0.05% + 2	0.05% + 2	0.05% + 2	0.05% + 2	0.025% + 5	0.025% + 5
Voltage AC	Range	300 mV to 1000 V	30 mV to 1000 V	30 mV to 1000 V	30 mV to 1000 V	60 mV to 1000 V	60 mV to 1000 V
	Basic accuracy [± (% of readings + LSD)]	0.7% + 20	0.6% + 20	0.6% + 20	0.6% + 20	0.3% + 25	0.3% + 25
Current DC	Range	300 µA to 10 A	300 µA to 10 A	300 µA to 10 A	300 µA to 10 A	600 µA to 10 A	600 µA to 10 A
	Basic accuracy [± (% of readings + LSD)]	0.2% + 5	0.2% + 5	0.2% + 5	0.2% + 5	0.05% + 5	0.05% + 5
Current AC	Range	300 µA to 10 A	300 µA to 10 A	300 µA to 10 A	300 µA to 10 A	600 µA to 10 A	600 µA to 10 A
	Basic accuracy [± (% of readings + LSD)]	0.9% + 25	0.6% + 25	0.6% + 25	0.6% + 25	0.6% + 25	0.6% + 25
Resistance	Range	300 Ω to 100 MΩ	30 Ω to 300 MΩ	30 Ω to 300 MΩ	30 Ω to 300 MΩ	600 Ω to 60 MΩ	600 Ω to 600 MΩ
	Basic accuracy [± (% of readings + LSD)]	0.2% + 5	0.2% + 5	0.2% + 5	0.2% + 5	0.05% + 2	0.05% + 2
Frequency	Range	99.999 Hz to 999.99 kHz	99.999 Hz to 999.99 kHz	99.999 Hz to 999.99 kHz	99.999 Hz to 999.99 kHz	99.999 Hz to 9.9999 MHz	99.999 Hz to 9.9999 MHz
	Basic accuracy [± (% of readings + LSD)]	0.005% + 5	0.005% + 5	0.005% + 5	0.005% + 5	0.005% + 3	0.005% + 3
Capacitance	Range	10 nF to 10 mF	10 nF to 10 mF	10 nF to 10 mF	10 nF to 10 mF	10 nF to 100 mF	10 nF to 100 mF
	Basic accuracy [± (% of readings + LSD)]	1% + 2	1% + 2	1% + 2	1% + 2	1% + 5	1% + 5
Temperature		K-type	J, K-type	J, K-type	J, K-type	K-type	J, K-type
Diode Test		Yes

Special features
Squarewave output		-	-	-	-	-	Yes
Vsense: non-contact voltage detection		-	-	-	-	-	Yes
Frequency counter		-	-	-	-	-	Yes
Low pass filter		Yes	Yes	Yes	Yes	-	Yes
Low impedance mode		-	Yes	Yes	Yes	-	-
Hold & Export		-	-	-	-	Yes	Yes

General
Logging Memory		200 points (Unlimited with Keysight Meter Logger software)	10,000 points (Unlimited with Keysight Meter Logger software)	10,000 points (Unlimited with Keysight Meter Logger software)	10,000 points (Unlimited with Keysight Meter Logger software)	10,000 points (Unlimited with Keysight Meter Logger software)	10,000 points (Unlimited with Keysight Meter Logger software)
PC Connectivity		Optional - USB, Bluetooth	Optional - USB, Bluetooth	Optional - USB, Bluetooth	Optional - USB, Bluetooth	Standard- USB, Optional - Bluetooth	Standard- USB, Optional - Bluetooth
Operating temperature		-20 to 55 ⁰C	-20 to 55 ⁰C	-20 to 55 ⁰C	-40 to 55 ⁰C	-20 to 55 ⁰C	-20 to 55 ⁰C
Operating hours		300 hours (4X AAA Alkaline batteries)	300 hours (4 X AAA Alkaline batteries)	60 hours (4X AAA Alkaline batteries)	100 hours (4X AAA Lithium batteries)	800 hours (4X AA Alkaline batteries)	800 hours (4X AA Alkaline batteries)
Water and dust ingress protection		IP 54	IP 54	IP 54	IP 54	IP 67	IP 67
Over-voltage safety protection		CAT III 1000V / CAT IV 600V	CAT III 1000V / CAT IV 600V	CAT III 1000V / CAT IV 600V	CAT III 1000V / CAT IV 600V	CAT III 1000V / CAT IV 600V	CAT III 1000V / CAT IV 600V
Warranty		3-year	3-year	3-year	3-year	3-year	3-year

Note: Refer to datasheet for detailed specifications.