Swivel Clamp Meter allows easy viewing of measurements.

Press Release Summary:

Featuring 180° rotating head, Model ACD-21SW provides unobstructed view of 3½ digital LCD in hard-to-reach places. Unit measures AC current up to 400 ACA, AC/DC voltage up to 600 V, resistance, capacitance, temperature, and continuity with measurement rate of 2 times/sec. Accommodating conductors up to 1.18 in., meter includes auto power off, data hold, and low battery indication. Model ACD-21SW operates for 150 hr with carbon-zinc battery and up to 300 hr with alkaline battery.

Original Press Release:

Model: ACD-21SW Swivel Clamp Meter

New patented rotating head clamp design allows easy viewing of the measurements in tight or inconvenient to reach places. Simply rotate the body of meter to get an unobstructed view of the LCD display. Reach set of features and CAT III 600V safety reading for use in electrical and HVAC applications.

o 180 degree rotating head for the perfect display viewing

o Advanced VoltTect non-contact voltage detection

o Slim jaw design with one hand operation

o Measures AC Current up to 400 ACA, AC/DC Voltage up to 600V, Resistance and Capacitance

o Temperature measurement

o Audible continuity

o Auto and manual ranging respectively for quick checks and precise measurements

o Auto power off

o Data hold

o Accommodates conductors up to 1.18" (30mm) in diameter

o Test leads, battery (installed), Users Manual, Carrying Case and type-K thermocouple are included with the product


Battery Life: 150 hours typical with carbon-zinc. 300 hours typical with alkaline.

Size: 306 × 135 × 30mm (12 × 5.3 × 1.2 in).

Weight: Approx. 157g (1.26lb) including battery.

Safety: CAT III 600 V, N10140, CE

Instruction Manual: Yes

Detailed Specs: Yes


Display: 3¾ digit liquid crystal display (LCD) with a maximum reading of 3999.

Polarity: Automatic, positive implied, negative polarity indication.

Overrange: (OL) or (-OL) is displayed.

Zero: Automatic.

Low battery indication: The " " is displayed when the battery voltage drops below the operating level.

Auto power off: Approx. 10 minutes.

Measurement rate: 2 times per second, nominal.

Operating Environment: 0°C to 50°C / 32°F to 122°F at <70% relativehumidity.

Storage Temperature: 20°C to 60° / -4°F to 140°F, 0 to 80% R.H. with battery removed from meter.

Accuracy: Stated accuracy at 74°F ±8°F, <75% relative humidity.

Temperature Coefficient: 0.1 × (specified accuracy) per °F, (32°F to 66°F, 82°F to 122°F).

Altitude: 6561.7 Feet (2000m).

Jaw opening capability: 30mm (1.18 in) conductor.

Power: 1.5 volt battery x2, R03/SIZE AAA.

DC Volts Ranges: 400mV, 4V, 40V, 400V, 600V

AC Volts (50Hz - 500Hz) Ranges: 4V, 40V, 400V, 600V

AC Current (50Hz - 60Hz) Ranges: 40A , 400A

Resistance Ranges: 400W, 4kW, 40kW, 400kW, 4MW, 40MW

Capacitance Ranges: 4uF , 40uF , 400uF , 4mF

Temperature Range: -30°F ~ 400°F, -35°C ~ 400°

Continuity Range: 400W
Non-Contact Voltage Indicator: Sense voltage 70V to 600VAC (50Hz ~ 60Hz) beeper chirps and big bright red LED comes on, works when meter dial is on any ranges.

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