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Milwaukee 2238-21

  • Milwaukee 2238-21
  • Milwaukee 2238-21 Front View
  • Milwaukee 2238-21 View of Display
  • Milwaukee 2238-21 Side View
  • Milwaukee 2238-21 Thermocouple Input
  • Milwaukee 2238-21 Testing Voltage
  • Milwaukee 2238-21 Using Clamp Meter
  • Milwaukee 2238-21 Testing Temp


Milwaukee 2238-21

M12™ 12 Volt CLAMP-GUN™ Cordless Clamp Meter Kit for HVAC/R

The Milwaukee™ CLAMP-GUN™ M12™ Cordless Clamp Meter for HVAC/R is a heavy duty True-RMS current tester for professional commercial and industrial HVAC/R applications.  This kit comes with one compact lithium-ion battery, a 30 minute charger and carrying case. 

Normally Ships in 6-12 business days

Sale Price: $249.34
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Milwaukee 2238-21 M12™ 12 Volt CLAMP-GUN™ Cordless Clamp Meter Kit for HVAC/R


Product Description

Powered by the Milwaukee M12™ LITHIUM-ION battery, the 2238-21 features an ergonomic pistol grip design which greatly increases comfort and ease-of-use in overhead applications. The unit also provides a wide 1.30" jaw opening to easily handle large conductors, a thin jaw profile for access to tight spaces, a large white on black display, embedded non-contact voltage detection and an embedded extra bright LED Floodlight. The 2238-21 is covered by the Milwaukee 5-Year Warranty.

  • The ergonomic pistol grip is designed to orient the jaws and display making it easier to use and easier to see
  • The 1.30" jaw size is ideal for measuring up to 750 MCM cable
  • The wide current range allows for testing up to 600 amps AC
  • The wide voltage range allows for detecting up to 1000 volts AC/DC
  • The CAT IV 600V / CAT III 1000V allows for greater safety when in use
  • The high contrast, white on black display with backlight for easy reading
  • The LED floodlight illuminates dark work areas
  • The built in voltage detection saves you time
  • Can measure up to 600 microamps DC for flame rectification
  • The dual banana Thermocouple allows for contact temperature measurements

In The Box

In The Box

  • One (1) CLAMP-GUN™ M12™ Clamp Meter for HVAC/R(2238-20)
  • One (1) M12™ LITHIUM-ION Battery Pack
  • One (1) 30-Minute Charger
  • Two (2) Test Leads
  • One (1) Dual Banana Thermocouple
  • One (1) Carrying Case



  • Heating & Air Conditioning Repair
  • Maintenance
  • Electrical


Additional Information

Manufacturer's SKU 2238-21
UPC / ISBN 045242173839
Brand Milwaukee
Additional No
Safety Info No
Shipping Weight 7.0000
Battery Voltage 12 Volts
Tool Length 8.00 Inches
Condition New
Product Weight (lbs.) 5.00 Pounds
Manufacturer's Warranty 5 Years
Return Policy 30 Days
Addl Specs
  • Voltage Range: 1000V AC/DC
  • Safety Category Rating: CAT IV 600V / CAT III 1000V
  • Temperature Range: -40°F to 752°F
  • TRMS: Yes
  • AC Amps: 600
  • uA DC: 600
  • DC Amps: 600
  • Ohms: 600 kOhms
  • Dual Banana Thermocouple Input: Yes
  • Continuity: Yes
  • Capacitance: 0.1uF-4000uF
  • Backlight: Yes
  • Contact Temperature: Yes
  • Hold: Yes
  • Jaw Size: 1.3 Inches
  • Display: High Contrast White on Black
  • Pistol Grip: Yes
  • Non-Contact Voltage: Yes
  • LED Floodlight: Yes
  • Rugged Overmolding: Yes
  • Indication: Visual (for NCVD)
  • Switch Type: Dial
  • Carry Case: Hard Carrying Case
  • Battery: 12V LITHIUM-ION
  • Charger: Yes
  • No of Batteries Included: 1
  • Charge Time: 30 Minutes
Video No

Need more information on the Milwaukee 2238-21?
Call us Toll-Free at 866-597-3850 or email