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Free Gift Card on All Orders Over $100 See Details

Free Gift Card Details

$100 Order

$10
gift card

$250 Order

$25
gift card

$500 Order

$50
gift card

$1000 Order

$100
gift card
  • The promotion will be automatically applied on the Shopping Cart page.
  • To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
  • Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
  • E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
  • Free e-gift cards expire 11/01/26.
  • Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
  • Valid online and in participating retail stores.
  • Limited-time offer. Subject to change without notice.
  1. Northern Tool
  2.   /   Top Tools
  3.   /   Best Voltage Testers

Best Voltage Testers

  • Klein Tools Non-Contact Volt Tester with Thermometer, Model# NCVT-4IR
    3.3 out of 5 stars. 13 reviews
    3 of 13 reviewers received a sample product or took part in a promotion

    Klein Tools Non-Contact Volt Tester with Thermometer, Model# NCVT-4IR

    Item # 5902151

    • Product Weight: 0.1120 lb
    • Dimensions L x W x H (in.): 6.26 x 1.08 x 1.21 in
    $39.99

    • Shipping: 

      Available now

    • Store Pickup: 

      Not Available
  • Klein Tools, GFCI Receptacle Tester with LCD, Model# RT250

    Klein Tools, GFCI Receptacle Tester with LCD, Model# RT250

    Item # 5901094

    • Display Type: LCD
    • Battery Size: AAA
    • Battery Included: Yes
    $21.97

    • Shipping: 

      Backordered - Expected to ship Fri, Aug 14

    • Store Pickup: 

      Not available - online only
  • Klein Tools, GFCI Outlet Tester, Model# RT210

    Klein Tools, GFCI Outlet Tester, Model# RT210

    Item # 5901828

    • Max. AC Volts: 125
    • Frequency: 50/60 Hz
    • Max. Temperature: 140 °F
    $13.98

    • Shipping: 

      Factory shipped

    • Store Pickup: 

      Not available - online only
  • Milwaukee Voltage Detector, Model# 2200-20

    Milwaukee Voltage Detector, Model# 2200-20

    Item # 19807

    • Circuit or Voltage Tester: Voltage Tester
    • Battery Type: AA
    • Charger Included: No
    $19.99

    • Shipping: 

      Available now

    • Store Pickup: 

      Not Available
  • Gardner Bender 4-Way Live Circuit Tester, Model# GET-3213

    Gardner Bender 4-Way Live Circuit Tester, Model# GET-3213

    Item # 966822

    • Circuit or Voltage Tester: Circuit Tester
    $16.99

    • Shipping: 

      Available now

    • Store Pickup: 

      Not Available

Best Voltage Testers As Voted By Our Customers

Gardner Bender Circuit Alert Non-Contact Voltage Tester

Our voltage testers provide reliable solutions for electricians, contractors, and DIY enthusiasts alike. Our lineup includes a variety of models, including basic pen-style testers to advanced digital testers. Our voltage testers are engineered for accuracy, durability, and safety, with all the features you’re looking for. We’ve gathered up our top-rated voltage testers to make the choice easy.