We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Three-piece electrical test kit in plastic case with testers and probe pen

Klein Tools 80077 Voltage Test Kit 3-Piece

SKU CH-BHNN-CXDYN

Three-piece kit tests AC voltage from 12 to 240 VAC, DC voltage from 1.5 V, checks GFCI wiring and detects voltage non-contact

  • FeaturesVoltage Tester Kit, Corded Electric, true
  • Height15 L x 10 W x 3 H inches
  • Width15 L x 10 W x 3 H inches
  • Length15 L x 10 W x 3 H inches
  • Weight0.46 pounds
  • Sports Team1 Piece
  • Tests AC voltage 12 to 240 VAC at four levels
  • Tests DC voltage 1.5 to 24 V at four levels
  • Bright LEDs show voltage type and level
  • GFCI tester detects common wiring faults
  • Non-contact pen finds voltage in cables and outlets

Complete Three-Piece Testing Kit

The Klein Tools 80077 kit combines an electronic AC/DC voltage tester, a GFCI outlet tester and a non-contact voltage pen in one package. Electricians and maintenance technicians receive three complementary instruments for verifying live circuits, receptacle wiring and voltage presence without direct contact.

AC and DC Voltage Coverage

The electronic tester indicates AC voltage from 12 to 240 VAC across four levels aligned with common residential supplies and DC voltage from 1.5 V up to greater than 17 to 24 V across four levels. Bright LEDs show both the polarity and the approximate magnitude so users can confirm whether a circuit is energised and at what level.

GFCI Diagnostics and Non-Contact Detection

The GFCI tester identifies the most common wiring faults in standard and GFCI receptacles and verifies that the ground-fault protective device trips correctly. The non-contact pen detects voltage in cables, cords, breakers, fixtures, switches and non tamper-resistant outlets without metallic contact, adding a quick go/no-go check before hands-on work.

Highlights

  • Tests AC voltage 12 to 240 VAC at four levels
  • Tests DC voltage 1.5 to 24 V at four levels
  • Bright LEDs show voltage type and level
  • GFCI tester detects common wiring faults
  • Non-contact pen finds voltage in cables and outlets

Specifications

BrandaFe Power
FeaturesVoltage Tester Kit, Corded Electric, true
Height15 L x 10 W x 3 H inches
Width15 L x 10 W x 3 H inches
Length15 L x 10 W x 3 H inches
Weight0.46 pounds
Sports Team1 Piece
TypeClamp

Questions about this item

Will the ET40 voltage tester work with my existing 12 V and 24 V DC systems?

Yes, the tester covers DC voltages from 1.5 V up to greater than 17 to 24 V at four levels, so it reads both 12 V and 24 V circuits.

How do I confirm the GFCI tester is functioning correctly after I plug it in?

Press the test button on the GFCI receptacle; the unit will trip if the ground-fault protection is operating properly.

Does the 80077 kit include batteries or a carry case, or must I buy them separately?

The three-piece kit contains the AC/DC voltage tester, GFCI outlet tester and non-contact test pen; batteries and a case are not included.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.