Klein Tools Digital AC/DC Volt...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$114.53
$52.10
Klein Tools ET250 AC/DC Voltage/Continuity Tester

Klein Tools Digital AC/DC Voltage and Continuity Tester with CAT IV 600V Rating and IP53 Protection

(No reviews yet) Write a Review

Model: ET250
Selected Model is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$114.53
$52.10
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Klein Tools Digital AC/DC Voltage and Continuity Tester with CAT IV 600V Rating and IP53 Protection

Professional-grade electrical testing with advanced safety features and rugged construction

The Klein Tools Digital AC/DC Voltage and Continuity Tester delivers reliable electrical testing performance with CAT IV 600V safety rating and IP53 dust and water resistance. This professional-grade tester features automatic voltage or continuity selection with 2 to 600V AC/DC range, built-in test lead storage, and integrated flashlight for versatile field applications. The solid-state design with backlit LCD display and 9.8 ft. drop protection ensures dependable operation in demanding electrical work environments.

Professional Features & Benefits

  • CAT IV 600V Safety Rating: Provides maximum protection for electrical work in high-energy environments with modern solid-state design for enhanced safety.
  • 2 to 600V AC/DC Range: Covers comprehensive voltage testing requirements from low-voltage circuits to standard electrical systems with +/- (2% + 2V) accuracy.
  • IP53 Dust and Water Resistance: Protects against environmental conditions with ingress protection rating for reliable field performance.
  • 9.8 ft. Drop Protection: Ensures durability in demanding work conditions with rugged thermoplastic construction designed for professional use.
  • Automatic Operation: Automatically selects voltage or continuity testing and powers on when measurement is attempted for streamlined operation.
  • Built-in Test Lead Storage: Features integrated test lead holders on back of meter for organized tool management and convenience.
  • Integrated Flashlight: Provides illumination for work in low-light conditions with backlit LCD display for enhanced visibility.

Technical Specifications

  • Accessories: 69401
  • Accuracy: +/- (2% + 2V)
  • Batteries: 3 x AAA
  • Control Type: Digital
  • Department: Electrical
  • Display: Digital LCD
  • Drop Protection: 9.8' (3 m)
  • Frequency: 45 to 400 Hz
  • Ingress Protection: IP53 (except test lead jacks)
  • Integral Lead Storage: Yes
  • Item Depth: 2.3300 in
  • Item Height: 6.0500 in
  • Item Weight: 0.3100 lbs
  • Item Width: 1.6400 in
  • Material: Thermoplastic; Electronics
  • Overall Height: 1.64" (4.2 cm)
  • Overall Length: 6.06" (15.4 cm)
  • Overall Width: 2.31" (5.9 cm)
  • Pollution Degree: 2
  • Product Details: Digital Voltage and Continuity Tester
  • Product Group: Test & Measurement
  • Product Subgroup: Electrical Testers
  • Product Type: Digital Voltage and Continuity Tester
  • Product Voltage: 2 to 600V AC/DC
  • Replacement Parts: 69410
  • Standard: CAT IV 600V, CE
  • Tests Continuity: Yes
  • Weight: 6.00 oz (170.0 g)

Professional Applications

  • Residential Electrical Testing and Troubleshooting
  • Commercial Facility Maintenance
  • Industrial Equipment Testing
  • GFCI Circuit Verification
  • Electrical Panel and Circuit Analysis
  • Field Service and Repair Operations
  • Electrical Safety Inspections

Why Choose Klein Tools Quality?

Klein Tools delivers professional-grade electrical testing equipment with CAT IV 600V safety certification and CE compliance. The rugged thermoplastic construction with IP53 protection rating ensures reliable performance in demanding electrical work environments, backed by Klein Tools' commitment to quality and durability in professional electrical tools.

Manufacturer Resources

Spec Sheet

Product Specs

Accessories:
69401
Accuracy:
+/- (2% + 2V)
Batteries:
3 x AAA
Control Type:
Digital
Display:
Digital LCD
Drop Protection:
9.8' (3 m)
Frequency:
45 to 400 Hz
Ingress Protection:
IP53 (except test lead jacks)
Integral Lead Storage:
Yes
Item Depth:
2.3300 in
Item Height:
6.0500 in
Item Weight:
0.3100 lbs
Item Width:
1.6400 in
Overall Height:
1.64" (4.2 cm)
Overall Length:
6.06" (15.4 cm)
Overall Width:
2.31" (5.9 cm)
Pollution Degree:
2
Replacement Parts:
69410
Standards:
CAT IV 600V, CE
Tests Continuity:
Yes
Department:
Electrical
Product Group:
Test & Measurement
Product Subgroup:
Voltage Testers
Product Type:
Contact Voltage Tester
Product Voltage:
2 to 600V AC/DC
Product Details:
Digital Voltage and Continuity Tester
Product Material:
Thermoplastic; Electronics
Product Weight:
6.00 oz (170.0 g)
Product Height:
6.05 in
Product Depth:
2.33 in
Product Width:
1.64 in

Klein Tools ET250 – Frequently Asked Questions

1) Is the Klein ET250 tester rated CAT IV 600V for work on a service panel?
The ET250 carries a CAT IV 600V rating and CE marking, so it is built for the high-energy side of an installation, service entrance and panel work included. Pollution Degree 2 is the environment it is rated for, which covers normal indoor and enclosed panel conditions. Testing range is 2 to 600V AC/DC, so anything above 600V is outside what this tester is rated to touch.
2) Will the Klein ET250 read low voltage control and doorbell circuits, or does it only see line voltage?
Range starts at 2V, so 24V control wiring, thermostat and doorbell circuits read fine on the ET250, as does 12V and 24V DC. Accuracy is +/- (2% + 2V), which means at the very bottom of the range the tolerance is a large share of the reading, so it tells you voltage is present and roughly how much rather than giving you a precision measurement on a 24V circuit. Frequency range is 45 to 400 Hz, which covers 60 Hz line power and 400 Hz equipment.
3) Should I buy a digital voltage tester like the Klein ET250 or a clamp meter?
Two different jobs. The ET250 measures voltage AC and DC from 2 to 600V and checks continuity, and it does both without you turning a dial, it selects the mode and powers itself on when you take a measurement. What it does not do is current. If you need to know how many amps a circuit or motor is pulling, you want a clamp meter instead. For confirming a circuit is dead, tracing a conductor, verifying a switch leg or ringing out a run of wire, the ET250 is the faster tool because there is no function selection to get wrong.
4) Can the Klein ET250 be used outdoors or in a damp crawlspace?
IP53 covers the ET250 against dust and against water spray, so light rain, jobsite dust and a damp basement are within what it is sealed for. The rating excludes the test lead jacks, so it is not sealed at the lead openings and it is not an immersion rating. Do not drop it in standing water and do not count on it in driving rain with the leads out.
5) Will the Klein ET250 fit in a shirt pocket or a pouch on my tool belt?
The ET250 measures 6.06 x 2.31 x 1.64 inches (15.4 x 5.9 x 4.2 cm) and weighs 6 oz (170 g), so it drops into a shirt pocket or a meter pouch without adding noticeable weight. The leads stow on the meter itself, there are lead holders built into the back, so you are not carrying a loose coil of test leads alongside it.
6) Can I get replacement test leads for the Klein ET250?
Replacement leads for the ET250 are part number 69410, and accessory 69401 is listed for it as well. Worth knowing before you buy, because leads are the part that fails first on a field tester and the ET250 is not a throwaway when they do.
7) Does the Klein ET250 check continuity, or do I need a separate meter to ring out a wire?
Continuity testing is built into the ET250, and it switches to it automatically, no dial to set. So one tool confirms a circuit is dead and then rings out the conductor, checks a fuse or verifies a switch. For a maintenance tech carrying one tester, that is the whole job on a single instrument.
8) How tough is the Klein ET250 if it gets dropped off a ladder?
Drop protection is rated to 9.8 feet (3 m), so a fall from a step ladder or off a panel ledge is within spec. The housing is thermoplastic over the electronics, and there are no moving selector parts to break since the tester picks voltage or continuity on its own.
9) What batteries does the Klein ET250 take and do I need to stock them for a service van?
Three AAA cells run the ET250. Standard alkalines off any shelf, so a van or a facility crib does not need a specialty battery on the shelf for it.
10) Can I use the Klein ET250 in a dark panel room or attic without holding a flashlight?
The ET250 has a flashlight built in and a backlit LCD, so you can light the terminal you are probing and still read the display. That matters for panel and attic work where you would otherwise be holding a light in your teeth with two leads in your hands.
How fast can I get the Klein Tools ET250 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools ET250 come with a warranty?
Absolutely. The Klein Tools ET250 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools ET250?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Klein Tools ET250 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!