Klein Tools GFCI Receptacle Te...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$84.00
$38.63

Klein Tools GFCI Receptacle Tester with LCD Display 135V AC Auto-Hold Backlit Screen

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Model: RT250
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$84.00
$38.63
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Klein Tools GFCI Receptacle Tester with LCD Display

Professional-Grade Electrical Testing Equipment with Advanced Fault Detection

The Klein Tools GFCI Receptacle Tester with LCD Display delivers professional-grade electrical testing performance for GFCI outlet verification and fault detection. This ABS construction testing instrument features patent-pending open neutral open ground detection technology designed for electricians, electrical contractors, and maintenance professionals, providing the reliable performance and industry-leading safety standards that electrical tradesmen demand from America's most trusted electrical tool manufacturer.

Professional Features & Benefits

Advanced LCD Display Technology

  • Large Backlit LCD Screen - Clear voltage readout and wiring condition indication with enhanced visibility in low-light electrical panels and confined spaces
  • GFCI Trip Time Display - Shows precise time required to trip GFCI device for comprehensive safety verification and compliance testing
  • Bright LED Visual Indicators - Green and red LEDs provide instant visual confirmation of outlet status and wiring conditions
  • Auto-Hold Function - Convenient feature maintains readings for hard-to-reach outlets and awkward testing positions

Professional Safety & Durability

  • CAT II 135V Safety Rating - Meets rigorous electrical safety standards for professional use in residential and light commercial applications
  • 6.6-Foot Drop Protection - Rugged ABS construction withstands jobsite impacts and daily professional use
  • Patent-Pending Fault Detection - Advanced technology identifies open neutral open ground wiring faults that standard testers cannot detect

Technical Specifications

Dimensions: 4.5 inches length x 2.0 inches width x 1.1 inches height, Weight: 4.8 oz, Voltage Rating: 135V AC, Safety Standard: CAT II 135V, Drop Protection: 6.6 feet, Power: 2 x AAA alkaline batteries, Material: ABS and electrical components, Display: Large backlit LCD with LED indicators, Application: 3-wire North American 120V electrical outlets only

Installation & Usage

  1. Verify outlet power is ON and insert tester into 3-wire 120V receptacle ensuring proper plug engagement
  2. Observe LCD display for voltage reading and LED indicators for immediate wiring condition assessment
  3. Press GFCI test button to verify ground fault protection and monitor trip time display
  4. Use Auto-Hold function for difficult-to-reach outlets by pressing hold button before testing
  5. Record GFCI trip time from LCD display for safety compliance documentation
  6. Remove tester and document any detected wiring faults for professional electrical correction

Professional Applications

Ideal for:

  • Residential Electrical Installation - New construction outlet testing, GFCI verification, and electrical safety inspections
  • Commercial Electrical Maintenance - Routine GFCI testing, outlet troubleshooting, and electrical system verification
  • Electrical Contractor Services - Service calls, electrical repairs, and safety compliance testing
  • Property Management - Preventive maintenance, tenant safety verification, and electrical system monitoring
  • Industrial Maintenance - Facility electrical testing, safety compliance, and equipment protection verification
  • Electrical Troubleshooting - Fault identification, wiring problem diagnosis, and electrical system analysis
  • Safety Inspections - Code compliance verification, electrical safety audits, and OSHA compliance testing
  • Educational Training - Electrical apprentice training, safety demonstration, and electrical theory instruction

LCD Display Technology Advantage

Klein Tools advanced LCD display technology provides superior electrical testing capabilities with precise voltage readings, GFCI trip time measurement, and patent-pending fault detection that identifies wiring problems other testers miss. The backlit display ensures clear visibility in electrical panels, basements, and confined spaces where electrical professionals work daily.

Why Choose Klein Tools Quality?

Klein Tools has maintained its legacy of electrical excellence since 1857, delivering professional-grade testing equipment that meets the demanding safety standards electrical professionals require. Our commitment to rigorous testing protocols, innovative electrical solutions, and trusted reliability makes Klein Tools the preferred choice for electricians, electrical contractors, and maintenance professionals who depend on accurate electrical testing for safety and compliance.



KLN-RT250 - spec sheet

Manufacturer Resources

Product Specs

Afci:
No
Application:
Detects and Identifies Common Wiring Problems in GFCI Receptacles
Batteries:
2 x AAA
Depth:
4.5300 in
Drop Protection:
6.6' (2 m)
Gfci:
Yes, Including Time to Trip Device
Included:
Tester; 2 x 1.5V AAA Alkaline Batteries; Manual
Overall Height:
1.1" ( 2.8 cm)
Overall Length:
4.5" (11.4 cm)
Overall Width:
2" (5.1 cm)
Standard:
CAT II 135V Safety Rating
Product Type:
GFCI Receptacle Tester
Department:
Electrical
Product Group:
Test & Measurement
Product Subgroup:
Electrical Testers
Product Voltage:
135V AC
Product Details:
GFCI Receptacle Tester
Product Height:
2.0000 in
Product Material:
ABS and Electrical Components
Product Category:
Standard GFCI Testers
Product Weight:
4.8 oz (136 g)
Product Width:
1.1600 in

Klein Tools RT250 – Frequently Asked Questions

How fast can I get the Klein Tools RT250 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 RT250 come with a warranty?
Absolutely. The Klein Tools RT250 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 RT250?
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 RT250 from ZenSupply?
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