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Klein RT310 AFCI /GFCI Outlet Tester

Manufacturer: Klein Tool | Catalog # RT310 | North Coast Part # 1724609

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RT310 is an electrical tester that tests the wiring condition at an electrical outlet, and inspects and checks AFCI and GFCI devices. It is designed for use with North American 120V electrical outlets. It can detect and identify common wiring faults. Includes 3 x 1.5V AAA alkaline batteries.

Technical Information

RT310 is an Electrical Outlet Tester That Tests For Wiring Faults in Electrical Outlets, and Tests AFCI and GFCI Devices
Battery Type
Blade Dimensions
7.4 in L x 2.3 in W x 1.3 in H
ABS Plastic
Number of Rows
AFCI/GFCI Electrical Battery Operated Outlet Tester
120 Volt

Manufacturer Information

Family Brand Name
Klein Tools

General Product Info

Product UPC
8.5 oz


18.53 Inch
1.28 Inch
7.4 Inch
Overall Length
7.4 in
2.370 in
  • The tester is intended for indoor use only. Tester is designed for use with 120V AC electrical systems. DO NOT connect to higher voltage electrical supplies.
  • Read, understand, and follow all warnings and instructions before operating testers
  • Before each use, verify tester operation by testing on a known live and correctly wired receptacle and circuit
  • This tester only detects common wiring problems. DO NOT attempt electrical testing on an incorrectly wired outlet
  • Always consult a qualified electrician to resolve wiring problems.
  • DO NOT use if the tester appears damaged in any way
  • Electrical plug is on a 10-Inch (254 mm) flexible electrical cord to access electrical outlets in difficult to reach locations
  • The RT310 features a patent pending AFCI test method that is unique to Klein Tools
  • Built to withstand a 6.6-Foot (2 m) drop
  • Low battery indicator and easily accessible battery compartment; Uses 3 x 1.5V AAA alkaline batteries (included)
  • Measurement category III is applicable to test and measuring circuits connected to the distribution part of the buildings low-voltage MAINS installation
  • Tester delivers clear visual indication of the wiring condition at the electrical outlet
  • Test AFCI devices by simulating arc fault conditions
  • Capable of detecting a dual-open wiring fault with simultaneous open neutral and open ground wires (patent pending technology)
  • GFCI Tester detects the most common wiring faults in standard, AFCI, and GFCI electrical outlets
  • Test GFCI devices by simulating ground fault conditions
  • CATIII 135V safety rating
  • Powers off automatically after approximately 2 minutes of non-use to conserve battery life
  • Designed to test North American-style grounded electrical outlets in 120V AC circuits (incorporates a three-pin plug)