Klein Tools Electrical Tester ET270 600V Multimeter Receptacle Kit (Auto Ranging TRMS 4000 Count LCD Breaker Finder GFCI Safety Outlet Diagnostic)

Locate Distribution Breakers and Track Circuit Interrupter Trip Durations Instantly With Dedicated Digital Diagnostic Signal Mapping

The Klein Tools ET270 is an automatically ranging digital multi-tester and integrated outlet analyzer engineered for verifying residential or commercial networks up to 600V AC/DC. This professional test instrument incorporates an innovative digital breaker mapping mode that identifies the exact control switch matching an assigned branch terminal junction. Operating within a certified CAT III 600V safety envelope, the device provides a 4000-count backlit LCD screen, a 40MΩ resistance matrix, and a ground-fault interrupter tracking cord to execute complete load performance diagnostics and battery health checks.

Best Used For:

• Breaker Panel Mapping: Utilizing the diagnostic transmitter function to map specific active wall receptacle ports straight back to individual service panel slots.
• Interrupter Performance Logs: Simulating active faults to capture the exact mechanical trip time of residential ground-fault circuit protection mechanisms.
• DC Conductor Testing: Verifying secondary power drops, low-voltage accessories, and the chemical health of local 1.5V or 9V field battery blocks.

Key Performance & Safety Features

• Integrated Breaker Mapping: Specialized identification sub-mode tracks local plug lines directly to upstream switches to eliminate panel tracing delays.
• Dual Purpose Architecture: Merges a comprehensive 4000-count digital multimeter system frame with a high-stakes three-prong wall outlet loop checker.
• Automated Range Selection: Auto-ranging microcircuit selectors shift matching parameters to active line properties with a manual push override button.
• Five-Point Structural Auditing: Included plug interface maps structural errors like missing grounds, reverse polarities, open hot legs, and open neutrals.
• Double Insulated Frame: Class 2 engineered ABS polymer shock outer shell passes concrete deck drop verification tests up to 6.6 feet.

What's Included

• ET270 Digital Multimeter / GFCI Tester
• Set of Right-Angle Test Leads
• Receptacle Test Cord
• Padded Storage Pouch
• Two AAA Batteries
• Instruction Manual

Technical Specifications

Pro-Tip: When running path maps in old commercial panels using FIND mode, keep your lead interface connection steady for three full seconds; this allows the tester logic arrays to stabilize signal tracking over high-interference lines.