Klein Tools 4-in-1 Digital Circuit Breaker Finder | ET350

The Klein Tools ET350 is a professional-grade 4-in-1 circuit breaker finder that combines digital breaker identification, outlet diagnostics, non-contact voltage detection, and LED illumination in one compact tool. Its innovative two-step Learn and Locate system quickly identifies target breakers without power interruption, while built-in GFCI testing and receptacle analysis verify wiring integrity. The integrated LED work light illuminates dark panels, and the dockable design keeps components organized. UL and CSA certified, the ET350 delivers fast, accurate electrical diagnostics for contractors and technicians tackling residential and commercial projects.

Features
Versatile 4-in-1 Architecture: Integrates digital breaker identification, receptacle wiring diagnostics, non-contact AC voltage detection (NCVT), and a high-efficiency LED work light.
Single-Scan Learn & Locate Modes: Calibrates panel sensitivity on the first pass (Learn Mode) and accurately isolates the specific breaker on the second pass (Locate Mode) to eliminate false trips.
Comprehensive Receptacle Diagnostics: Checks 120V standard outlet wiring integrity, verifies line voltage, detects wiring faults, and measures GFCI trip response time.
Non-Contact AC Voltage (NCVT) Sensor: Scans cables, cords, switches, and distribution panels with dynamic audible and visual signal strength feedback.
Integrated LED Illumination: Built-in receiver work light delivers targeted illumination for dark utility rooms, basements, and unlit panel boards.
Interlocking Storage Dock: Stores the transmitter directly into the receiver housing for compact, organized transport.

Specifications
Tester Type: Electronic Tester / Circuit Analyzer
Application: Circuit Breaker Finding, Receptacle Diagnostics, Non-Contact Voltage Testing
Voltage Compatibility: 120V AC Electrical Systems
Display Type: Digital LCD Display
Housing Material: Durable PC & PC-ABS Enclosure with Internal Solid-State Electronics
Power Supply: 4 x AAA Batteries
Safety Standards: Conforms to UL STD 1436; Certified to CSA STD C22.2 #160
Included Components: Digital Receiver, Plug-in Transmitter, 4 x AAA Alkaline Batteries, Protective Storage Case
Product Dimensions (L x W x H): 11.75 x 6.19 x 3.25 inches
Shipping Dimensions (L x W x H): 11.75 x 6.19 x 3.25 inches (Standard manufacturer packaging envelope)
Weight: 1.23 lbs