Top Rated Circuit Testers | CPO Power Tools

Back

Shop by Category
Back
- Power Tools
  Back
  - Combo Kits
    
    Back
  - Drills
    
    Back
    
    Drill Drivers
    
    Hammer Drills
    
    Impact Drivers
    
    Right Angle Drills
    
    Screw Guns
    
    Electric Screwdrivers
    
    View All
  - Saws
    
    Back
    
    Band Saws
    
    Circular Saws
    
    Concrete Saws
    
    Hand Saws
    
    Jig Saws
    
    Masonry and Tile Saws
    
    Chop Saws
    
    Miter Saws
    
    Panel Saws
    
    Reciprocating Saws
    
    Scroll Saws
    
    Table Saws
    
    Tile Saws
    
    View All
  - Nailers & Staplers
    
    Back
  - Grinders
    
    Back
    
    Angle Grinders
    
    Bench Grinders
    
    Cut Off Grinders
    
    Die Grinders
    
    Surfacing Ginders
    
    View All
  - Impact Wrenches
    
    Back
  - Sanders & Polishers
    
    Back
  - Demo and Breaker Hammers
    
    Back
  - Cordless Ratchets
    
    Back
  - Routers and Trimmers
    
    Back
  - Multi Tools
    
    Back
  - Specialty Tools
    
    Back
  - View All
- Batteries & Chargers
  Back
  - Batteries
    
    Back
  - Chargers
    
    Back
  - Battery and Charger Starter Kits
    
    Back
  - View All
- Power Tool Accessories
  Back
  - Bases and Stands
    
    Back
  - Blades
    
    Back
    
    Band Saw Blades
    
    Circular Saw Blades
    
    Diamond Abrasive Blades
    
    Hand Saw Blades
    
    Jigsaw Blades
    
    Miter Saw Blades
    
    Planer Blades
    
    Reciprocating Saw Blades
    
    Scroll Saw Blades
    
    Table Saw Blades
    
    View All
  - Drill Accessories
    
    Back
  - Fasteners
    
    Back
    
    Collated Screws
    
    Nails
    
    Staples
    
    View All
  - Fence and Guide Rails
    
    Back
  - Grinding, Sanding, Polishing Accessories
    
    Back
  - Saw Accessories
    
    Back
  - Router Accessories
    
    Back
  - Oscillating Tool Accessories
    
    Back
  - View All
- Outdoor Power Tools & Equipment
  Back
  - Outdoor Power Combo Kits
    
    Back
  - Multi Function Tools
    
    Back
  - Leaf Blowers
    
    Back
  - Lawn Mowers
    
    Back
  - Outdoor Hand Tools
    
    Back
  - Trimmers
    
    Back
    
    Hedge Trimmers
    
    String Trimmers
    
    Edgers
    
    View All
  - Chainsaws
    
    Back
  - Log Splitters
    
    Back
  - Pressure Washers and Accessories
    
    Back
  - Pole Saws
    
    Back
  - Chipper Shredders
    
    Back
  - Snow Blowers
    
    Back
  - View All
- Air Tools and Equipment
  Back
  - Air Tools
    
    Back
  - Air Compressors
    
    Back
  - Pneumatic Nailers and Staplers
    
    Back
  - Inflators
    
    Back
  - View All
- Tool Storage
  Back
  - Storage Systems
    
    Back
  - Jobsite Storage
    
    Back
  - Tool Carts
    
    Back
  - Cases and Bags
    
    Back
  - Tool Belts
    
    Back
  - View All
- Clothing and Gear
  Back
  - Shirts
    
    Back
  - Hoodies and Sweatshirts
    
    Back
  - Coolers & Tumblers
    
    Back
  - Cooling Gear
    
    Back
  - Hats
    
    Back
  - Heated Gear
    
    Back
  - Jackets
    
    Back
  - Footwear
    
    Back
  - View All
- Lighting
  Back
  - Flashlights
    
    Back
  - Work Lights
    
    Back
  - View All
- Hand Tools
  Back
  - Clamps and Vises
    
    Back
  - Chisels Files and Punches
    
    Back
  - Cutting Tools
    
    Back
  - Dispensers
    
    Back
  - Drywall Tools
    
    Back
  - Hammers
    
    Back
    
    Claw Hammers
    
    Sledge Hammers
    
    View All
  - Measuring Tools
    
    Back
  - Pliers
    
    Back
  - Screwdrivers
    
    Back
  - Sockets and Ratchets
    
    Back
  - Wrenches
    
    Back
    
    Box Wrenches
    
    Combination Wrenches
    
    Crowfoot Wrenches
    
    Flare Nut Wrenches
    
    Pipe Wrenches
    
    Ratcheting Wrench Sets
    
    Strap Wrenches
    
    Torque Wrenches
    
    View All
  - View All
- Woodworking Tools
  Back
  - Drill Press
    
    Back
  - Mortisers
    
    Back
  - Joiners
    
    Back
  - Jointers
    
    Back
  - Routers and Trimmers
    
    Back
  - Shapers
    
    Back
  - Power Feeders
    
    Back
  - Wood Lathes
    
    Back
  - Wood Planers
    
    Back
  - CNC Machines
    
    Back
  - Dust Management
    
    Back
  - View All
- Generators
  Back
  - Portable Generators
    
    Back
  - Inverter Generators
    
    Back
  - Transfer Switches
    
    Back
  - Generator Accessories
    
    Back
  - View All
- Automotive
  Back
  - Liquid Transfer Equipment
    
    Back
  - Truck Boxes
    
    Back
  - Jacks
    
    Back
    
    Bottle Jacks
    
    Hydraulic Jacks
    
    Jack Stands
    
    Service Jacks
    
    Transmission Jacks
    
    View All
  - Auto Maintenance
    
    Back
  - Shop Presses
    
    Back
  - Air Conditioning Equipment
    
    Back
  - Air Management
    
    Back
  - Auto Body Repair
    
    Back
  - Battery and Electrical Testers
    
    Back
  - Brake Tire Suspension
    
    Back
  - Diagnostics Testers
    
    Back
  - Engine Tools
    
    Back
  - View All
- Concrete Tools
  Back
  - Concrete Saws
    
    Back
  - Demolition Hammers
    
    Back
  - Rotary Hammers
    
    Back
  - Concrete Dust Collection
    
    Back
  - View All
- Metalworking Tools
  Back
  - Metal Lathes
    
    Back
  - Magnetic Drill Presses
    
    Back
  - Milling Machines
    
    Back
  - Nibblers & Shears
    
    Back
  - Metal Forming
    
    Back
  - View All
- Material Handling
  Back
  - Hoists
    
    Back
  - Hand Trucks
    
    Back
  - View All
- Vacuums
  Back
  - Wet / Dry Vacuums
    
    Back
  - Backpack Vacuums
    
    Back
  - Handheld Vacuums
    
    Back
  - Vacuum Accessories
    
    Back
  - View All
- Safety Equipment
  Back
  - Emergency Response
    
    Back
  - Protective Head Gear
    
    Back
  - Masks
    
    Back
  - Respirators
    
    Back
  - Ear Protection
    
    Back
  - Eye Protection
    
    Back
  - Fall Protection
    
    Back
  - Work Gloves
    
    Back
  - Kneepads
    
    Back
  - Bib Overalls
    
    Back
  - Thermometers
    
    Back
  - View All
- Plumbing and Drain Cleaning
  Back
  - Copper and Pvc Cutters
    
    Back
  - Drain Cleaning
    
    Back
  - Threading Tools
    
    Back
  - View All
- Heaters
  Back
  - Job Site Heaters
    
    Back
  - Portable Heaters
    
    Back
  - Pellet Stoves
    
    Back
  - Wall Heaters
    
    Back
  - View All
- View All
Shop By Brand
- Dewalt
- Makita
- Bosch
- Metabo HPT
- Sawstop
- Senco
- JET Woodworking
- Fein Tools
- Honda
- Klein Tools
- Detail K2
- Ridgid
- BLACK+DECKER
- Porter Cable
- Metabo
- Briggs & Stratton
- Husqvarna
- Craftsman
- View All Brands
Deal Zone
Shop By Trade
Blog

Filters

View:

Filter

Sort By:

Filters: 1 Results

CIRCUIT TESTERS | Klein Tools 20-Piece Cordless Advanced Circuit Tracer Kit with (10) AA Batteries - ET450

Compare

Klein Tools

20-Piece Cordless Advanced Circuit Tracer Kit with (10) AA Batteries

ET450

Compare

$299⁹⁹

sale item

New Year New Savings! Save $25 off $150! Code: 2026

Free shipping on all orders over $149

This item ships from manufacturer; get it in 2-5 days

We couldn’t find matching products

Select 2 to 4 Items to Compare

Select 2 to 4 Items to Compare

CPO is America's Leading
Online Power Tool Retailer

Fast, Reliable
Shipping

Zero-Hassle
Returns

Premium
Brands

Customer
First Service