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Overview

Quickly pinpoint the correct breaker for an outlet or fixture with the Klein Tools ET310. The two-piece transmitter/receiver system provides clear audible and visual confirmation, plus an integrated GFCI outlet tester to check wiring and test GFCI devices on 90–120V AC circuits.

Klein Tools ET310 Digital Circuit Breaker Finder & GFCI Outlet Tester

Model: ET310
Web Code: 19693214
Sold and shipped by | 3.6 seller rating (130 reviews)

Available for deliveryAvailable online only

Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.

Seller Return Policy

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Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

What's included:

  • Transmitter
  • Receiver
  • User Manual
  • 9V Battery (for Receiver)

Locate the correct circuit breaker fast and confidently with the Klein Tools ET310 Digital Circuit Breaker Finder with Integrated GFCI Outlet Tester. Plug the transmitter into a North American grounded outlet (or connect to a fixture) and scan the panel with the receiver—clear audible beeps and visual indicators help identify the correct breaker. The transmitter also functions as a GFCI outlet tester to verify wiring condition and test GFCI devices. Built for jobsite use with CAT II 120V safety rating, 2 m (6.6 ft.) drop protection, IP40 dust resistance, low-battery indication, and an auto power-off feature (receiver) to help conserve battery life. Uses 1 x 9V alkaline battery in the receiver (included). Dimensions (transmitter docked): 27.8 cm (L) x 5.5 cm (H) x 3.5 cm (W). Weight: 204 g.

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping may be available on orders over a minimum amount (before taxes, fees, and promo codes). Shipping charges may vary based on item size and your shipping address. Want a shipping charge estimate? Simply add an item to your cart, then access the cart and enter your postal code in the shipping estimate section.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
See our return policy to find specific return information for this product and steps on how to return by mail.