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Extech CT20 Remote and Local Continuity Tester One Person Operation for Wire and Cable Testing

Extech CT20 Remote and Local Continuity Tester One Person Operation for Wire and Cable Testing

Q: Can this device be used to test the continuity of a single conductor wire instead of a conductor pair?

I wondered about that too so I asked my son in law he's an electrician according to him you can't do it remotely but it can be done without the remote option as long as you can get to both ends of the single wire which makes this device useless in most cases because most of the wires I would want to remotely test are single wire

Q: how many feet can be tested at one time ?

Not sure what your asking about how many feet? It is for finding continuous flow in wiring if your not sure which wire goes where. This is a video I used to help me to figure out a 4 way switch setup. http://www.thisoldhouse.com/toh/tv/ask-toh/video/0,,20785338,00.htmlHope it helps.

Q: Hooking tester in panel box is a probl locating grnd and neg. Can you attach rem to grounding bar to test for neg and grounding wire continuity?

You can test everything you want as long as the object that you want to test is de-energized

Q: do the units require any kind of recalibration or servicing to ensure it is still working correctly

No, none that I know of. It works fine and comes with instructions. It saves a lot of time and trouble, especially if you are working alone.

Product ID: 2175252

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Details

Brand
Extech
Power Source
Battery
Style
CT20
Color
green
Item Weight
0.1 Kilograms

📏Tests wire lengths up to 10,000 ft

🔊85dB loud continuity beeper

🔋Battery powered with included 9V battery

Frequently Bought Together

Extech CT20 Remote and Local Continuity Tester

Southwire Tester; Continuity PRO 40040S

Klein Tools 80016 Circuit Breaker Finder Tool Kit with Accessories, 2-Piece Set, Includes Cat. No. ET310 and Cat. No. 69411

Description

🔌 Master your circuits with the CT20—because precision waits for no one.

CLEAR AUDIBLE ALERTS - 85dB beeper ensures you never miss a continuity signal, even in noisy environments.
READY OUT OF THE BOX - Includes remote probe, 9V battery, and carrying case for instant jobsite readiness.
COMPACT LIGHTWEIGHT - Weighs just 3.5 oz and fits comfortably in your toolkit or pocket.
ONE PERSON WIRE WIZARDRY - Identify and label wires across rooms solo—no extra hands needed.
LONG DISTANCE TESTING POWER - Accurately test cables up to 3,000 meters (10,000 ft) with ease.

The Extech CT20 is a compact, battery-powered continuity tester designed for electricians and cable installers. It enables single-person operation to identify and label wires up to 10,000 feet apart, featuring an 85dB beeper for clear continuity alerts. The kit includes a remote probe, 9V battery, and carrying case, making it a ready-to-go solution for efficient wire and cable testing.

Specifications

Brand	Extech
Power Source	Battery Powered
Style	CT20
Color	green
Item Weight	0.1 Kilograms
Item dimensions L x W x H	2.2 x 1.14 x 3.6 inches
Upper Temperature Rating	149 Degrees Fahrenheit
Measurement Type	Ohmmeter
UPC	013161042406 793950000205
Manufacturer	Extech
Global Trade Identification Number	00793950000205
Part Number	CT20
Item Weight	3.52 ounces
Product Dimensions	2.2 x 1.14 x 3.6 inches
Item model number	CT20
Batteries	1 AA batteries required. (included)
Is Discontinued By Manufacturer	No
Size	2
Thickness	1 Inches
Item Package Quantity	1
Number Of Pieces	1
Included Components	Product & Instructions Guide
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Alkaline
Warranty Description	1 year

Have a Question? See What Others Asked

Can this device be used to test the continuity of a single conductor wire instead of a conductor pair?

how many feet can be tested at one time ?

Hooking tester in panel box is a probl locating grnd and neg. Can you attach rem to grounding bar to test for neg and grounding wire continuity?

do the units require any kind of recalibration or servicing to ensure it is still working correctly

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