will it trace a single wire

I just tried it because I wasn't sure, you won't be able to trace the wire in the wall but you will be able to identify a single conductor when you touch the probe to the other end of it.

I need to trace a 12V wire through an RV to determine where it is shorted; is this device appropriate for this purpose?

If you can get to the wire or know where it is running it will work to trace where you are losing power RV walls are pretty thin

Can I use this kit to find a Cat-5 cable behind sheetrock, 2-3 inches at most ? If not, which product does this ?

Not sure. You might be able to if you can connect the tone generator to one end of the Cat5 cable. The signal would be very faint, at best, as this device is made for the probe to actually touch the wire. Not familiar with a tone generator that would work this way, but the Home Depot has a device that will allow you to see through walls to see what's behind it. Sound like that would be more what you need.

Will this test camera wires with rj45's at each end to confirm proper connections

If you just need to test for continuity then you can put an rj45 jack on each end and tone one end and test the other you can see if you have continuity

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Klein Tools VDV500-820 Wire Tracer Tone Generator and Probe Kit Continuity Tester for Ethernet, Telephone, Speaker, Coax, Video, and Data Cables, RJ45, RJ11, RJ12

Klein Tools VDV500-820 Wire Tracer Tone Generator and Probe Kit Continuity Tester for Ethernet, Telephone, Speaker, Coax, Video, and Data Cables, RJ45, RJ11, RJ12

Product ID: 159799472

Details

Brand
KLEIN TOOLS
Color
Beige
Item Weight
1.28 Pounds
Power Source
Battery
Style
Analog

🎧3.5mm noise-reducing headphone jack

📡5 distinct tone cadences

🔌RJ11/RJ45 plug compatibility

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€ 176.37

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Description

🔧 Trace with confidence, connect with precision — never miss a wire again!

PRECISION WIRE TRACING - Professional-grade analog tone generator ensures pinpoint accuracy on open-ended, non-energized cables.
SECURE CONNECTION TECH - Rugged Angled Bed of Nails clips guarantee stable wire attachment—no slip, no guesswork.
VERSATILE SIGNAL RANGE - Transmit clear tone signals over 1,000 feet with 5 unique cadences for unmatched tracing reliability.
SMART CONTINUITY POLARITY - Integrated LED indicators provide instant, foolproof continuity and polarity testing results.
NOISE RESISTANT AUDIO FEEDBACK - 3.5mm headphone jack lets you isolate tone signals even in the busiest, noisiest job sites.

The Klein Tools VDV500-820 Wire Tracer Kit is a professional-grade analog tone generator and probe designed for efficient tracing and testing of Ethernet, telephone, speaker, coax, video, and data cables. Featuring 5 distinct tone cadences, secure ABN clips, RJ11/RJ45 compatibility, continuity and polarity testing with LED indicators, and a noise-reducing headphone jack, this kit empowers professionals to quickly and accurately identify wiring issues up to 1,000 feet away. Durable, portable, and backed by a 1-year warranty, it’s a must-have for any serious network or cable technician.

Specifications

ASIN	B07VYN98QV
Best Sellers Rank	#3,213 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Network & Cable Testers
Brand Name	KLEIN TOOLS
Color	Beige
Customer Reviews	4.6 4.6 out of 5 stars (4,384)
Global Trade Identification Number	00092644692192
Included Components	Tone and Probe PRO Kit
Item Dimensions	3 x 7 x 3 inches
Item Type Name	Wire Tracer Kits
Item Weight	1.28 Pounds
Manufacturer	Klein Tools
Measurement Type	Ohmmeter
Minimum Operating Voltage	9 Volts
Model	VDV500-820
Part Number	VDV500-820
Power Source	Battery Powered
Style Name	Analog
UPC	092644692192
Unit Count	1.0 Count
Upper Temperature Rating	122 Degrees Fahrenheit
Warranty Description	1 Year Manufacturer

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