Side
Works with
- Shielded or unshielded twisted-pair data cable: CAT3, CAT5E, CAT6, CAT6A, CAT7
- Coaxial cable: RG59, RG6/6Q with F-connector
- Voice cabling with RJ11/RJ12 terminations
Features
Backlit LCD shows cable length, wiremap, cable ID and test results, with a 50-hour active battery life and 2 m drop protection
In the box
Tester, self-storing remote, (5) LanMap RJ45 locator remotes, (5) CoaxMap F-connector locator remotes, (1) coax F-adapter, manual, (1) 9V battery
Is it for you?
A cable tester kit that tests voice (RJ11/12), data (RJ45) and video (coax F-connector) cables, measures cable length up to 2000 feet, and maps multiple cable runs with included locator remotes.
Choose it if these matter
- Tests voice (RJ11/12), data (RJ45) and video (coax F-connector) cables and detects open, short and miswire faults
- Hub blink mode helps identify port location on a hub or switch, and a voltage warning and shield detection flag live or shielded lines
Skip it if these rule it out
- Cable tracing with the tone generator requires the Probe-PRO tracing probe (Cat. No. VDV500-123), which is sold separately
- Length measurement accuracy is +/- 5%, so it is a verification tool rather than a certification tester
- Klein Tools' own page links no per-model Amazon listing for this kit, so buying it online means searching for the exact VDV501-851 model number
- The self-storing remote design means the kit tests one run at a time per remote pair; the 18-remote limit covers larger mapping jobs only with expansion kits
Good for: Home office · Homelab · Wired backhaul · Budget
Which version should you buy?
Selected package: VDV501-851 Ethernet Cable Tester Kit (tester, self-storing remote, 5 LanMap and 5 CoaxMap locator remotes, coax F-adapter).
Bundles and accessories
Ethernet Cable Tester Kit with Scout Pro 3 Tester, Remotes and AdapterModel: VDV501-851
Contents and availability
The full kit: tester, self-storing remote, five LanMap RJ45 and five CoaxMap F-connector locator remotes, coax F-adapter, manual and 9V battery.
Mapping and verifying multiple cable runs across a home or small office.
Scout Pro 3 Tester with Test + Map Remote KitModel: VDV501-853
Contents and availability
Tester with the self-storing remote plus Test + Map remotes in a different bundle; fewer locator remotes than the VDV501-851 kit.
Buyers who do not need the full set of five LanMap and five CoaxMap locator remotes.
Scout Pro 3 Tester with Locator Remote KitModel: VDV501-852
Contents and availability
Tester with locator remotes in a smaller bundle than the VDV501-851 kit.
Basic wiremap and length testing with occasional cable-run identification.
Related models and generations
Scout Pro Max Network Cable Tester with Remote Set Model: VDV501-770
The step-up Scout Pro Max tester, a different model above the Scout Pro 3 line.
Buyers who need the features of the higher Scout Pro Max model.
Watch out
- VDV501-851, VDV501-852 and VDV501-853 all use the same Scout Pro 3 tester but ship in different remote bundles; check the kit contents before ordering.
- The Scout Pro Max (VDV501-770) is a different, higher tester model, not a Scout Pro 3 bundle.
- Cable tracing needs the Probe-PRO tracing probe (VDV500-123), which is sold separately and is not part of this kit.
Compare with similar models
| Specification |  This oneKlein Tools VDV501-851 |  Back-UPS 600VA Battery Backup UPS |  Cable Matters 160012-BLK-1FT |
|---|---|---|---|
| Works with | Shielded or unshielded twisted-pair data cable: CAT3, CAT5E, CAT6, CAT6A, CAT7, Coaxial cable: RG59, RG6/6Q with F-connector, Voice cabling with RJ11/RJ12 terminations | Routers, modems, NAS drives, computers, gaming consoles and other home electronics | Any device with a standard RJ45 Ethernet port: PCs, servers, routers, switches, NAS, VoIP phones and PoE devices, Shielded keystone jacks, patch panels and couplers for a fully shielded channel |
| Best for | Home office, Homelab, Wired backhaul, Budget | Backups, Home office, Homelab, Budget | Homelab, Home office, Wired backhaul |
| Open | View | View |
Full specifications (25)
- Type
- Twisted Pair, DATA, Voice, LAN, and Coaxial
- Application
- Cable Testing
- Special features
- Measures cable length; backlit LCD; hub blink
- Cable type
- DATA: shielded or unshielded, CAT3, CAT5E, CAT6, CAT6A, CAT7; COAXIAL: RG59, RG6/6Q
- Cable length measurement
- Up to 2000 ft (610 m)
- Faults detected
- Open, Short, Miswire
- Test & measure types
- Ethernet / Data and Coaxial
- Connection & adapter types
- RJ11, RJ12, RJ45, Coax F
- Length measurement accuracy
- +/- 5% (ft) or +/- 5% (m)
- Display
- Backlit LCD
- Test-n-Map ID remotes
- (1) self-storing
- Location ID
- (5) RJ45 data and (5) F-coax connector locator remotes
- Supported remotes
- 18
- Tone generator
- Multiple style (5); requires tracing probe Cat. No. VDV500-123, sold separately
- Batteries
- 9V alkaline (included)
- Battery life
- Active: 50 hr
- Drop protection
- 2 m
- Overall length
- 7 in (17.8 cm)
- Overall height
- 3 in (7.6 cm)
- Overall width
- 1.25 in (3.2 cm)
- Weight
- 19.2 oz (544 g)
- Material
- Plastic and metal
- Standard
- CE
- UPC
- 092644692260
- Included
- Tester, self-storing remote, (5) LanMap RJ45 locator remotes, (5) CoaxMap F-connector locator remotes, (1) coax F-adapter, manual, (1) 9V battery
Downloads & support
Setup: No drivers or software needed: the tester runs from its included 9V battery and shows results on its own backlit LCD.
Links go to the manufacturer’s official pages, so you always get the latest, genuine files.
Sources: Klein Tools specifications · kleintools.com · Manual / documentation · data.kleintools.com. Photos: Klein Tools · media.kleintools.io. Specifications checked November 9, 2026. Spotted an error? Tell us.