# UTP/STP Cable Tester Klein Tools VDV501-851 with BNC, RJ11/12, RJ45 and LCD (9V Alkaline)

**URL:** https://aio.lv/en/product--klein-tools-vdv501-851e--12394513
**Data updated:** 2026-04-26 16:18 (EEST)
**Category:** Cable testers
**Manufacturer:** klein tools
**Manufacturer code:** VDV501-851E
**EAN:** 092644583834
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 168.49 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 139.25 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--klein-tools-vdv501-851e--12394513

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Klein Tools VDV501-851 is a handheld UTP/STP cable tester designed for verifying continuity and wiring of network and telecom cables. It supports BNC, RJ-11, RJ-12 and RJ-45 connectors and displays results on an LCD. Powered by a 9 V alkaline battery, the tester is suitable for installation, troubleshooting and maintenance of structured cabling.

## Long description

The Klein Tools VDV501-851 is a handheld UTP/STP cable tester designed to verify continuity and wiring of network and telecom cables. It supports common connector types including BNC, RJ-11, RJ-12 and RJ-45 and shows test results on a built-in LCD. Powered by a 9 V alkaline battery, the tester is intended for installation, troubleshooting and routine maintenance of structured cabling.
Advantages
The tester combines broad connector compatibility and a clear LCD to quickly identify wiring faults, open or shorted pairs and continuity issues. Its compact handheld design and battery power make it convenient for fieldwork and site visits, while support for both UTP and STP cables allows use across typical Ethernet and telecom installations.
Suitable for
Verifying wiring and continuity of Ethernet (UTP/STP) cabling
Testing telephone and low-voltage telecom lines using RJ-11/RJ-12
Checking coaxial connections via BNC for signal continuity
On-site installation, troubleshooting and maintenance of structured cabling
When it may not be suitable
This tester is focused on basic continuity, wiring verification and pair mapping and does not perform advanced signal measurements such as cable length with time-domain reflectometry (TDR), insertion loss, return loss or certification-level testing. For projects that require certification to industry standards or detailed performance metrics, a specialized certifier or TDR instrument is more appropriate.
Key specifications
Supported cable types: UTP and STP
Connector support: BNC, RJ-11, RJ-12, RJ-45
Display: built-in LCD
Power: 9 V alkaline battery
Form factor: handheld, portable
How to use
Connect one end of the cable to the tester’s main unit and the other end to the remote terminator or corresponding connector. Power the unit with a 9 V alkaline battery, select the appropriate test mode if applicable, and run the test. Read the wiring and continuity results on the LCD to identify open pairs, shorts or miswiring. Use the remote unit for testing installed runs where both ends are not co-located.
What to consider before purchase
Whether you need only basic continuity and wiring checks or require certification-level measurements
Required connector types (BNC, RJ-11/RJ-12, RJ-45) for your installations
Battery-powered operation and availability of 9 V alkaline cells for field use
Portability and handheld form factor for on-site work
Usage recommendations
For routine installation and troubleshooting of Ethernet and telephone cabling, use the Klein Tools VDV501-851 to quickly verify pair continuity and wiring order. Replace the 9 V battery before extended jobs, keep connectors clean, and test both ends with the remote unit to confirm results on installed cabling runs.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.5 kg |
| Battery technology | Alkaline |
| Number of batteries supported | 1 |
| Cable length | 610 m |
| Height | 178 mm |
| Width | 76 mm |
| Depth | 32 mm |
| Backlight display | Yes |
| Battery voltage | 9 V |
| Built-in display | Yes |
| Display type | LCD |
| Product type | UTP/STP cable tester |
| Supported connectors | BNC, RJ-11, RJ-12, RJ-45 |

## FAQ

### How much does the Klein Tools VDV501-851 UTP/STP Cable Tester cost, and is it available for purchase?

The price is 168.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Klein Tools VDV501-851 UTP/STP Cable Tester be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All klein tools products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized klein tools service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12394513/68549698_large.webp