# Twisted pair cable tester EFB Elektronik 39919.1V2 RJ-11 RJ-12 RJ-45

**URL:** https://aio.lv/en/product--efb-elektronik-399191v2--10470381
**Data updated:** 2025-12-30 08:42 (EET)
**Category:** Cable testers
**Manufacturer:** EFB Elektronik
**Manufacturer code:** 39919.1V2
**EAN:** 4049759293772
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 24.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 20.24 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--efb-elektronik-399191v2--10470381

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The EFB Elektronik 39919.1V2 is a twisted pair cable tester designed for testing RJ-11, RJ-12, and RJ-45 connectors. It features a compact design in black, red, and white colors, making it easy to handle and use. This tester is essential for network installation and troubleshooting, ensuring proper connectivity and performance of twisted pair cables.

## Long description

The EFB Elektronik 39919.1V2 is a compact twisted-pair cable tester for RJ-11, RJ-12 and RJ-45 connectors. It is part of a network tool set that also includes a crimping tool for RJ11/RJ12/RJ45, an LSA insertion tool, and a cable cutter/stripper. The tester helps verify proper wiring and connectivity of telephone and Ethernet cables; battery (9V block) is not included.
Advantages
The tester offers a small, lightweight design for easy handling on-site and supports common connector types (RJ-11, RJ-12, RJ-45). It enables quick verification of cable continuity and pin assignment in twisted pair lines and complements the included crimping and insertion tools for efficient installation and troubleshooting.
Suitable for
Testing telephone lines with RJ-11/RJ-12 connectors
Verifying Ethernet cables with RJ-45 connectors (Cat5/Cat5e/Cat6 wiring)
Field installation and maintenance of small LANs
Troubleshooting connectivity and wiring faults
Key specifications
Model: EFB Elektronik 39919.1V2
Supported connectors: RJ-11, RJ-12, RJ-45
Color: black, red and white
Included in set: LAN tester (this model), crimping tool RJ11/RJ12/RJ45, LSA insertion tool, cable cutter/stripper
Power: 9V battery (block) — not included
Category: Cable tester
Brand: EFB Elektronik
MPN: 39919.1V2
EAN: 4049759293772
How to use
Connect the appropriate connector (RJ-11, RJ-12 or RJ-45) from the tester to the cable under test and, if applicable, attach the remote unit to the far end of the cable. Insert a 9V battery into the tester according to the polarity markings. Power on the unit and observe the indicator LEDs or sequence to determine continuity, short circuits or miswiring. Follow standard safety procedures and ensure cables are de-energized before testing.
Usage recommendations
Use the tester together with the supplied crimping and LSA insertion tools for end-to-end verification after terminations. Store the unit in a dry environment and replace the 9V battery when indicator output becomes weak. For reliable Ethernet testing, ensure connectors and cable pairs are properly terminated before performing the test.

## Specifications

| Feature | Value |
|---|---|
| Product colour | Black, Red, White |
| Manual | Yes |
| Batteries included | No |
| Built-in display | Yes |
| Product type | Twisted pair cable tester |
| Supported connectors | RJ-11, RJ-12, RJ-45 |

## FAQ

### How much does the Twisted pair cable tester EFB Elektronik 39919.1V2 cost, and is it available for purchase?

The price is 24.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 642 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 06.07.2026 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. All transactions are 100% secure and encrypted.

### 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 EFB Elektronik 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 EFB Elektronik 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

### Where can I download the instructions for Twisted pair cable tester EFB Elektronik 39919.1V2?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/10470381/64387438_large.webp