# Network Cable Tester EFB Elektronik 39938.1

**URL:** https://aio.lv/en/product--efb-elektronik-399381--1042567
**Data updated:** 2026-01-13 15:33 (EET)
**Category:** Cable testers
**Manufacturer:** EFB Elektronik
**Manufacturer code:** 39938.1
**EAN:** 4049759028954
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 13.49 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 11.15 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--efb-elektronik-399381--1042567

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.99 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

The EFB Elektronik 39938.1 network cable tester is designed for testing twisted pair cables. It features an easy-to-read LED display for quick diagnostics and supports various cable types. Compact and lightweight, it is ideal for both professional and personal use, ensuring reliable connectivity and troubleshooting capabilities.

## Long description

The EFB Elektronik 39938.1 network cable tester is a compact device for testing twisted pair network cables. It provides clear LED feedback for line continuity and wiring faults, enabling fast identification of open circuits, shorts and miswires. Designed for use with common ethernet cable types, this tester is lightweight and portable for field diagnostics and routine verification of cable installations.
Advantages
The tester offers an easy-to-read LED display that simplifies interpretation of test results and reduces troubleshooting time. Its compact form factor and low weight make it convenient to carry between work sites or store in a technician's toolkit. The unit supports multiple twisted pair cable configurations and provides reliable basic diagnostics for continuity and wiring order without complex setup.
Suitable for
Installation verification of Ethernet twisted pair cables (Cat5e/Cat6)
On-site troubleshooting of network connectivity issues
Routine maintenance checks in small and medium-sized networks
Home network cable testing and DIY cabling projects
Key specifications
Supported cable type: twisted pair network cables (UTP/STP)
Display: LED indicator array for individual pair status
Functions: continuity check, pair identification, detection of open/short/miswire conditions
Power: battery-powered for portable operation
Weight and size: compact and lightweight handheld design
How to use
Connect one end of the network cable to the main unit and the other end to the remote terminator, or insert both ends into the appropriate ports if the tester is single-ended. Power the unit using the specified batteries and select the appropriate test mode if multiple modes are available. Observe the LED indicators to determine continuity and correct pair wiring; a sequential LED pattern typically indicates correct pair order while missing or simultaneous lights indicate faults. After testing, remove the cable and power off the device to preserve battery life.
Usage recommendations
Use the tester on de‑energized cables only; avoid testing live telephone or power lines. Store the unit in a dry environment and replace batteries when LED brightness declines. For full certification or performance guarantees (for example length measurement or advanced diagnostics), use specialised certification tools as required by project specifications.

## Specifications

| Feature | Value |
|---|---|
| Product colour | Grey |
| Built-in display | No |
| Product type | Twisted pair cable tester |
| Supported connectors | RJ-11, RJ-45 |

## FAQ

### How much does the Network Cable Tester EFB Elektronik 39938.1 cost, and is it available for purchase?

The price is 13.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 407 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 20.07.2026 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: Cash payment, 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

## Image

https://aio.lv/img/cache/product/1042567/53688061_large.webp