# Video balun electro base QH-202A passive video transmitter up to 300 m over twisted pair

**URL:** https://aio.lv/en/product--electro-base-qh-202a--4426088
**Data updated:** 2026-02-12 14:08 (EET)
**Category:** CCTV Accessories
**Manufacturer:** electro base
**Manufacturer code:** QH-202A
**EAN:** 3100000063658
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.34 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 2.76 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--electro-base-qh-202a--4426088

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 19.06.2026 | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 4.99 EUR |

## Summary description

Passive video balun electro base QH-202A provides transmission of analog video signals up to 300 meters over twisted-pair cable. Designed for CCTV installations, it converts and balances composite video for reliable long-distance connection between camera and DVR without power supply. Suitable for extending camera reach and simplifying cabling in surveillance systems.

## Long description

Passive video balun electro base QH-202A provides transmission of analog composite video signals over a single twisted-pair cable for distances up to 300 meters. Designed for CCTV installations, it converts unbalanced composite video to a balanced signal suitable for long-distance runs, enabling connection between cameras and DVRs without additional power. The compact, passive design reduces wiring complexity and helps extend camera placement options where coaxial cable routing is impractical.
Advantages
The QH-202A is passive, requiring no external power, which simplifies installation and lowers ongoing maintenance. It supports transmission up to 300 m over twisted pair, offering a cost-effective alternative to long coax runs. The balun’s conversion and signal balancing reduce interference susceptibility on long cable runs and allow the use of common twisted-pair cabling already present in many buildings. Its small footprint and straightforward wiring make it compatible with typical CCTV cameras and DVR inputs.
Suitable for
Extending analog CCTV camera signal over long distances where coaxial cable is impractical
Retrofit surveillance installations using existing twisted-pair infrastructure
Small- and medium-sized security projects requiring simple, passive video transmission
Locations where power to an inline transmitter is unavailable or undesirable
Key specifications
Transmission type: passive analog composite video balun
Maximum transmission distance: up to 300 meters over twisted-pair cable
Cable type: compatible with standard twisted-pair (UTP/STP) cabling
Interface: BNC (camera/DVR side) to twisted-pair terminal or RJ45-style connections depending on mounting
Power: passive operation, no external power required
Form factor: compact inline/board-mounted module suitable for camera or junction-box installation
How to use
Connect the composite video output of the CCTV camera to the BNC input on the QH-202A and terminate the opposite end at the matching video balun connected to the DVR input. Run a single twisted-pair cable between the two baluns, ensuring correct polarity of the pair to maintain signal phase. No power connection is required for the passive module. Verify video integrity at the DVR and, if necessary, check pair continuity and grounding to minimize noise. For best results, use high-quality twisted-pair cable and avoid running video pairs alongside heavy power lines.
Usage recommendations
Use the QH-202A with shielded or unshielded twisted-pair cable of category 5 or higher when possible, keep cable runs away from strong electromagnetic sources, and install matching passive baluns at both camera and recorder ends. For runs approaching the 300 m limit, test the signal quality before finalizing installation; if degradation occurs, consider using active transmission equipment or additional signal conditioning.

## FAQ

### How much does the Video balun electro base QH-202A cost, and is it available for purchase?

The price is 3.34 € (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 19.06.2026 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 electro base 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 electro base 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/4426088/13222453_large.webp