# Loopback adapter DeLOCK RS-232/422/485 DB25 female

**URL:** https://aio.lv/en/product--delock-66831--4323868
**Data updated:** 2025-12-29 16:01 (EET)
**Category:** Cable Adapters & Converters
**Manufacturer:** DELOCK
**Manufacturer code:** 66831
**EAN:** 4043619668311
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 11.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--delock-66831--4323868

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

The DeLOCK RS-232/422/485 Loopback adapter features a DB25 female connector, designed for reliable communication testing. With dimensions of 12.6 mm width, 53.3 mm depth, and 11.8 mm height, it is compact and easy to handle. The adapter is packaged in a polybag and is made in Taiwan, ensuring quality and durability. Ideal for professionals needing to test serial connections.

## Long description

The DeLOCK Loopback adapter for RS-232/422/485 with a DB25 female connector is designed to facilitate testing and troubleshooting of serial communication lines. Compact and portable, it enables simple connection of signal lines for loopback tests and basic error/data analysis. The adapter is supplied in a polybag and manufactured in Taiwan.
Advantages
The adapter provides a straightforward means to perform loopback tests on RS-232, RS-422 and RS-485 interfaces using a DB25 female connector. Its small dimensions make it easy to carry and position during testing. The product's construction and packaging support repeated use in professional or lab environments.
Suitable for
 Testing and troubleshooting RS-232 serial ports
 Checking RS-422 and RS-485 differential communication lines
 Loopback diagnostics during hardware or software development
 Maintenance and repair of serial communication equipment
Key specifications
 Connector: DB25 female
 Supported interfaces: RS-232, RS-422, RS-485
 Dimensions (W × D × H): 12.6 mm × 53.3 mm × 11.8 mm
 Packaging: polybag
 Origin: Taiwan
 Colour: Black, Silver
 Brand: DELOCK, MPN: 66831, EAN: 4043619668311
How to use
Connect the DB25 female loopback adapter to the corresponding DB25 serial port on the device under test. Use the adapter to close the required transmit and receive signal paths according to the loopback or wiring diagram for RS-232, RS-422 or RS-485. Run your diagnostic, terminal or test software to send data; verify that received data matches transmitted data to confirm line integrity and proper signal routing.
Usage recommendations
Ensure the device is powered and configured for the correct serial mode (RS-232, RS-422 or RS-485) before testing. Refer to the equipment wiring and signal reference to select the correct pins for loopback. Store the adapter in a dry environment when not in use to maintain connector condition.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 11.8 mm |
| Width | 12.6 mm |
| Depth | 53.3 mm |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Features

| Feature | Value |
|---|---|
| Product colour | Black, Silver |
| Country of origin | Taiwan |
| Connector gender | Female |

### Other features

| Feature | Value |
|---|---|
| Material | Metal, Plastic |
| Connector(s) | DB25 |

### Packaging data

| Feature | Value |
|---|---|
| Package type | Polybag |

## FAQ

### How much does the Loopback adapter DeLOCK RS-232/422/485 DB25 female cost, and is it available for purchase?

The price is 14.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 165 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 30.06.2026 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 DELOCK 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 DELOCK 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Loopback adapter DeLOCK RS-232/422/485 DB25 female?

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/4323868/64274420_large.webp