# Loopback adapter DeLOCK 66827 DB9 female RS-232/422/485

**URL:** https://aio.lv/en/product--delock-66827--4323870
**Data updated:** 2025-12-29 16:01 (EET)
**Category:** Cable Adapters & Converters
**Manufacturer:** DELOCK
**Manufacturer code:** 66827
**EAN:** 4043619668274
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 12.80 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--delock-66827--4323870

## 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 DB9 female connector, allowing for easy testing and troubleshooting of serial communication. Its silver color adds a sleek look, while its compatibility with multiple serial standards ensures versatility in various applications. Ideal for engineers and technicians, this adapter simplifies the process of verifying data transmission and reception.

## Long description

The DeLOCK Loopback adapter 66827 is a DB9 female serial connector designed for testing and troubleshooting RS-232, RS-422 and RS-485 communication lines. It enables loopback of transmit and receive signals to allow error and data analysis during development, maintenance and diagnostics. The adapter is finished in silver and is compact for convenient handling in laboratory and field environments.
Advantages
The adapter supports multiple serial standards (RS-232/422/485) using a DB9 female connector, making it suitable for diverse device interfaces. Its simple passive design requires no power or software, so it can be quickly deployed for loopback tests and line verification. The compact silver housing provides easy handling and portability for engineers and technicians.
Suitable for
Testing and troubleshooting serial ports using DB9 connectors
Loopback and signal verification for RS-232, RS-422 and RS-485 lines
Device diagnostics, maintenance and firmware or data transmission checks
Key specifications
Connector: DB9 female (Serial RS-232/422/485)
Supported standards: RS-232, RS-422, RS-485
Colour: Silver
Manufacturer: DELOCK
MPN: 66827
EAN: 4043619668274
How to use
Connect the adapter to the device's DB9 serial port to route transmit pins back to the receive pins, creating a loopback condition. Use appropriate serial terminal software or test equipment to send and receive data; verify that transmitted data is received correctly to confirm port functionality. For RS-422/RS-485 systems, ensure proper wiring and termination on the bus before testing.
Usage recommendations
Use the adapter only for diagnostic and testing purposes on compatible DB9 serial interfaces. Ensure the device under test is powered and configured to the correct serial standard and baud rate. Avoid using the adapter on active multi-drop RS-485 networks without isolating the node to prevent interference with other devices.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 11.8 mm |
| Width | 12.6 mm |
| Depth | 31 mm |

### Features

| Feature | Value |
|---|---|
| Product colour | Silver |
| Connector 1 | Serial RS-232/422/485 DB9 |
| Connector 1 gender | Female |

### Packaging data

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

## FAQ

### How much does the Loopback adapter DeLOCK 66827 cost, and is it available for purchase?

The price is 15.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 105 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: connector 1, 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 66827?

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/4323870/64274425_large.webp