# Electromechanical Two-Tone Doorbell ORNO BELIS OR-DP-BD-157 with Built-in Transformer 230V→8V, White

**URL:** https://aio.lv/en/product--orno-or-dp-bd-157--12055896
**Data updated:** 2026-05-06 17:35 (EEST)
**Category:** Control Systems
**Manufacturer:** ORNO
**Manufacturer code:** OR-DP-BD-157
**EAN:** 5908254810268
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Electromechanical two-tone doorbell ORNO BELIS OR-DP-BD-157 operates from mains 230V and includes a built-in transformer to provide 8V output for the chime. The unit delivers two-note signalling, mechanical actuation for reliable acoustic output, and a white housing suitable for residential or small commercial entrances. Practical for replacing or installing a wired bell where low-voltage chime drive is required.

## Long description

The Electromechanical Two-Tone Doorbell ORNO BELIS OR-DP-BD-157 with Built-in Transformer 230V→8V, White is a wired chime designed for mains-powered entrances that require a low-voltage acoustic drive. The unit integrates a step-down transformer to convert 230 V mains to an 8 V output for the bell mechanism, producing a reliable two-note mechanical chime. The white enclosure is intended for residential or small commercial use where a discreet, hard-wired door signalling device is needed.
Advantages
This electromechanical doorbell provides consistent acoustic signalling through mechanical actuation, ensuring audible two-tone notification without electronic sound synthesis. The built-in transformer eliminates the need for a separate external power converter and simplifies installation to standard mains wiring. The compact white housing offers compatibility with common interiors and durable construction suitable for long-term wired installation.
Suitable for
Private homes and apartments with mains doorbell wiring
Small offices, reception areas and retail entrances
Replacement of existing wired chimes where an 8 V drive is required
Installations that prioritise simple, reliable mechanical sound generation over electronic tones
Key specifications
Power supply: designed to be connected to 230 V AC mains
Built-in step-down transformer providing an 8 V output for the chime mechanism
Sound type: two-tone mechanical chime
Mounting: wall-mountable housing suitable for indoor entrance areas
Housing colour: white
How to use
Connect the doorbell unit to the building’s 230 V AC supply following local electrical regulations and ensure the power is turned off before wiring. The internal transformer provides the necessary 8 V output to the chime, so connect the chime terminals to the door push-button circuit as specified in the product manual. Once installed and powered, pressing the door push-button activates the mechanical two-note chime. Routine inspection of mounting and wiring is recommended to maintain consistent operation.
Usage recommendations
For safe installation, use a qualified electrician to perform mains connections and to verify compatibility with existing door push-buttons and wiring. Avoid exposure to direct moisture and install the unit in a sheltered indoor location. If loudness adjustment or different timbre is required, choose a location with suitable acoustics or consider complementary devices designed for larger spaces.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. 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 ORNO 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 ORNO 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/12055896/67541917_large.webp