# Mechanical timer switch ORNO OR-PRE-427 mini — programmable daily on/off timer

**URL:** https://aio.lv/en/product--orno-or-pre-427--12070795
**Data updated:** 2026-03-12 21:49 (EET)
**Category:** Smart Plugs
**Manufacturer:** ORNO
**Manufacturer code:** OR-PRE-427
**EAN:** 5902560323061
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.49 €
**Prices and availability valid until:** 2026-08-02 23:59
**Price without VAT (21%):** 7.84 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--orno-or-pre-427--12070795

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Mechanical mini timer switch ORNO OR-PRE-427 designed for daily on/off programming. Compact mechanical timer enables repeating 24-hour switching schedules, suitable for lamps, heaters, appliances and simple automation tasks. Manual override and clear dial make setting and operation straightforward for home or small-business use.

## Long description

The ORNO OR-PRE-427 mini mechanical timer switch is a compact daily on/off timer designed for simple, repeatable 24-hour switching schedules. The device allows users to program multiple on and off events within a single day using a clear dial and mechanical segments. It features a manual override for temporary control without changing the programmed schedule, making it suitable for controlling lamps, small heaters, household appliances and basic automation tasks in homes or small businesses.
Advantages
The mechanical construction provides reliable, electricity-free timing between switching events and a straightforward user interface that does not require digital menus. Its compact size saves space in installation locations and the clear marked dial simplifies programming. Manual override enables immediate on/off control while preserving the set daily schedule. The device is designed for repeated daily operation and stable performance for basic timed control needs.
Suitable for
Controlling indoor lamps and lighting circuits on a daily schedule
Switching small electric heaters or fan heaters for limited periods
Automating simple appliances such as coffee makers or radios
Basic office or shop lighting and energy management
Simple repeated daily automation tasks where a 24-hour mechanical timer is sufficient
Key specifications
Type: mechanical 24-hour timer with daily repeat function
Control: on/off switching with mechanical pins or segments on dial
Dial: clear marked 24-hour face for intuitive programming
Manual override: on/off switch to temporarily bypass programmed schedule
Form factor: compact mini design suitable for constrained installation spaces
Intended use: indoor applications for lighting, heating and simple appliances
How to use
Set the current time on the 24-hour dial, then push the mechanical segments at the times when the circuit should be on and leave segments released when it should be off. Use the manual override switch to turn the load on or off temporarily without altering the programmed segments. Ensure the device is installed following local electrical regulations and that the connected load does not exceed the timer's switching capacity. For daily changes, adjust the segments on the dial to reflect new on/off intervals.
Usage recommendations
Install the timer in a dry indoor location and secure electrical connections with power disconnected. Verify the connected device’s power rating is within the timer’s supported load. Regularly check mechanical segments and the dial for correct positioning to maintain accurate daily schedules.

## FAQ

### How much does the Mechanical timer ORNO OR-PRE-427 cost, and is it available for purchase?

The price is 9.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 21 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 23.07.2026 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: 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 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/12070795/67555700_large.webp