# ORNO R4-12.21 Symmetrical Electric Strike with Mechanical Lock and Low Power Consumption

**URL:** https://aio.lv/en/product--orno-r4-1221--12469603
**Data updated:** 2026-05-18 09:41 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** ORNO
**Manufacturer code:** R4-12.21
**EAN:** 5905279347052
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 28.49 €
**Prices and availability valid until:** 2026-08-10 23:59
**Price without VAT (21%):** 23.55 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--orno-r4-1221--12469603

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

The ORNO R4-12.21 is a symmetrical electric strike designed for remote door opening. It features a mechanical lock function and reduced power consumption, making it an energy-efficient solution for access control systems. Suitable for standard door frames, this strike ensures reliable operation in residential and commercial security installations.

## Long description

The ORNO R4-12.21 is a high-quality symmetrical electric strike engineered for efficient remote door control. Designed to integrate seamlessly into modern access control systems, this device allows for the secure and reliable unlocking of doors via an electrical signal. It features a built-in mechanical lock function, providing additional flexibility for managing entry points in both residential and commercial environments. With its low power consumption design, it serves as an energy-efficient component for long-term security installations.
Advantages
The primary benefit of this electric strike is its symmetrical construction, which simplifies the installation process and ensures compatibility with a wide range of door frames. The inclusion of a mechanical lock function allows users to manually override the electrical operation when necessary, providing a versatile solution for various security needs. Furthermore, the reduced power consumption helps minimize operational costs and heat generation, ensuring the device remains reliable even during frequent use. Its robust build quality guarantees consistent performance and durability in demanding access control applications.
Suitable for
Residential apartment building entrance doors
Office access control systems
Internal doors in commercial facilities
Integration with intercom and video door phone systems
When it may not be suitable
This electric strike is not intended for use on fire-rated doors or heavy-duty industrial security gates that require specific certifications. It is also not suitable for outdoor environments where the device would be directly exposed to harsh weather conditions without additional protective housing.
Key specifications
Type: Symmetrical electric strike
Mechanical lock function: Yes
Power consumption: Low energy design
Compatibility: Standard door frames
Operation: Remote electrical release
How to use
Installation should be performed by a qualified professional to ensure proper alignment with the door latch. The strike is mounted into the door frame, replacing the standard strike plate. Once installed, it is wired to an access control power supply or an intercom system. When the electrical signal is triggered, the internal mechanism releases the latch, allowing the door to be opened. The mechanical lock feature can be engaged to keep the strike in an unlocked state manually when required.
What to consider before purchase
Verify the dimensions of your existing door frame to ensure compatibility with the symmetrical design.
Check the voltage requirements of your current access control system.
Ensure the door frame material is suitable for mounting an electric strike.
Usage recommendations
Regularly inspect the strike for debris and ensure the latch mechanism moves freely to maintain optimal performance. Periodically test the mechanical lock function to ensure it operates smoothly.

## FAQ

### How much does the ORNO R4-12.21 Symmetrical Electric Strike cost, and is it available for purchase?

The price is 28.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 30.07.2026 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/12469603/68772406_large.webp