# Buzzer unit PATLITE LR4-BW

**URL:** https://aio.lv/en/product--patlite-lr4-bw--3152069
**Data updated:** 2026-01-13 17:39 (EET)
**Category:** Electronics Accessories
**Manufacturer:** Patlite
**Manufacturer code:** LR4-BW
**EAN:** 4938766016194
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 40.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 33.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--patlite-lr4-bw--3152069

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The PATLITE LR4-BW is a white buzzer unit designed for DC power supply with an output voltage of 24V. It features a compact diameter of 4 cm and operates effectively in temperatures ranging from -20 to 50 °C and humidity levels of 0 to 90%. Ideal for various applications, this buzzer ensures reliable performance and compatibility with PATLITE products.

## Long description

The PATLITE LR4-BW is a compact white buzzer unit engineered for 24V DC systems. With a small 4 cm diameter, it provides audible signaling in environments with temperatures from -20 to 50 °C and relative humidity between 0 and 90%. The unit is designed for integration with compatible PATLITE signal devices and control panels, offering a straightforward solution for alert and notification needs where a dedicated audible indicator is required.
Advantages
The LR4-BW offers a compact footprint that simplifies installation in confined spaces and panels. Its 24V DC design ensures compatibility with common industrial and automation power supplies. The wide operating temperature and humidity ranges make the buzzer suitable for many indoor and sheltered outdoor environments. The white housing provides a neutral appearance that is easy to match with existing equipment.
Suitable for
Machine status alerts and fault notifications
Conveyor and production line warning signals
Control panels and industrial enclosures
Service and maintenance reminders in facilities
Key specifications
Supply voltage: 24V DC
Housing color: white
Diameter: 4 cm
Operating temperature: -20 to 50 °C
Operating humidity: 0 to 90% RH
How to use
Mount the buzzer unit in a suitable panel cutout or surface ensuring the housing is secure and wiring access is protected. Connect the device to a 24V DC supply following local electrical standards and the system’s wiring diagram. Test the unit after installation to confirm audible output and correct operation in coordination with the controlling device or PLC. Ensure connections are insulated and any control signals are properly configured to avoid unintended activation.
Usage recommendations
Install the unit where the sound can propagate without obstruction, avoid direct exposure to heavy rain or immersion, and verify that the ambient temperature and humidity remain within the specified ranges for reliable long-term operation.

## Specifications

| Feature | Value |
|---|---|
| Type | Buzzer unit |
| Certification | UL 508, CSA-C22.2 No.14
FCC 15 B A
RoHS (EN 50581)
EMC (EN 61000-6-4, EN 61000-6-2)
KC (KN 61000-6-4, KN 61000-6-2)
IEC/EN 60947-5-1, EN62471 |
| Operating relative humidity (H-H) | 0 - 90 |
| Operating temperature (T-T) | -20 - 50 |
| Power source | DC |
| Output voltage | 24 |
| Product colour | White |
| Diameter | 40 mm |
| International Protection (IP) code | IP65 |
| Brand compatibility | PATLITE |
| Quantity per pack | 1 pc(s) |
| Sustainability certificates | RoHS |

## FAQ

### How much does the Buzzer unit PATLITE LR4-BW cost, and is it available for purchase?

The price is 40.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 14.07.2026 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. 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 Patlite 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 Patlite 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/3152069/58261791_large.webp