# Ceiling motion presence detector Legrand 999834 — ceiling-mounted sensor for motion and presence detection

**URL:** https://aio.lv/en/product--legrand-999834--11443322
**Data updated:** 2026-02-15 12:36 (EET)
**Category:** Computer Component Accessories
**Manufacturer:** Legrand
**Manufacturer code:** 999834
**EAN:** 4255643400083
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 51.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 42.97 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--legrand-999834--11443322

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.99 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Ceiling motion presence detector Legrand 999834 is a ceiling-mounted sensor designed to detect motion and presence in indoor spaces. It serves to automate lighting and control systems by switching lights on/off based on occupancy. Suitable for offices, corridors, meeting rooms and residential areas, it helps save energy and improve comfort by providing reliable occupancy detection.

## Long description

Ceiling motion presence detector Legrand 999834 is a ceiling-mounted sensor designed to detect both motion and presence in indoor spaces. It integrates with lighting and automation systems to switch lights on or off based on occupancy, providing consistent detection across offices, corridors, meeting rooms and residential areas. The device is suitable for standard ceiling mounting and offers configurable detection parameters to adapt to different room sizes and usage patterns.
Advantages
The sensor provides dual-mode detection to distinguish between transient motion and sustained presence, improving reliability for automated lighting control. Its ceiling-mounted design ensures broad coverage and reduces blind spots compared with wall-mounted alternatives. The detector is compatible with common lighting control systems and supports adjustable sensitivity and time delay settings, allowing fine-tuning for energy efficiency and user comfort.
Suitable for
Office open-plan areas and private offices
Corridors, stairwells and circulation spaces
Meeting rooms and conference areas
Residential rooms such as living rooms and hallways
Key specifications
Mounting: ceiling-mounted for central coverage
Detection type: motion and presence detection
Coverage: designed for typical indoor room sizes (coverage depends on ceiling height and placement)
Adjustments: configurable sensitivity and time delay settings
Installation: flush or surface mounting compatible with standard ceilings
Integration: intended for connection to lighting control systems for automatic switching
How to use
Install the detector centrally on the ceiling of the monitored room at the recommended height, following local electrical codes and the manufacturer's installation guide. Connect the sensor to the lighting control circuit and configure sensitivity, time delay and presence detection mode according to the room function. Test coverage after installation by walking through the space and verifying that lights switch on and off as expected; adjust settings if there are areas with insufficient detection or unwanted triggering.
Usage recommendations
Position the detector away from direct airflow sources and heat-emitting equipment to avoid false triggers. For larger or irregularly shaped rooms, consider additional sensors or alternate placement to ensure complete coverage. Periodically check and recalibrate sensitivity and time delay settings to match changes in room layout or usage patterns.

## FAQ

### How much does the Ceiling motion presence detector Legrand 999834 cost, and is it available for purchase?

The price is 51.99 € (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 15.07.2026 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 Legrand 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 Legrand 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/11443322/66081559_large.webp