# Steinel presence and dusk sensor TRUE PRESENCE DALI2APC model ST057954, DALI-compatible

**URL:** https://aio.lv/en/product--steinel-st057954--11769460
**Data updated:** 2026-03-08 22:29 (EET)
**Category:** Smart Sensors
**Manufacturer:** Steinel
**Manufacturer code:** ST057954
**EAN:** 4007841057954
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 279.99 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 231.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--steinel-st057954--11769460

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

Steinel TRUE PRESENCE DALI2APC (ST057954) is a combined presence and twilight sensor designed for DALI lighting systems. It detects movement and ambient light to control lighting automatically, enabling energy savings and improved comfort in commercial or public spaces. Use cases include corridors, offices, stairwells and entrance areas where automated, DALI-controlled lighting is required.

## Long description

The Steinel TRUE PRESENCE DALI2APC model ST057954 is a combined presence and dusk sensor designed for integration with DALI lighting systems. It continuously monitors motion and ambient light to provide automatic, DALI-compatible switching and dimming of connected luminaires. The sensor is intended for use in commercial and public indoor spaces where discrete, reliable detection of occupancy and daylight is required to optimise lighting control and energy consumption.
Advantages
The sensor offers accurate presence detection and twilight sensing in a single compact device, compatible with DALI control protocols for centralised lighting management. Its continuous motion detection improves response in low-speed movement situations, while integrated daylight measurement enables automatic adjustment of lighting levels according to ambient brightness. Designed for ceiling or high-mounted installation, the unit supports reliable operation in corridors, offices and stairwells and reduces manual intervention for lighting control.
Suitable for
Corridors and circulation areas in commercial buildings
Office spaces and meeting rooms requiring automated lighting
Stairwells, entrances and lobbies with DALI lighting
Public buildings and facilities where occupancy-based control is needed
Key specifications
Function: Combined presence (motion) and ambient light (twilight) detection
Control compatibility: DALI lighting systems for switching and dimming
Detection: Continuous presence detection suitable for low-motion scenarios
Mounting: Ceiling or high-mounted installation for broad coverage
Application environment: Indoor commercial and public spaces
How to use
Install the sensor on the ceiling or suitable high position according to mounting instructions so that the detection zone covers the intended area. Connect the device to the DALI bus and configure control parameters via the DALI system or central lighting controller. Adjust sensitivity, time delay and daylight thresholds in the DALI configuration to match occupancy patterns and ambient light conditions. After commissioning, the sensor will automatically switch or dim luminaires based on detected presence and measured daylight.
Usage recommendations
For optimal performance, position the sensor centrally above the area to be monitored and avoid obstructions that block the sensor’s field of view. Fine-tune daylight setpoints and time delays during commissioning to balance energy savings and user comfort. Use the sensor as part of a coordinated DALI lighting strategy to maximise efficiency in corridors, offices and public areas.

## FAQ

### How much does the Steinel TRUE PRESENCE DALI2APC sensor ST057954 cost, and is it available for purchase?

The price is 279.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 20.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Steinel TRUE PRESENCE DALI2APC sensor ST057954 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Steinel 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 Steinel 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/11769460/67149620_large.webp