# Dusk Switch ETI SOU-1 230V Photocell Relay 230V 16A 1 Contact 50000 lx

**URL:** https://aio.lv/en/product--eti-002470011--4797372
**Data updated:** 2026-04-24 17:39 (EEST)
**Category:** Smart Switches
**Manufacturer:** ETI
**Manufacturer code:** 002470011
**EAN:** 8594030338360
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 37.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 31.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eti-002470011--4797372

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Friday | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 4.99 EUR |

## Summary description

The ETI SOU-1 dusk switch is a photocell relay designed for automatic lighting control. Rated for 230V supply and switching up to 16A through a single contact, it activates based on ambient light sensitivity up to 50,000 lux. Use it to switch outdoor or indoor lighting, signage and control circuits where automatic dusk/dawn operation is required.

## Long description

The ETI SOU-1 dusk switch is a photocell relay designed for automatic lighting control based on ambient light levels. Intended for 230 V mains systems, this device operates a single changeover contact to switch lighting, signage or control circuits when daylight falls below or rises above a set threshold. The SOU-1 responds to light intensity up to 50,000 lux and is suitable for applications that require dusk-to-dawn or twilight switching without manual intervention.
Advantages
The photocell relay provides reliable automatic operation for lighting control at a 230 V supply and can switch loads up to 16 A on one contact. Its sensitivity to high ambient illumination (up to 50,000 lux) makes it suitable for a wide range of daylight conditions. The device is compact and can be integrated into existing circuits for outdoor and indoor installations where automatic switching based on natural light is needed.
Suitable for
 Automatic street, garden or pathway lighting control
 External signage and display lighting
 Perimeter and security lighting circuits
 Simple control circuits requiring dusk/dawn switching
When it may not be suitable
This dusk switch is intended for standard 230 V AC supplies and single-contact load switching up to 16 A. It is not appropriate for direct switching of heavy three-phase loads, variable-frequency drives, or equipment that requires more than a single contact or higher switching currents. Environments that demand sealed, waterproof enclosures or explosion-proof certification may require a differently specified unit.
Key specifications
 Supply voltage: 230 V AC
 Switching capacity: up to 16 A on one contact
 Contact configuration: single changeover contact
 Light sensitivity: up to 50,000 lux
 Application: dusk/dawn (photocell) switching for lighting and control circuits
How to use
Install the ETI SOU-1 in a location with an unobstructed view of the ambient light to ensure accurate switching. Mount and wire the unit according to local electrical regulations and the device wiring diagram: connect the 230 V supply to the designated input terminals and the controlled circuit to the switched contact. After powering, the relay will operate automatically, closing or opening the contact as ambient light falls below or rises above the sensitivity threshold. Verify correct operation at dusk and dawn and adjust placement if shadows or artificial light sources affect performance.
What to consider before purchase
 Confirm compatibility with the mains supply voltage (230 V AC).
 Check that the load current does not exceed 16 A on the switched contact.
 Ensure the mounting location provides representative ambient light without interference from artificial sources.
 Consider environmental protection requirements (e.g., IP rating) for outdoor installations.
Usage recommendations
For reliable dusk/dawn operation, mount the photocell where it sees natural daylight, away from direct artificial illumination such as nearby lamps or illuminated signs. Test switching behavior at different light levels and, if necessary, adjust placement to avoid false triggering. When controlling inductive loads like motors or transformers, include appropriate protective measures such as RC snubbers or contactors sized for inrush currents.

## FAQ

### How much does the ETI SOU-1 230V Dusk Photocell Relay cost, and is it available for purchase?

The price is 37.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 32 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 Friday 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 ETI 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 ETI 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/4797372/68570388_large.webp