# Delock U-Type Slot Photoelectric Sensor 5 mm, NPN, Light/Dark Switching, 2 m Cable

**URL:** https://aio.lv/en/product--delock-91872--12583255
**Data updated:** 2026-07-16 19:13 (EEST)
**Category:** Other goods
**Manufacturer:** DELOCK
**Manufacturer code:** 91872
**EAN:** 4043619918720
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.49 €
**Prices and availability valid until:** 2026-08-16 23:59
**Price without VAT (21%):** 21.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--delock-91872--12583255

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.08.2026 | free |
| Pickup points | 19.08.2026 | 1.79 EUR |
| Courier delivery to door | 19.08.2026 | 4.99 EUR |

## Summary description

The Delock U-type slot photoelectric sensor with a 5 mm gap is designed for precise object detection in industrial automation. It features NPN output, selectable light-on/dark-on switching modes, and comes with a 2-meter cable with open ends. This sensor is ideal for position sensing, counting, and limit detection in various electronic and mechanical applications.

## Long description

The Delock U-type slot photoelectric sensor is a high-precision component engineered for reliable object detection in industrial automation environments. Featuring a 5 mm slot width, this sensor utilizes an infrared light beam to detect objects passing through the gap. It is equipped with an NPN output and offers the flexibility of selectable light-on or dark-on switching modes, allowing for versatile integration into various control systems. The unit is supplied with a durable 2-meter cable with open ends, facilitating straightforward installation and connection to existing machinery.
Advantages
This photoelectric sensor provides exceptional accuracy for high-speed detection tasks, ensuring consistent performance in demanding industrial settings. The U-shaped design allows for easy mounting and alignment, while the selectable switching modes provide the flexibility needed to adapt to different logic requirements in automation circuits. Its robust construction ensures longevity, and the integrated cable simplifies the wiring process, reducing the time required for setup and maintenance.
Suitable for
Object counting on conveyor belts
Position sensing in mechanical assemblies
Limit detection for moving parts
Edge detection for thin materials
This sensor may not be suitable for detecting transparent or highly reflective objects, as these materials can interfere with the infrared beam. Additionally, it is not intended for outdoor use in environments with high levels of ambient sunlight or extreme weather conditions, as these factors may cause false triggering or signal degradation.
Key specifications
Slot width: 5 mm
Output type: NPN
Switching mode: Selectable light-on or dark-on
Cable length: 2 meters
Connection: Open cable ends
To use the sensor, mount it securely so that the object to be detected passes through the 5 mm slot. Connect the wires according to the technical documentation, ensuring the power supply matches the specified voltage requirements. Once powered, select the desired switching mode using the integrated controls to match your system's logic. Ensure the sensor is kept clean and free from dust or debris to maintain optimal detection accuracy.
What to consider before purchase
Verify that the 5 mm slot width is sufficient for the objects you intend to detect.
Ensure your control system is compatible with NPN output signals.
Check that the 2-meter cable length is adequate for your installation layout.
Confirm the environmental conditions are free from excessive dust or intense ambient light.
Usage recommendations: Regularly inspect the optical surfaces of the slot to ensure they remain free of dust, oil, or other contaminants. Clean the sensor periodically with a soft, dry cloth to prevent signal interference and maintain consistent detection performance.

## FAQ

### How much does the Delock 91872 U-Type Slot Photoelectric Sensor 5 mm cost, and is it available for purchase?

The price is 25.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 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 14.08.2026 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 DELOCK 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 DELOCK 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/12583255/68953589_large.webp