---
product_id: 529343513
title: "Siemens OP921"
brand: "silent knight"
price: "57408 Ft"
currency: HUF
in_stock: true
url: https://www.desertcart.hu/products/529343513-siemens-op921
store_origin: HU
region: Hungary
---

# Siemens OP921

**Brand:** silent knight
**Price:** 57408 Ft
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Siemens OP921 by silent knight
- **How much does it cost?** 57408 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/529343513-siemens-op921)

## Best For

- silent knight enthusiasts

## Why This Product

- Trusted silent knight brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Siemens OP921

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | SILENT KNIGHT |
| Power Source | Battery Powered |
| Item Weight | 8 ounces |
| Alarm | Visual |
| Sensor Type | optical,photoelectric |
| Manufacturer | AHST |
| UPC | 808237794811 |
| Part Number | OP921 |
| Product Dimensions | 5 x 5 x 3 inches |
| Item model number | OP921 |

## Images

![Siemens OP921 - Image 1](https://m.media-amazon.com/images/I/61RAXouFJ+L.jpg)
![Siemens OP921 - Image 2](https://m.media-amazon.com/images/I/61euq1dmXOL.jpg)

---

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**Shop now:** [https://www.desertcart.hu/products/529343513-siemens-op921](https://www.desertcart.hu/products/529343513-siemens-op921)

---

*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-21*