---
product_id: 20500554
title: "27121-0-225"
brand: "fenwal"
price: "€ 16.43"
currency: EUR
in_stock: false
url: https://www.desertcart.fr/products/20500554-27121-0-225
store_origin: FR
region: France
---

# Versatile extinguishants Alarm functionality Fast reaction time 27121-0-225

**Brand:** fenwal
**Price:** € 16.43
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Your first line of defense against fire emergencies! 🔔

## Quick Answers

- **What is this?** 27121-0-225 by fenwal
- **How much does it cost?** € 16.43 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/20500554-27121-0-225)

## Best For

- fenwal enthusiasts

## Why This Product

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

## Key Features

- • **Rapid Response:** Detects fast rate fires and reacts instantly.
- • **Dual Functionality:** Acts as both an alarm and a release device.
- • **User-Friendly Design:** No batteries required, ensuring hassle-free operation.
- • **Unmatched Reliability:** Over 45 years of industry standard performance.
- • **Versatile Applications:** Controls various extinguishants including CO2 and clean agents.

## Overview

The DETECT-A-FIRE unit by Kidde-Fenwal is a highly reliable fire protection device that has been a cornerstone in the industry for over 45 years. It detects rapid fire growth and can function as both an alarm and a release mechanism for various extinguishing agents, ensuring safety and peace of mind in any environment.

## Description

The secret of the unit's sensitivity is in the design (Figure 1). The outer shell is made of a rapidly expanding alloy which closely follows changes in surrounding air temperature. The inner struts are made of a lower expanding alloy. Designed to resist thermal energy absorption and sealed inside the shell, the struts follow temperature changes more slowly. A slow rate fire (Figure 2) will heat the shell and struts together. At the "set point," the unit will trigger, actuating the alarm or releasing the extinguishant. A transient rush of warm air up to 40�F/min. may expand the shell, but not enough to trigger the unit. By ignoring transient warm air excursions, the DETECT-A-FIRE unit virtually eliminates false alarms prevalent with rate-of-rise devices.

## Features

- DETECT-A-FIRE units by Kidde-Fenwal are the "heart" of many Fire Protection Systems. Many thousands of these units are now in use controlling the release of extinguishants such as clean agents, C02, water, or dry chemicals. In some systems the device is used as an ALARM device, to sense overheat or fire, and alert personnel. In other systems, it is used as a RELEASE device, to sense fire and actuate fire attack systems.
- These highly reliable devices have been a standard of the industry for over 45 years.
- If a fast rate fire (Figure 3) starts, the shell will expand rapidly. The struts will close, actuating the alarm or releasing the agent. The faster the fire rate of growth, the sooner the DETECT-A-FIRE unit will react.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Fenwal |
| Part Number | 271210225 |
| Is Discontinued By Manufacturer | No |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![27121-0-225 - Image 1](https://m.media-amazon.com/images/I/417THgWFcDL.jpg)

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**Shop now:** [https://www.desertcart.fr/products/20500554-27121-0-225](https://www.desertcart.fr/products/20500554-27121-0-225)

---

*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-03-10*