---
product_id: 94069994
title: "BRK M300 Ionisation Smoke Alarm, Battery Powered, Compact Design"
brand: "brk"
price: "¥515"
currency: JPY
in_stock: false
reviews_count: 8
url: https://www.desertcart.jp/products/94069994-brk-m300-ionisation-smoke-alarm-battery-powered-compact-design
store_origin: JP
region: Japan
---

# Compact Design 85dB Alarm Battery Powered BRK M300 Ionisation Smoke Alarm, Battery Powered, Compact Design

**Brand:** brk
**Price:** ¥515
**Availability:** ❌ Out of Stock

## Summary

> 🚨 Your Silent Guardian in Safety!

## Quick Answers

- **What is this?** BRK M300 Ionisation Smoke Alarm, Battery Powered, Compact Design by brk
- **How much does it cost?** ¥515 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/94069994-brk-m300-ionisation-smoke-alarm-battery-powered-compact-design)

## Best For

- brk enthusiasts

## Why This Product

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

## Key Features

- • **Safety First:** Stay protected with cutting-edge smoke-sensing technology.
- • **Instant Alerts:** Loud 85dB alarm ensures you never miss a warning.
- • **Easy Installation:** Mounts effortlessly on ceilings or walls—no hassle!
- • **Whisper-Quiet Design:** Compact and unobtrusive, fits seamlessly into any room.
- • **Long-lasting Assurance:** Includes a 5-year guarantee for peace of mind.

## Overview

The BRK M300 Ionisation Smoke Alarm is a compact, battery-powered safety device featuring advanced smoke-sensing technology. With a sensitive dual ionisation sensor, it is perfect for living areas like bedrooms. The alarm emits a loud 85dB sound, ensuring alerts are heard easily. Its low-profile design allows for easy installation on ceilings or walls, and it comes with a 9-volt alkaline battery included, backed by a 5-year guarantee.

## Description

Full description not available

## Features

- Compact, general-purpose design incorporating the latest in smoke-sensing technology
- Sensitive dual ionisation sensor is ideal for living areas such as bedrooms
- Loud 85dB alarm can be heard easily
- Compact, low-profile design powered by an included 9-volt alkaline battery
- Installs easily on ceiling or wall; 5 year guarantee; Measures 111mm (D) x 37mm (H)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Newell Brands |
| Part Number | M300B |
| Product Dimensions | 11.1 x 11.1 x 3.7 cm; 80 g |
| Item model number | M300B |
| Style | Compact |
| Power Source | Battery Powered |
| Item Package Quantity | 1 |
| Included Components | Smoke Alarm, 9V Battery, Instruction Manual |
| Batteries included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Item Weight | 80 g |

## Product Details

- **Brand:** BRK
- **Style:** Compact
- **Power source:** Battery Powered
- **Alarm:** Audible
- **Sensor type:** Ionization
- **Global Trade Identification Number:** 00029054020031
- **Manufacturer:** Newell Brands
- **UPC:** 029054020031

## Images

![BRK M300 Ionisation Smoke Alarm, Battery Powered, Compact Design - Image 1](https://m.media-amazon.com/images/I/41bTk2UqExL.jpg)
![BRK M300 Ionisation Smoke Alarm, Battery Powered, Compact Design - Image 2](https://m.media-amazon.com/images/I/61X9-r7AMTL.jpg)
![BRK M300 Ionisation Smoke Alarm, Battery Powered, Compact Design - Image 3](https://m.media-amazon.com/images/I/61b+7xZi8YL.jpg)
![BRK M300 Ionisation Smoke Alarm, Battery Powered, Compact Design - Image 4](https://m.media-amazon.com/images/I/51rPqWtusKL.jpg)
![BRK M300 Ionisation Smoke Alarm, Battery Powered, Compact Design - Image 5](https://m.media-amazon.com/images/I/61ClAxULFjL.jpg)

## Questions & Answers

**Q: Does anyone know if this will fit the base of the Deta 1151? Thanks.**
A: No, this is a screw to the ceiling with two screws type.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Compact smoke alarm
*by K***B on 10 June 2021*

This was a replacement for a similar very old smoke alarm. This replacement fitted on to the original screws and was very easy to install.

### ⭐⭐⭐⭐ Smoke alarm
*by A***A on 28 January 2019*

BRK M300 Ionisation Smoke AlarmThis is a compact battery-operated smoke detector of the type so many of us have in our homes. It comes with a battery. The sound is nice and loud.A couple of niggles:* The instructions say to check the smoke alarm by depressing the button for up to 20 seconds till you hear 3 beeps. However, this one only gives 2 beeps. I presume it still works, but it is slightly concerning.* I find it extremely hard to work out where to sight the smoke detector: at least 30cm from this, no more than 30cm from that, and so on and so on. With high ceilings that cannot be reached except by step ladder, I don't know where to place it. The instructions seem complex and they are a list of do's and don'ts. That's the same as other smoke alarms I've had, but it does still leave me stumped.For sale at the time of writing this review at £7.71.

### ⭐⭐⭐⭐⭐ Tidy design easy to fit
*by B***E on 11 October 2019*

This is a compact, unobtrusive ionisation smoke detector that I found as easy to fit as any I have tried. BRK make a wide array of alarms and detectors but this is at their more entry level; nevertheless it is well built and passed my own smoke testing using a taper, provides a deafening tone and at the price you can’t go too wrong.Be aware that recent findings suggest that young children aren’t easily woken by such alarms (there are some on the market that play a recorded voice warning that is supposedly more effective) but otherwise this design of alarm is a tried and tested last way to ensure you are alerted in time.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-12*