---
product_id: 169038667
title: "Wolf-Guard 433MHz MC-03B Door Window Sensor for Home Guard System,Power Switch,Emergency Button"
brand: "wolf-guard"
price: "€ 30.94"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.es/products/169038667-wolf-guard-433mhz-mc-03b-door-window-sensor-for-home
store_origin: ES
region: Spain
---

# Compact 3" x 1" size 80m wireless range 2+ years battery life Wolf-Guard 433MHz MC-03B Door Window Sensor for Home Guard System,Power Switch,Emergency Button

**Brand:** wolf-guard
**Price:** € 30.94
**Availability:** ✅ In Stock

## Summary

> 🔐 Stay one step ahead—secure smarter, live freer.

## Quick Answers

- **What is this?** Wolf-Guard 433MHz MC-03B Door Window Sensor for Home Guard System,Power Switch,Emergency Button by wolf-guard
- **How much does it cost?** € 30.94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/169038667-wolf-guard-433mhz-mc-03b-door-window-sensor-for-home)

## Best For

- wolf-guard enthusiasts

## Why This Product

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

## Key Features

- • **Discreet Yet Powerful:** Sleek ABS design blends in while guarding your space with 80m wireless range.
- • **Ultra-Long Battery Life:** CR2032 lithium battery powers your peace of mind for over 2 years.
- • **Precision Contact Sensor:** Detects door/window openings within 15mm for instant alerts.
- • **Seamless Home Integration:** Works flawlessly with your existing 433MHz home alarm system.
- • **Effortless Peel & Stick Installation:** Get your security up in seconds—no tools, no hassle.

## Overview

The Wolf-Guard MC-03B is a compact, battery-powered 433MHz door/window sensor designed for home security systems. Featuring a long-lasting CR2032 lithium battery with over 2 years of life, an 80-meter wireless range, and easy peel-and-stick installation, it instantly alerts your control host when doors or windows open beyond 15mm. Crafted from durable ABS, it offers reliable, discreet protection for your home or office.

## Description

Full description not available

## Features

- SIZE:big 3”X1”X0.5” ,small 2.3”X0.5”X0.3”
- POWERFUL: built-in DC3V,CR2032 li battery, lasts for over 2 years
- BOX CONTENT: 1 transmitter and 1 magnetic bar,2 sticks,1 manual
- INSTALLATION:just peal the sticker and stick it,the small must be on the big right and bottom aligned
- SENSITIVE:work with home alarm system,it will send the alarm signal to control host once the door or window are opened only 15mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Battery description | Lithium |
| Number of batteries | 1 CR2 batteries required. (included) |
| Voltage | 3 Volts |
| Control method | Remote |
| Mounting type | Wall Mount |
| Maximum range | 80 Metres |
| Sensor technology | Contact Sensor |
| UPC | 711005689656 |
| Manufacturer | ChiTongDa |
| Part Number | MC-03B-100 |
| Product Dimensions | 8 x 3 x 11 cm; 30 g |
| Batteries | 1 CR2 batteries required. (included) |
| Item model number | Door sensor |
| Material | ABS |
| Shape | Rectangular |
| Item Package Quantity | 1 |
| Usage | Home alarm systems |
| Batteries included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Metal |
| Item Weight | 30 g |

## Product Details

- **Colour:** White
- **Brand:** WOLF-GUARD
- **Power source:** Battery Powered
- **Compatible devices:** Various
- **Product dimensions:** 8L x 3W x 11H centimetres

## Images

![Wolf-Guard 433MHz MC-03B Door Window Sensor for Home Guard System,Power Switch,Emergency Button - Image 1](https://m.media-amazon.com/images/I/61ewvu2XnUL.jpg)
![Wolf-Guard 433MHz MC-03B Door Window Sensor for Home Guard System,Power Switch,Emergency Button - Image 2](https://m.media-amazon.com/images/I/61PPmI6jrNS.jpg)
![Wolf-Guard 433MHz MC-03B Door Window Sensor for Home Guard System,Power Switch,Emergency Button - Image 3](https://m.media-amazon.com/images/I/61phJq2rcGL.jpg)
![Wolf-Guard 433MHz MC-03B Door Window Sensor for Home Guard System,Power Switch,Emergency Button - Image 4](https://m.media-amazon.com/images/I/71c3nbe-WxL.jpg)
![Wolf-Guard 433MHz MC-03B Door Window Sensor for Home Guard System,Power Switch,Emergency Button - Image 5](https://m.media-amazon.com/images/I/514QggXpixL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Feel a lot safer now as I live alone
*by T***N on 8 June 2024*

Easy to install, very satisfied

### ⭐⭐⭐⭐⭐ Check product for functionality before fitting
*by A***S on 15 February 2023*

This replacement item worked at last, had 2 faulty ones before!

### ⭐⭐⭐⭐⭐ Good
*by G***P on 3 August 2022*

Good addition to my system

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**Shop now:** [https://www.desertcart.es/products/169038667-wolf-guard-433mhz-mc-03b-door-window-sensor-for-home](https://www.desertcart.es/products/169038667-wolf-guard-433mhz-mc-03b-door-window-sensor-for-home)

---

*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-22*