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🔐 Stay one step ahead—secure your sanctuary with Wolf-Guard’s smart sensor!
The Wolf-Guard 433MHz MC-03B Door Window Sensor is a compact, wireless contact sensor designed for home security systems. Operating on a reliable 433MHz frequency, it features a built-in CR2032 lithium battery lasting over 2 years, ensuring long-term protection. Easy to install with adhesive backing, it detects door or window openings within 15mm and transmits alerts up to 80 meters to your control host. This sensor kit includes all necessary components for quick setup, making it an essential upgrade for millennial professionals seeking smart, hassle-free home security.
| ASIN | B077BX5NZZ |
| Battery Description | CR2 Battery |
| Battery description | CR2 Battery |
| Best Sellers Rank | 259,433 in DIY & Tools ( See Top 100 in DIY & Tools ) 194 in Home Security Door & Window Sensors |
| Brand | WOLF-GUARD |
| Colour | White |
| Compatible Devices | Various |
| Compatible devices | Various |
| Control Method | Remote |
| Country of Origin | China |
| Customer Reviews | 3.9 out of 5 stars 96 Reviews |
| Included Components | Door magnet two parts, two adhesive tapes |
| Item Dimensions L x W x H | 8L x 3W x 11H centimetres |
| Item Weight | 0.03 Kilograms |
| Manufacturer | ChiTongDa |
| Maximum Range | 80 Metres |
| Model Number | Door sensor |
| Mounting Type | Wall Mount |
| Number of Batteries | 1 CR2 batteries required. (included) |
| Part Number | MC-03B-100 |
| Power source | Battery Powered |
| Product dimensions | 8L x 3W x 11H centimetres |
| Sensor Technology | Contact Sensor |
| Shape | Rectangular |
| Size | Slender |
| UPC | 711005689656 |
| Voltage | 3 Volts |
S**Y
Great find
Great bit of kit, working well
T**N
Feel a lot safer now as I live alone
Easy to install, very satisfied
D**G
battery
Bought system aug 2025 seems good and does the job but 2 of the window sensors flatten battery in a week or less. have tried to contact customer services but they dont contact you
A**S
Check product for functionality before fitting
This replacement item worked at last, had 2 faulty ones before!
G**P
Good
Good addition to my system
D**.
well made
well made
J**R
As advertised by seller
Not fitted yet
Trustpilot
2 months ago
1 month ago