November 2026
MCB-43 Navkar Systems Wireless Door Sensor 433 Mhz with Button in Front
MCB-43 is a plug-and-play magnetic door or window alarm that sounds at 100 dB when the two parts separate. It runs on 2 AAA batteries, has an on/off switch and sticks on with double-sided adhesive, with no wiring.
Specifications
| Model | MCB-43 |
|---|---|
| Alarm sound | 100 dB |
| Power | 2 x AAA batteries (not included) |
| Switch | On/off switch |
| Working | Sounds when the small part is separated from the main unit, stops when rejoined |
| Mounting | Double-sided adhesive, no wiring |
| Maximum gap | Within 0.6 inch (about 15 mm) |
| Frequency | 433 MHz (as in title) |
In the box
Frequently asked questions
It sounds a loud 100 dB alarm when the small magnet part is separated from the main unit, which happens when the door or window opens.
No. It is stuck on with double-sided adhesive and needs no wiring.
No. Insert 2 AAA batteries yourself.
The gap between the alarm and the magnet part must be within 0.6 inch (about 15 mm).
The alarm stops when the two parts are joined again. You can also switch the unit off.
Hinged or sliding doors and windows, showcases and cupboards, in homes, garages, warehouses, offices and similar places.
The text describes a stand-alone alarm. The title mentions 433 MHz, but the listing does not explain panel pairing, so confirm with NavKar first.
Wireless sensors fix with double sided tape or screws and run on batteries. Place magnetic contacts on the door or window frame and motion sensors at a corner facing the room.
Battery life depends on use and the battery type listed in the product details; most wireless sensors run for many months on a single battery.
Yes. Free technical support is available for installation and setup.