









🚪🔔 Secure your sanctuary with a single click—don’t let safety wait!
The Blackt Electrotech BT51D is a compact, wireless door and window alarm sensor delivering a powerful 120dB alert to instantly notify you of unauthorized entry. Designed for easy peel-and-stick installation, it fits seamlessly on doors and windows, powered by included alkaline batteries for immediate use. Ideal for enhancing home security with minimal effort, it’s the smart choice for proactive protection.
| Control method | Touch |
| Noise level | 120 Decibels |
| Manufacturer | Blackt Electrotech |
| Item Weight | 80 g |
| Product Dimensions | 8 x 3 x 2 cm; 80 g |
| Item model number | BT51D |
| Size | Small |
| Color | white |
| Included components | magnet |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| tech_spec_battery_description_toys | Alkaline |
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