120dB Magnetic Entry Alarm Small

Dimensions: main unit 51 × 38 × 18 mm; auxiliary unit 50 × 14 × 12 mm. Requires one standard 9V battery (sold separately). Minimalist design prioritises discreet placement and consistent performance. Installs in under 10 seconds using factory-applied industrial-grade double-sided tape — position main unit on moving surface (door/window), auxiliary on fixed frame, aligning directional markers with ~5 mm spacing. Triggers within milliseconds when separation exceeds 10 mm, releasing a sharp, high-frequency >120 dB alarm tone. Toggle ON/OFF switch allows daily deactivation during normal use. Ideal for UK homes with UPVC doors, timber windows, built-in wardrobes, under-stair cupboards, and basement storage access points.