• Build an alarm you can fit to your bedroom door. • Protect your property from spies and intruders. • Learn the science of connecting an electric circuit. • Packaging and colours may vary. Learn the science behind building an electric circuit and build your own kick wire door alarm with this Science Museum kit. Install it in your bedroom and stop those unwanted intruders breaking in! Additional details: Packaging size: 215mm x 180mm x 60mm Recommended age: 8+ Batteries included: No Batteries required: 2x AA