Continueous Loud Alram Sound Use: Home Safety/ Shop Safety/ Two Weelers/ Three Weelers Safety Process: Put Key and Flip Lock Handle and Take Off Key Corrosion resistant, waterproof and durable to use. Low Power Consuption Include Battery and Additonal Battery With it Powered by six button batteries. Supplied with three keys, convenient to use. Color: Black Can be used on door, window, bicycle, container, motor bike, tricycle, pull gate, garden, etc.