This is an upgrade door stop than others.It is more durable than others with better quality. 3 Sensitivity Levels - Low - Medium - High, with an adjustable sensitivity switch on the side. Very loud shrill that would definitely scare someone away with 120db alarm. Weight: 128g You can use it as common door stopper when turn down the ON/OFF switch,hold door in open position. No installation required. Requires one 9 volt battery(Not include).Portable and easy way to add piece of mind when traveling or working alone.

• You can use it as common door stopper when turn down the ON/OFF switch,hold door in open position.
• No installation required. Requires one 9 volt battery(Not include).Portable and easy way to add piece of mind when traveling or working alone.

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