Double-duty Door Security Bar with Alarm not only blocks doors from opening, its alarm alerts you when someone tries to enter. Heavy-gauge steel bar extends from 29"-43" to brace any door from opening inward. As soon as the doorknob is touched, an alarm sounds -- choose from a powerful warning siren or barking dog sound, both effective ways to deter intruders. Door Bar Lock installs in seconds; no tools required. Perfect for homes and hotel rooms! Requires one 9V battery (not included).
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