Light flashes when someone knocks at the door. Use it as flashlight, too.

Features:

• Door chime or door alarm (105 dB)
• Flashlight with ultra bright LED
• Double sensor: vibration sensor when hanging over the top of the door (bracket included), and electrostatic sensor when hanging on the door knob.
• HIGH/LOW sensitivity selector
• ALARM/OFF/CHIME switch
• FLASHLIGHT ON/OFF switch
• Battery low indicator
• Operate with 3 AA batteries (not included)
• 6VDC power jack (AC adapter sold separate)