Guard Dog Security Door Stop Alarm Wood/Black. This Home Alarm by Guard Dog Security is perfect for use in hotels as an at-home security measure or even installed at home or work. The Guard Dog Security Door Alarm SHD-10 is small portable and easy to use. Activate the sensor anywhere a door is open and it will sound a 128 decibel alarm to let any would-be intruder know that you're home or away. Get your Guard Dog Security Door Stop Security Alarm today and protect what matters most. Package Contents: Guard Dog Security Door Stop Alarm Guard Dog Security AL-GDDS1000W: Door Stop Alarm Wood/Black