This mutifunctional SECURE DOG alarm system uses an electronic radar-wave sense control. This technology allow it to "see" through wood, cement, brick, glass, etc. When an intruder comes within 22 feet, it automatically begins barking like an angry dog. From outside, it sounds like you have a very unfriendly dog inside. It has a 1200 field of view. The radar sensitivity and volume control are adjustable. Stands 9 inches tall. Powered by AC power supply. Does not use batteries. Unit needs to face in the direction you want to detect motion. There will also be limited detection from the sides and rear. It also can announce visitors with a melody of birds, frogs and waterfall sounds. These relaxing sounds can also be played whenever you want a soothing background sound.

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7.5 inches tall

Four settings to choose from: Continual tranquil sounds of the rainforest, Alert sound of an angry and protective watchdog, Soothing rainforest sounds to alert you of a guest's arrival and Alert sounds of both the angry watchdog and a warning siren.

• Reliable 24-hour protection
• No Installation required
• Protection with none of the problems of owning a real dog.
• Switches from the watchdog to the tranquil sounds of nature with the simple switch of a button.
• Variable distance sensitivity (up to 21') as well as volume control.
• Senses movement through walls, doors, and glass to alert you of a visitor's arrival.
• Size: 7.5" x 5" x 5.5"
• Maintenance free.