Is someone entering your driveway? Know in an instant with this driveway alarm! Waiting for a delivery? Your daughter to get home from a date? Want to extend your home security system? Here's your answer!

• Advanced motion detection technology instantly alerts you audibly when someone approaches
• Waterproof infrared transmitter for outside and a receiver for inside
• Up to 400’ range between transmitter and receiver
• Detects motion up to 30 feet from the sensor
• 1 '9V' and 3 'C'?batteries not included