The motion sensor alarm can give you some warning that could around a corner, through a garage and into the house.

Features:
Includes wireless battery operated sensor and plug in receiver,Just place the sensor at the entrance to your driveway and the receiver inside your home.
It detects movements and sends a signal to the receiver from up to 328 feet (100m) away.
Alerts you when someone enters your driveway, walking path, doorway or business, such as visitors, vehicles, intruders, animals or kids coming or going.
Advanced notice when someone or something enters before they surprise you.
Use it to monitor any area inside or outside, its wireless so you can place it anywhere in the house or even take it from room to room.
Specifications
Working Voltage of the Receiver：110V-240V
Working Voltage of the PIR Sensor：4.5V（3 AAA batteries）
Working Range: Up to 328 feet (100 meters)
Infrared Sensing Range: Up to 23 feet (7 meters)
Receiver Size: 3.14″ L x 2.99″ W x 1.29″ H (80 x 76 x 33mm)
Sensor Size: 3.14″ L x 2.32″ W x 1.77″ H (80 x 59 x 45mm)P ackaging Weight: 7.76 ounces (.22kgs)
eceiver Switch Settings:M
usic source: 38 different songs
Volume Adjustment: high, middle, low

Product Features

• LONG RANGE CONNECTIION-Working Range up to 328 feet (100 meters) between receiver and transmitter allowing you to place it a good distance from the receiver to warn you of arrival and departure of family members, unwanted guests or solicitors, or anyone who visits your home or business.
• Easy, Fast, Wire Free Installation: Infrared sensor detects motion and sends a signal to the receiver. Chose from 38 Ringtones with Bright LED Light. Sensor is wall mountable.
• Ideal for front doors, window frames, driveways, walking paths, and anywhere in your home you want to be alerted to motion. Also great to alert business owners that are working in the back, or out of sight, to customers entering their store.Please note that this not waterproof.Keep it away from rains or cover adequately.
• Wireless Plug-in Receiver: The portable wireless plug-in receiver plugs into any standard outlet. The sensor uses 3 AAA batteries (Not Included). Detection time delay in between motion sensor alerts is configurable from 15 seconds to 30 seconds, just place the sensor at the entrance to your driveway and the receiver inside your home.
• 4 Sensor and 1 Receiver- Receiver support to pair with multiple sensors, Sensors can be installed on different floors (rooms) to ensure that alert chime.