The Chamberlain Motion Sensor with Wireless Motion Alert is a convenient and affordable safety / security system. It features weatherproof outdoor sensor with adjustable sensitivity control. The sensor may be placed up to a ½ mile from the base unit. Alerts with light and sound when vehicles or pede...

Range up to .5 miles. Alerts with light sound when vehicles or pedestrians approach. Perfect for home, business, property worksite. Easy installation/easy operation. Weatherproof outdoor sensors with adjustable sensitivity control. Expandable up to sensors

- Chamberlain wireless motion alert- Alerts with light and sound when vehicles or pedestrians are approaching- Easy installation/ easy operation- Weatherproof outdoor sensor with adjustable sensitivity control- Expandable up to 8 sensors- Includes 1 base unit and 1 sensor - Half mile range from sens...