Motion Sensors

Having a motion sensor outside or inside your house is a good safety features. You maybe advised to have multiple motion sensors in your house or apartment.

Dorcy 41-1071 LED Wireless Motion Sensor Flood-Lite

You can get some motion sensors relatively inexpensive for under $50 like Super Bright Wireless Sensor

A good place to put a motion sensor is in your driveway.

Driveway Patrol Sensor and Receiver Kit

SE Wireless Motion Sensor Light - 10 Super-Bright LED