The SWADS-ALARMS is an easy-to-use, Swann wireless unit with motion detection. With 2 PIR alert motion sensors, you'll be able to guard entrances, doorways, driveways and more. The receiver unit emits an alarm and will light up when the alert sensor detects movement. This is a long-range unit, as the receiver can be placed up to 60 metres from the sensors and the sensors will recognise movement from up to 12 metres away. The 3 individual components of this unit also have a weatherproof design for monitoring driveways and other outdoor locations, and have the ability to adjust the position using the rotating mounting brackets. Simply use 3x AA batteries for the receiver and 3x AAA batteries for the sensor. The kit is expandable by adding more sensors from the Swann DIY alert range for a customised alert system for your home or business.