Driveway Alarm - Wireless Motion Sensor Alert System with Long Range Receiver & Transmitter. Home or Office Security Protection - Front Doors, Entryways, Garages, Alleyways, Stockrooms and Warehouses. AC Adapter designed for use with Bubbas Home Driveway Alarms Use instead of 3 C batteries in driveway alarm receiver Input: AC 100-240V 50/60Hz 0.2A MAX, Output: 5.0V 1.0A Super low power consumption Can be used in other electronic devices that need 5V DC, center +