The air freshener is powered by a 12 hour rechargeable battery pack, no wires or cords to plug in. Just set-up and go. You'll be able to see everything happening in the room. Measures 8.5 by 3.5. Includes: Wireless cameras include FREE 2.4 GHz receiver (a $160.00 value), All necessary power supplies and battery packs are included. Options: High Power is available with most 2.4 GHz transmitters and will increase transmission distance up to an additional 1500 feet...increasing your wireless transmission up to 2500 feet. X-Vision (.003 Lux) is a feature only available on black and white cameras. Allows best possible images in almost complete darkness.