Electrical Box Wireless Color & 2.4 GHz Transmitter -- If you need to monitor the outside of your property you will need the wireless Electrical Box hidden camera. Just mount to a building or pole and you're ready to start monitoring. The box measures 4 inches x 4 inches x 2 1/2 inches and is weatherproof. Powered by a 12 hour rechargeable battery pack, no wires or cords to plug in.