A kit which help you to put 4 cameras at the places you want to monitor, connecting their output signals to the four inputs of the Smart kit No 1220, and finally to send its output at a single display monitor. The outputs can be controlled manually with two pushbuttons switches or automatically with another button which can control all inputs in sequence every 5 seconds. The device can also be used in audio sources, alarm systems or in other applications where there is a need for combined monitoring, Four relay input switching system with LED indicators. Built in 5V regulator. Operation voltage: 9...12VDC. Power consumption: 50 mA.