Use of low level control high level.
Such as the use of single chip microcomputer 3V or 5V voltage 9V or 12V voltage control HVCC maximum not more than 24V.Outlet OUT1 / OUT2 / OUT3 / OUT4 output current is equal to the largest HVCC / 5.1K, maximum absorption current 500mAInput: IN1 / IN2 / IN3 / IN4, SCM or for Ard uino IO port,GND with single-chip microcomputer or for Ard uino board GND connection.IN1 / IN2 / IN3 / IN4 respectively control the OUT1 / OUT2 / OUT3 / OUT4Output: OUT1 / OUT2 / OUT3 / OUT4Output: HVCC: Connection is control of high voltage anode, HGND connection is control of high voltage anodePCB Size: 25*24mm/0.98 * 0.94