This single phrase solid state relay is for automatic application, a must component for temperature controller and other machinery control systems. High reliability, compact size, a great part for temperature controller and other machinery control systems. Features - Color: Assorted color. - Material: Plastic, metal. - Size: 5.70X4.50X3.00cm/2.24X1.77X1.18 inch. - Output current: 40A. - Control voltage: 3-32VDC. - On-state buck: <=1.6V. - Control current: 5-20mA. - Load voltage: 20-480VAC. - On-off time: <=10mS. - Output requirements concatenated fuse or and the varistor. More than 25A must be on the radiator and fan cooling. - Fine electric magnetic interference, high sensitivity and fast switching speeds. - Low drive voltage and current. Unique shape and structure. - Especially suitable for corrosion, moisture, and other harsh environments. - It is manufactured with professional technology to ensure the of the product and can work for a long time. Package list: 2 x relay