Fangrui Product Details It Is An Isolated 12v 10a Relay Module With 16 Channels, Each Relay Can Be Switched On And Off Individually Via -isolated Digital Input. The Standard Interface Can Be Directly Connected To Microcontrollers And Controlled By A Variety Of Microcontrollers Such As For , Avr, Pic, Arm, , Etc. Equipped With High Current Relay, Maximum Load: Ac250v 10a, 15a 125vac, Dc30v 10a; -isolator Current: 5ma. Reliable: Fault-tolerant Design, Even If The Control Line Breaks, The Relay Not Move; With Optical Coupling Insulation, More Reliable, More Stable. Easy Installation: Equipped With Screwed Terminal Plate And Fixed Screw Holes (diameter: 3.1mm) On Both Sides For Easy Installation. With Indicator Leds For Relay Output Status. The Working Status Indicator Lights Up To Safe Use. Colour:blue Material:pcb Package Contents: 1 X Relay Module Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From