CentIoT® - 5V 10A Relay Module WITH OPTOCOUPLER - AC and DC Appliance Control - for Arduino DSP AVR PIC ARM T10A It has an inbuilt over

It has an inbuilt over heating and over current protection

There are also two potentiometers on the board and one jumper (see picture)

surge voltage design

Charge module: Linear charging

CentIoT® - 5V 10A Relay Module WITH OPTOCOUPLER - AC and DC Appliance Control - for Arduino DSP AVR PIC ARM T10A It has an inbuilt overBrand: CentIoT Features: Operating voltage: DC 5V; Trigger current: 5mA; Normally open interface maximum load: AC 250V 10A, DC 30V 10A. Trigger Type: Low = ground level = logic 0 = logical false High = supply voltage (usually Vcc or Vdd) = logic 1 = logical true. This Module Is In Line With International Safety Standard, Control Areas And Load Area Have The Isolation Groove; Blue Kf301 Terminal Line More Convenient. Uses The Best Quality Relay; DC Or