ZHAOYAO DC 5V 8 Channel Relay Board Module with Optocoupler for Arduino Smart Home Switch

A baby description1 The module is controlled by optocoupler and Songle relay. The AC voltage is up to 250V, the AC current is up to 10A, the DC voltage is up to 30V, and the DC current is up to 10A.2 Using triode driver, strong driving ability;3 working voltage 5V4 with fixed bolt holes for easy installation5 small PCB size: 4.5cm * 4.6cm * 1.8cm (length * width * height)6 Power indicator (green), two-way relay status indicator (red)7 low pull, high release.  Two module interface descriptionLeft 3-pin connector1 JD-VC relay supply voltage2 VCC module supply voltage3 GND module groundRight 4-pin connector1 VCC module supply voltage 5V2 GND module ground31N1-1N2 Relay Control Interface Connected to MCU PortGeneralBrandZHAOYAOQuantity1 setMaterialPCB circuit boardSpecificationEnglish Manual / SpecNoOther FeaturesCertification-Packing List1 x ModulePackage Weight:0.134kg (0.295lb)Package Size:5cm x 5cm x 2cm (1.97in x 1.97in x 0.79in)