Brand N/A Model N/A Quantity 1 Color Red + blue Material PCB Features Supports high and low level trigger; Each channel can choose trigger way independently; Max load: AC 250V / 10A DC 30V / 10A; Adopts SMD optocoupler strong drive ability and stable performance; Trigger current: 5mA; Working voltage: 12V; Allows error; With green power indicator and red state indicators; All ports can be lead out directly convenient to use; Module: 141.5 x 50 x 18.5mm; With 4 fixing bolt holes hole: 3.1mm space: 136 x 44.5mm Specification DC+: connects to positive port DC-: connects to negative port; IN1-IN8: Can control relay open / close by setting high / low level; Relay output port: 24pin port wire can be lead out directly; NO1~NO8: constant open port suspend before close connect w/ COM after relay closed; COM1~COM8: common port; NC1~NC8: relay constant closed port connects w/ COM before close and suspend after closed Application A products for Arduino that works with official Arduino boards. English Manual/Spec Yes (E-format) Packing List 1 x Module