All electronics ship with US style plugs.You may need a voltage converter or a plug adapter.
Special Features
❃❃It is 4 Channel Isolated 5V 10A Relay Module for Arduino, AVR, PIC, ARM, DSP, etc;Each channel of the module can be set by jumper cap high or low level trigger
❃❃Equipped with high-current relay, maximum load: AC250V 10A, 15A 125VAC, DC30V 10A
❃❃Relay Output: Normally Opened (NO) : normally open pin of relay. NO pin is not connect to COM pin when relay off.NO pin is connect to COM pin when relay on; Common pin (COM) : Common pin of the relay; Normally closed (NC) : normally close pin of relay.NC pin is connect to COM pin when relay off.NC pin is not connect to COM pin when relay on
❃❃High/Low Level Trigger:1. Low level trigger when jumper and L short circuit; 2. High level trigger when jumper and H short circuit