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USB Control Switch 2-Channel 5V Relay Module - Red
This module uses HID technology£¬ high quality£¬ no need use driver£¬ download data come with inside the application£¬ play and plug. Support Win7£¬ XP 32 system. Module description: USB connector£¬ stable. Using imported high-performance USB control chip. Use SongLe relay. Military level PCB production. 4-channel£¬ 8-channel power connector£¬ after aonnecting the power£¬ even if plug out the USB or turn off the computer£¬ relay can still keep setting condition. Fixed hole size is 3mm£¬ fixed hole central moment: 52.2mm x 36.6.