3pcs 1 Channel 5V USB Relay Switch Programmable Computer Control for Smart Home Module

Tip It is recommended to use under win7 XP win10 customer feedback can be used and some can not please consider carefully before placing an order Introduction The module adopts HID technology the quality of foreign trade no need for any driver the download data comes with the application plug and play Support WIN7 XP 32 bit 64 bit system easy to use We provide application and C secondary development library code no VB code but all DLL files so whether you can operate on VB you need to be familiar with VB friends to try Module application Home intelligent switch control hotel intelligent switch the hotel intelligent electrical control intelligent greenhouse shopping mall intelligent switch company plant intelligent switch Internet cafe timing management karaoke timing control object network industrial equipment test equipment power control street light management intelligent management centralized power management etc Module description 1 The onboard square USB interface stable connection2 Use imported high performance USB control chip3 Using a special relay to drive the chip ULN2803 the relay works more stable4 Use genuine relay5 Military grade PCB board production6 Board power socket and terminal two ways to access the power supply are convenient and flexible When the power is connected the relay can remain set even if the computer is turned off or the USB is removed from the computer 7 Fixed hole size 3mm Note Due to t