Some of the possible uses of this module include Can be controlled by using standard serial console applications or custom applications.Can be powered from USB or external power supply.Relay contacts available on easy to access screw terminals.As easy as using a serial port, no USB knowledge required 4 analog inputs with 10-bit resolution (multiplexed with digital IOs).1 Mechanical Relay with contact rating up to 2A.For power users, this module can be controlled by writing programs in various programming languages. This simplicity allows the use of off-the-shelf Terminal Emulation programs such as Hyper Terminal and PUTTY for controlling the module with a simple set of human-readable commands.
Built-in USB to serial conversion allows the module to be used without any USB specific knowledge. Ease of use and wider operating system compatibility are the primary goals behind this product’s design. Numato Lab’s 1 Channel USB Powered Relay Module is a great product for controlling electrical and electronic devices remotely from a PC or Mobile Device over a USB link.