This is an introduction of R242 - RS232 Relay-Daq Board from iknowvations.in. This board is very useful for computer automation. It connects with serial - RS232 port of your computer and can be used to operate 4 on board relays to switch on/off any electrical gadgets and also you can use various kind of sensors like Temperature, Pressure, Magnetic etc to monitor real world situations.<br />You can make many projects using this R242 - RS232 Relay-Daq Board. For more such products & videos please visit http://iknowvations.in