I am using an 8 way relay IP unit as below.
There is no problem controlling it from Demopad, it uses http: command line eg. (send data to a website) Http://192.168.1.4/30000/01 will open relay 1, if you change the last two digits to 02 it will close that relay. The unit always sends feedback after each command, however I cannot set it up as a device, it will not connect !!
https://www.sainsmart.com/sainsmart-rj4 ... rated.html
Forum to ask for any help
2 posts • Page 1 of 1