https://www.topazsystems.com/lcd/t-lbk57gc.html
https://topazsystems.com/sdks/sigweb.html
https://www.topazsystems.com/sdks/sigplusextlite.html
http://localhost:47289/SigWeb/LcdRefresh/0,0,0,640,480 400 (Bad Request)
SigWebTablet.js:121 POST http://tablet.sigwebtablet.com:47289/SigWeb/LcdRefresh/0,0,0,640,480 400 (Bad Request)
https://topazsystems.com/sdks/sigweb.html
https://www.sigplusweb.com/SigWebColor5.7Demo.htm https://www.sigplusweb.com/sigwebtablet_demo.html