This is a wireless remote control for your PLC. Signals or bits can be controlled via an Android device. The remote has 8 buttons with 3 switch points. Also every buttons has a indicator lamp to display a status from the PLC. On top a text message can be displayed in the upper row.
This application has been checked for viruses and it has been found completely secure. Mark König is the official developer of the app which can be found in the Tools category. Over 5K users downloaded and set up PLC WIFI Remote Control lite and the latest release was on Nov 27, 2013.
According to the latest info, this application is rated 3.6 on Google Play. Get the .apk setup package of PLC WIFI Remote Control lite 1.21 that is free of charge and have a look at users' reviews on Droid Informer. The file size is 255 KB and the app is built for Android 2.2 and higher.