Hi, I have installed many of these cbi switches... If it shows "offline" on your app then there is either no internet or there is no power... If your geyser is on your non essential side during loadshedding then your device will be offline. The automation side pretty good as you can make a lot of "if this" "then that" programs. Comes in handy when you want to control multiple devices during certain weather conditions or loadshedding. If you just want to use it to add a timer to your geyser then there are cheaper options