Please watch: “How to control an inverter/UPS through a mobile application? | Su-Kam Falcon Plus”
https://www.youtube.com/watch?v=lpBu3MjIsHQ
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Su-Kam’s Solar Homelighting System can sense whether it is day or night. When solar panels do not get any sun rays, it assumes that it is night time and switched the DC light on.
Post time: Feb-15-2017