The Sonoff POW R320D works independently and would be the first device from your Circuit Breaker, then the Geyser Wize. The POW will work great as a Energy Monitoring solution also as a timer and remote on off. The Geyser wise would just control the Temp.
Hi, Sonoff temperature control unit is the THR320D. Please just make sure your electrician/plumber does not remove the thermostat. Please see the link below. sonoffafrica.co.za/product/sonoff-th-elite-20amp-temperature-and-humidity-switch-sensors-sold-separately/
Hi How are you? Sorry for the delayed response. I believe that the pully system would not work as is out the box. As the curtains would have too much resistance. If there were clips between grommets, there would be a higher chance of success.
Hi, You can definitely and a change over and move the geyser to the Inverter Load/UPS port. If it was already on essential loads, you could certainly turn it on.
Hi, How are you? YES it definitely can, it is designed as a load shedding trigger device to turn devices off as load sheading starts and to automatically recover them and power returns.