SONOFF POWR320D Elite 20A WiFi Smart WiFi Wireless Light Switch with Energy Monitoring, Universal DIY Module for Smart Home Automation, Works with Amazon Alexa & Google Home, No Hub Required

I purchased this Sonoff Power Monitor on a hunch as i couldn't find any information on it to see if it would work in a bidirectional way - ie to monitor wattage going in rather than out. I have a few sonoff products around my home and always find them to be great pieces of technology that work just how they are suppose too. You need to have the eWelink app installed to get the most out of these device, the app is free and easy to download. Connecting up this device was a breeze there are very decent quality connectors for you Live and Load inputs, and installation only took around 5 mins. Unfortunately as with all sonoff products i own there is no earth connector so i had to make my own. Once powered up i was extremely pleased to see that it was indeed bidirectional and measured the wattage and ampage coming in from my solar array. Checking the app i was able to watch the wattage from the panels increase as more sunlight hit the panels. The only thing that didn't work was the wattage as this displayed the grid wattage rather than the solar voltage, but Watts and Amps worked great. Remote control of the device was also great, i was able to switch on and off the mains portion of the device without issue from the device and the app. For standard appliance use, you can not go wrong with this energy monitor - it seems to be very accurate and will feed the data directly into the app, or you can just look at the LCD display - i do wish there was a backlight on the display as it was at times hard to read. Love this device! Recommended product! I hope that you found my review helpful.

Great

La app funciona excelente, no falla. Lo uso para programar mi boiler electrico y asi prenederlo solamente cuando me baño. Lleva un registro de consumo excelente.

Vorteilhaftes und recht einfach zu installierender Stromzähler. Ich benutze ihn, installiert in der Stromleitung vom Balkonkraftwerk zur Einspeisesteckdose um regelmäßig den Solarertrag zu messen. Da er direkt in der Zuleitung sitzt ist die Messung recht genau, auch wenn es sich natürlich nicht um einen geeichten Zähler zu Abrechnungszwecken handelt. Gegenüber den Apps, die zu den Wechselrichtern gehören, erfolgt die Messung direkt und ständig, während die Apps meist über die Server der Betreiber die Daten anbieten. Bei Ausfällen der Server oder auch des WLAN lassen sich so Fehlangaben in den Apps im Gegensatz zu diesem Zähler manchmal nicht vermeiden. Die Angaben der Apps der Solarangabe und dieses Gerätes unterscheiden sich geringfügig.

Using this to schedule power on/off my EV car charger as I plug in the charger in evening with a auto cut off early night and then switching back on in morning. Does perfect job and power consumption reading is very accurate and precise. Definitely a recommended product for home use. Planning to buy another one for my AC as well. Price could have been slightly cheaper, but surely no complaints on the useability.