A smart bulb that works with the eWelink app
The Sonoff lightbulbs are very affordable and provide you with the basic functionality that a smart home needs. If the budget is tight and you don’t need all bells and whistles of the more expensive lights, Sonoff lightbulbs will do the job just fine. The prices start from $9.90 for the (plastic, White + color temperature) B02 B A60 and $12.90 for the fancy, pear-shaped B02-F-ST64 (glass, retro look, White + color temperature). As far as connected lights go, the prices are very attractive and Sonoff lightbulbs indeed are as inexpensive as you can get.
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Review: Sonoff GK-200MP2-B a Wi-Fi and Lan enabled Wireless IP Security Camera
You probably know the Sonoff brand for smart home electronics like the POW R2 or the Sonoff Basic switches, but they also released a security camera, the Sonoff GK-200MP2-B. I decided to try it out and made an in-depth review so you can make the right decision. Considering this is Sonoff, a well-known brand for robust electronics. I expect a good working, premium product that just works especially since to use the Sonoff GK200MP2-B, you need the eWeLink application which integrates very well with other Sonoff devices.
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How to monitor the power usage of devices using a Sonoff Pow R2
Sonoff Pow R2 is a 16A WiFi smart light switch that allows you to remotely manage and control your appliances and monitor your home energy usage. The WiFi light switch works like a power monitor, which allows you to keep track of 99% accurate real-time current, voltage and power on your app.
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Sonoff SNZB-02 Zigbee Temperature & Humidity Sensor
Enclosed in the same shell, SNZB-02 Zigbee temperature & Humidity sensor reports back every couple of minutes. The sensor is powered by CR2450 3V battery. The extra capacity means that the sensor will last a really long time. I have a heater connected to eWeLink app and, once I added a hub (absolutely required) this thing has performed well. The heater is controlled within +- 1°C. That's another thing, eWeLink only provides temperature readings in °C with no option for °F. I'm thinking about placing another sensor on the outside of the window so that I can control based on outdoor temperature as well.
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