SONOFF
One of the brands with the most affordable devices for home automation, its communication protocol is via Wi-Fi and they are compatible with Alexa and Google Home.
The range Sonoff es a simple and cheap way to home automation. The normal options give us an almost infinite number of combinations, especially if we take into account the timer function and the scenes.
In addition to the usual and well-known relays, we have a large number of lesser known devices, such as switches, outlets, a sensor station, and an RF gateway that allows us to add many more sensors. Although we miss a thermostat and an IR gateway.
For the most daring users, devices can be reprogrammed with one of the firmware developed by the community, and integrate it with other Open Source developments (Home Assistant, your MQTT server).
Lastly, we can also use these devices as a programmable processor(normally the relay) and include it in our electronics and robotics project.
Int.-Pul. Wifi
SONOFF DUALR3 SONOFF DUALR3 DIY Mini Wifi Dual Relay Module with Two-Way Power Metering Smart Home 2 Gang/Way Switch Allows you to control two light points with traditional mechanisms, and also supports switched installations "Turn on or off from multiple points". It can also be installed to control the motor of the [...]
Gateway
SONOFF ZBBridge Sonoff ZBbridge, Itead's new Hub for Zigbee, compatible with the Ewelink application and all Zigbee Alliance devices, another big step for Sonoff in the Zigbee protocol. Several Zigbee devices are already available, designed to connect to this hub. Easy to use and integrated with all Zigbee devices [...]
Int.-Pul. Wifi
SONOFF RE5V1C WiFi 5VDC input, nano size and dry contact output differentiate it from the product SONOFF Traditionally, this product is a wireless switch that supports automatic open/close mode. Users can add the device to the eWeLink app to remotely control connected home appliances or devices. SONOFF RE5V1C [...]
Switch
sonoff ifan02 Sonoff iFan02 turns your normal fan into a smart one with this module, you can control the speed and light if you have it from the mobile application or the Alexa or Google assistants. Compatible with component Sonoff for Home Assistant. Product description: Sonoff iFan02 is a fan controller for [...]