Sonoff 4CH Pro Review

I received a Sonoff 4CH Pro the other day and have had a fun time playing with it. It is similar to the original Sonoff 4CH in the number of outputs that it supports, but differs in the fact that the relays are dry contact relays. This of course means that varying types of devices can be connected to the relay as each channel essentially has an input and output power terminal.

There are limitations on what the device supports. Itead advertises the voltage range as 90-250v AC(50/60Hz) / 5-24v DC and the max power as 10A/channel. This should be able to cover a wide range of projects and uses out there.

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Sonoff TH – Temperature & Humidity Sensing Relay on the Cheap

I have been following the Sonoff devices ever since they released the original 10 amp 2 wire wifi relay several months back. Itead, the company behind Sonoff’s stuff, has gotten quite the reputation in the hacker community for making low cost devices that are easily updated with custom firmware. There are several Sonoff devices that I have merely taken out of the shipping box, tore open, and began to tinker with before even testing the Itead firmware. That’s how community friendly they are.

The Sonoff TH, I believe, is a great product to add temperature sensing to multiple rooms in your home. The fact that it has a low price tag makes a whole home deployment much more palatable. Other than that, how does the Sonoff TH stack up against the rest?

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SmartLife Devices WiFi & SmartThings Configuration

WiFi Configuration

After flashing the device and attaching standard power to it, the device should start broadcasting a wifi SSID. The SSID will match the device type followed by a period and then some characters representing the devices MAC address. For example, the Sonoff TH would look like SonoffTH.3d8883d0f90f and the SmartLife H801 would look like esprgbw.5d7d404fe294. You then connect to the AP with the password: configme.

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Sonoff Wifi Switch & SmartThings

This is a wifi relay that can be found for as low as $5. I have had a few of these up and running for a little while now and they are working great. They can even support instant status updates (notify SmartThings on state change) when the switch is toggled by pressing the button, and are really quite simple to setup.


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