ShellyPro 4PM | Wi-Fi & LAN, 4-Channel Smart Relay with Power Metering | Home Automation | Compatible with Alexa & Google Home | iOS Android App| Remote Appliances Control and Monitoring

Very cool unit. I'm using it to control the lighting in my farm shop, the lights on the exterior of the shop, and also to trigger my electric door strike for the walk-through door and its programmed to turn the lights on if they're not already on. The coolest part is I have the fourth channel controlling a 60 amp contact closure relay to send power to my fuel barrels in my farm yard. This way no one can steal fuel All I have to do is open the app press the button and I have it programmed to shut off after 30 minutes. It works so slick! I really wish the unit had normally closed and/or dry contacts. Every output controls an additional relay because I'm either controlling 220 volts or the amperage exceeds the rating of the contacts. So the wattage function of the unit is useless in my situation. Outside of that, it works every time. I've since bought another one I'm going to wire it up to control my three-button overhead commercial door. The app to control this is very solid. If you're not patient or tech-minded you're going to struggle with this unit but stick with it and you'll get it. I'm completely hooked on these Shelly devices. I'm thinking of other ways I can use them like a timer to turn off my battery chargers for my Milwaukee tools so they don't blow up overnight. Currently wiring up exterior lights of my home on timers within the Shelly. My wife just rolls her eyes but I'm having fun! :)

Amazing product. Client side development. I will be buying more.

I bought this to replace my pool timer. I use one side to turn on the pump and the other to turn on the Chlorine generator. WIFI connection works great. I turn off the breaker to backwash the pool, the pump and generator will start back up when I turn back on.

These shellys are a game changer when it comes to home automation. I use them to turn on and off my home theater subs when they are not in use and this Shelly has made it so easy to do it with its multiple connection types and easy to use api, anyone can do it!

I limit the charge current to 10 A 120v home wall outlet to not overload my wall circuit panel. I want to trickle charge my bank of lithium battery’s when the sun don’t shine. This device works well and easy to wire and setup. There is a very nice Shelly app to manually kick on the charge when I feel it’s needed. I can automate the process on a hourly basis or I can learn a bit of programming and logically kick on the charge if the battery’s get low.

As above

This is a cool little relay! I used it to automate my pool controls (pump on, valve mode control and waterfall). Super simple to setup and set the time of day schedules. Its been working flawlessly.

The 4PM is used in my attic, managing the attic, bathroom, dryer fans, lights, and environmental sensors. I am using it to see if running the various fans is cost-effective and if the attic fan has any effect on the temperature in the house and the cost of cooling or heating.It was easy to set up and configure; it was quickly discovered by my home automation solution. Din rail makes it easy to put in an enclosure.