Shelly, just released a new line of smart relays called Shelly Plus 1 & Shelly Plus 1PM which are improved versions of their best sellers relays until now.
Shelly support group (English Version), Hi! Any problems with new SW for shelly 1PM
Shelly Plus 1PM — ameriDroid
Shelly Plus 1 UL, WiFi & Bluetooth Smart Relay Switch, Home Automation
Shelly Plus 1 device - Installation video
What's so special about Shelly Plus (Shelly 1/1PM/2PM/i4/WS Plus) - NotEnoughTech
Does Shelly 1 I/O circuit isolated from L/N? : r/homeautomation
Shelly Plus Mini Case plus1, Plus 1 PM, Plus PM
What's so special about Shelly Plus (Shelly 1/1PM/2PM/i4/WS Plus) - NotEnoughTech
Are Shelly Plus 1 & Shelly Plus 1PM better than the old Shelly relays - Kiril Peyanski's Blog