Shelly Plus 1 is a small form factor smart switch with potential-free contacts, which allows remote control of electric appliances through a mobile phone, tablet, PC, or home automation system.
Shelly 166841 Plus 1 Bluetooth Wi-Fi Smart Switch User Guide
Shelly plus 1 wiring doorbell - Devices - Homey Community Forum
Shelly Plus 1 - All products - Shop - Shelly
Wiring help Shelly Plus 1 - 12V : r/shellycloud
Shelly Plus 1 WiFi Bluetooth 16A relay
Wiring the Shelly Plus 1 Relay - HomeTechHacker
Shelly® Plus 1PM One Smart Wifi WLAN Funk Schalter Relais Schaltaktor max 16A mit Leistungsmessfunktion
Shelly Plus 1 UL Rated - B2B - Blackwire
Shelly Plus 1 flashing and setup guide/ tutorial - ESPHome - Home Assistant Community