Shelly Plus i4 allows you to manually activate or deactivate any created scene, run synchronized actions, or execute complex trigger scenarios. Enhanced with an extremely fast processor, Shelly Plus i4 will immediately command the execution and notification of various actions. You can use Shelly Plus i4 to control other connected Shelly relays, sensors, or HTTP and MQTT-controlled devices. Small enough to fit behind every wall switch, Shelly Plus i4 can control the action of four inputs. Shelly Plus-Series devices pack an extremely fast processor, quicker connectivity, improved integration, and enhanced safety! You can now add devices easily via Bluetooth connection, using the Shelly Cloud App. Shelly Plus line supports TLS encryption and has an improved shell for standardized support for external sensor addons.