This is the Hive Active Heating Smart Thermostat Combi Boiler set, which includes a hub, receiver, and thermostat. It is a smart heating system that can be controlled through a mobile app, allowing you to adjust the temperature of your boiler from anywhere. The system is compatible with Amazon Alexa and Google Assistant, allowing you to control it using just your voice. With this system, you can set up a schedule for your boiler to turn on and off, ensuring that your home is always at the right temperature at the right time. The thermostat is accurate and can detect temperature changes quickly, allowing you to make adjustments as needed. This is a great system for anyone looking to upgrade their heating system and make it more efficient.