High Compatibility: ZigBee 3.0 smart products are well compatible with ZigBee gateway hub, allowing you to customize your systems according to your individual needs and security requirements, making it possible to control all your home appliances in one app. Stable and reliable: This product is more stable to create a smart home system and can be connected up to 30 smart home devices. Energy Saving: Used with a smart radiator thermostat (not included), heat your home to the right temperature only when needed with the heating schedule to save energy and costs on your energy. Easy to Install: The smart gateway hub is designed with no wiring needed and extremely fast simple WiFi setup, no professional technical skills needed, ideal for green fingers and professionals. Mini size: 7.1 x 6.8 x 4.0 cm, mini shape, elegant craftsmanship, and can match the family style.