Smart Fan Coil for 4 Pipe System Thermostat WIFI/485 Modbus with Application & Voice Control 3.5 Inch LCD Display Intelligent Programmable Thermostat Child Lock Description: Smart thermostats support energy-saving mode, flexible and convenient. The button & handwheel operation is more flexible, and more experience. And you can also remotely control the thermostat by an app from your phone. Features: [Smart Control]Supports application operation, easier for scheduling programs, set functions, and checks current states by the application.   [Weekly-programmable]Smart thermostat support up to 6 events that can be set separately for each day. [Voice Control]You can use voice control through Home and Amazon Alexa for smart thermostats. [Multifunctional]With a 3.5inch large LCD screen, support weather forecast, frost conservation function, child lock function, etc. [Child Lock]The thermostat cannot be controlled when the child lock is activated so as to avoid misuse by children due to curiosity. Specifications: Type(Optional): Electric Heating 16A(Type 1); Water Heating 3A(Type 2); Boiler 3A(Type 3); Fan Coil for 2 Pipe System(Type 4); Fan Coil for 4 Pipe System(Type 5); Floor Heating & Fan Coil for 2 Pipe System((Type 6)   Color: White   Design: Wi-Fi    Material: PC   Power: 3W Max Voltage: AC100-240V, 50/60Hz Temperature Setting Range: 5-95°C Floor Limited range: 20-90°C Degree of conservation: IP20 Package Size：10.2*9.6*7cm Package Weight: 252g(Type 1); 198g(Type 2); 200g(Type 3); 204g(Type 4); 198g(Type 5); 200g(Type 6) Packing List: 1 * Smart Thermostat 1 * User manual