[Stable]Relying on stable RF wireless technology, the thermostat is paired with the receiver, the signal is stable, and the pairing speed is fast. [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. [Handwheel Knob]Knob type control temperature setting is more convenient, flexible, and more experience. [Easy to Install]RF transmitter desktop design, compatible with wall-mounted design, installation is very simple, and flexible. Description: High-quality smart boiler thermostat including a transmitter (free-standing) and receiver (wall mounting) set with a transmission range of 200m. Touch button operation is more flexible, and more experience. And you can also remotely control the thermostat by an app from your phone. Support antifreeze function, child lock function, and humidity function. Features: [Stable]Relying on stable RF wireless technology, the thermostat is paired with the receiver, the signal is stable, and the pairing speed is fast. [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. [Handwheel Knob]Knob type control temperature setting is more convenient, flexible, and more experience. [Easy to Install]RF transmitter desktop design, compatible with wall-mounted design, installation is very simple, and flexible. Specifications: Color: White; Black (Optional) Type: Boiler Design: Wi-Fi Material: PC Power Supply: 2*AA Batteries(Not Included); USB Wireless Frequency: 433MHz(FSK) Transmission distance: