1、MULTIPLE FUNCTIONS: The temperature controller is a fully automatic intelligent control system with automatic heating and cooling conversion and defrosting function. 2、WITH DUAL SENSOR: This smart thermostat has dual sensors, cooling by compressor, heating by compressor and 4 way valve, defrosting by compressor and 4 way valve. 3、FOR SEAFOOD POOL: Professionally developed control system for seafood pool refrigeration and heating integrated machine, with strong practicability. 4、HIGH PERFORMANCE: This multifunction thermostat has a temperature control range of 2-80℃, with high resolution and accuracy, stable and reliable in operation. 5、EASY TO CONNECT: The temperature controller has a compact structure and clear display, and is equipped with 2pcs probe cables for easy installation and connection.