2-pipe and 4-pipe compatibility 3-speed fan control with automatic speed selection based on the difference between ambient and set temperaturesSeasonal changeover based on pipe temp inputAutomatic changeover based on set temperatureExternal temperature sensor inputSetback contact inputRelative humidity sensorPipe flush for proper pipe sensingZigBee based protocolAutomatic power selection for line powered modelPush-button terminals on low voltage modelTwo models:ST100ZB Line Power Fan Coil ThermostatST101ZB Low Voltage Fan Coil ThermostatIntuitive controls for ease of useSeasonal and automatic changeover keeps rooms comfortableStylish contemporary design fits any décorControl the system from anywhere using smartphones, tablets, or computers when connected to a cloud serviceDrop-in replacement for 2-pipe and 4-pipe systems for ease of installation in apartments, condos, hotels, etc.Easily manage large deployments for commercial and hospitality projects using the Salus back office service