Product Description: The Honeywell HST-PB4 is a duct-mount humidity and temperature transmitter designed for HVAC and building automation systems. Its selectable analog outputs allow flexible integration with various control systems. Key Features: ✔ Dual Parameter Measurement - Simultaneous humidity and temperature monitoring ✔ Field-Selectable Outputs - 0-10V or 4-20mA for each parameter ✔ Easy Installation - Pre-configured for duct mounting ✔ Stable Performance - Long-term reliability in HVAC environments Typical Applications: Commercial HVAC systems Air handling units Cleanroom environmental control Data center monitoring