BASI’s HVAC humidity probe BRHW200 has the same features as the BRHV100 model but with RS485 output and is designed specially for multi-point measurement and data acquisition in a network with up to 32 devices. Using a thin-film sensor, whose capacitance varies proportionally to medium relative humidity, and a thin-film temperature sensor, the probe measures relative humidity and temperature of air and non-aggressive gases at atmospheric pressure, and transforms it into information sent via standard RS485 interface with ACSII protocol. BRHW200 is equipped with a convenient plastic enclosure with IP65 and two PG7 cable glands for easy and fast network building. This model can be optionally equipped with a stainless steel sintered filter for sensor protection. Thanks to its robust design, network communication potential, and low price, the BRHW200 transmitter can be widely used in HVAC building automation and warehouse control systems.