USER-FRIENDLY MEASURING DEVICES humidity transmitters rht series Wall mount relative humidity transmitters for building automation systems RHT relative humidity transmitters are engineered for building automation systems in the HVAC/R industry. The RHT measures relative humidity (rH), and temperature (T). RHT devices are available with large touchscreen display making configuration of the device quick and easy. RHT series devices include: • Separate field configurable output for each measurement parameter (rH, T). • Proportional output options including: voltage (0-10 V, 2-10 V) and current (4-20 mA). RHT series device options offer: • 2” x 3” touchscreen display • Field configurable relay for any of the two parameters • Modbus configuration RHT series devices are commonly used to monitor: • humidity and temperature levels in offices, public spaces, hospitals, meeting rooms and classrooms • humidity and temperature in various commercial applications • humidity and temperature in HVAC/R environment Copyright HK Instruments 2017 www.hkinstruments.fi Datasheet Version 6.0 2017

Physical Dimensions: Case: 99 x 90 x 32 mm Weight: 150 g Mounting: 3 screw holes slotted, 3.8 mm Materials: Case: ABS Protection standard: IP20 Display (Optional) Touchscreen Size: 77.4 x 52.4 mm Electrical connections: Power supply: 5-screw terminal block (24 V, GND, rH, T, NC) 0.2-1.5 mm2 (12-24 AWG) Relay out: 3-screw terminal block (NC, COM, NO) 0.2-1.5 mm2 (12-24 AWG) Performance Measurement ranges: Temperature: 0...50 °C Relative humidity: 0-100 % Accuracy: Temperature: <0.5 °C Relative humidity: ±2...3 % at 0...50 °C and 10-90 % rH Total error band includes accuracy, hysteresis and temperature...