your partner in sensor technology. Modular Humidity and Temperature Sensor for Demanding Climate Control

HTS401 Modular Humidity and Temperature Sensor for Demanding Climate Control The HTS401 humidity (RH) and temperature (T) sensor is the perfect balance of precision, durability, and simplicity for reliable climate control. With a modular design, it keeps operations running smoothly while reducing downtime and maintenance costs. From energy-efficient HVAC systems to modern data centres and industrial facilities, the device ensures the optimal environment. Reliable in Any Environment Built for endurance, the HTS401 in IP65 / NEMA 4(X)-rated enclosure features an E+E sensing element with proprietary...

HTS401 wall mount (Type T1), HTS401 duct mount (Type T2), available with available with polycarbonate enclosure die-cast aluminium or polycarbonate enclosure HTS401 with remote probe HTS401P (Type T3), HTS401M rapidX intelligent exchangeable sensing module available with polycarbonate enclosure www.epluse.com v1.0 / All rights reserved | 3

FeaturesMeasurement performance ■ RH /T accuracy up to ±0.95 %RH and +/- 0.1 °C (0.18 °F) ■ Condensation Guard (CG) Display ■ All RH related physical quantities ■ Configurable display layout ■ Freely selectable measurands Bayonet Screws ■ Open/close with a % rotation Knockout for conduit fitting (US) External mounting holes ■ Mounting with closed cover ■ Electronics protected against construction site pollution ■ Easy and fast mounting Smooth cover surface ■ No accumulation of dust in protruding edges E+EEnclosure Electronics on the backside of the PCB ■ Optimum protection against mechanical...

Features Protective Sensor Coating The E+E proprietary sensor coating is a protective layer applied to the active surface of the sensing element. The coating substantially extends sensor lifetime and ensures optimal measurement performance in corrosive environment (salts, offshore applications). Additionally, it improves the sensors’ long term stability in dusty, dirty or oily applications by preventing stray impedance caused by deposits on the active sensor surface. Encapsulated connections and sealed solder pads provide optimal protection, ensuring operational safety and reducing maintenance...

Features Accredited Traceable Calibration Certificate Internationally recognised certificates for the calibration of measuring instruments from accredited laboratories document the traceability of the measurements to the International System of Units (SI). The E+E Elektronik calibration laboratory offers two levels of traceable calibrations. ▪ As a Designated Institute (DI) of the Republic of Austria, the E+E calibration laboratory maintains Austria’s national measurement standards for humidity, dew point temperature, air velocity and CO2. This authorises the E+E calibration laboratory to issue...

Dimensions Values in mm (inch) Type T1 UIT COND FOR TION A L L A INST 101 Stainless steel Stainless steel Metal grid 1) With rapidX sensing module Type T3 (for remote probe) Plastic mounting flange in the scope of supply for types T2 and T3 with polycarbonate enclosure HTS401M sensing module in the scope of supply for types with rapidX technology 11.3 (0.44) 8.6 (0.34) (0.5)

Technical Data Measurands 1) Td accuracy according to RH and T uncertainties, please use the E+E Humidity Caclulator for details.

Technical Data Outputs II = load current Rl = load resistance Two freely selectable and scalable outputs Digital Digital interface Power supply class Ml USA & Canada: Class 2 supply necessary, 1) For display operation with HTS401-xA6 (4 - 20 mA, 2-wire) both outputs must be connected.

Ordering Guide Feature 1) The HTS401P probe and the probe connection cable have to be ordered as separate positions. 2) Not with option HS3 (die-cast aluminium enclosure). 3) Factory setup: For analogue output versions, the display shows the measurands selected for output 1 and output 2. For versions with digital interface, the display shows RH and T. 5) Modbus Map and setup instructions: See User Manual and Modbus Application Note AN0103 at www.epluse.com/hts401.

Measurand CodeFor Output 1 and 2 in the Ordering Guide Measurand (T| PLEASE NOTE No mix of SI/US units allowed.

Order ExampleType T3Position 1: Basic Device HTS401-M1T3A19D2MB2SBL40SBH120

Accessories For further information please refer to the Accessories datasheet.

Company Headquarters & Production Site 4209 Engerwitzdorf | Austria T +43 7235 605-0 F +43 7235 605-8 [email protected] www.epluse.com E+E Elektronik France SARL E+E Elektronik Deutschland GmbH T +49 6171 69411-0 [email protected] E+E Elektronik India Private Limited datasheet_HTS401 | Version v1.0 | 10-2025 © Copyright E+E Elektronik Ges.m.b.H. | All rights reserved. your partner in sensor technology.