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JUMO hydroTRANS S20

Article number: 802108
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JUMO hydroTRANS S20 humidity and temperature transmitter, oblique view, white wall mounting with LCD display Temperature Humidity CO2
JUMO hydroTRANS S20 front view, LCD displays temperature, humidity, CO2, robust wall-mounted device
JUMO hydroTRANS S20 humidity and temperature transmitter, oblique view, white wall mounting with LCD display Temperature Humidity CO2
JUMO hydroTRANS S20 front view, LCD displays temperature, humidity, CO2, robust wall-mounted device

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Article number: 802108
GTIN: 4068823016727
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Product information "JUMO hydroTRANS S20 "

Multifunctional wall-mounted transmitter from JUMO for monitoring relative humidity, temperature, and CO2 concentration for wall mounting

JUMO hydroTRANS S20 – Humidity, temperature, and CO₂ transmitter with display Type: 907042/12-0-17-009/994

With this version, you receive a multifunctional wall-mounted transmitter for monitoring indoor air quality with integrated display. It combines temperature, humidity, and CO₂ measurement with configurable output and is suitable for modern building automation and ventilation control.

Technical data

  • Basic type extension: RH-T-CO2
  • Version: Standard
  • Measuring range: 0 … 95 % RH / -10 … +60 °C / 10,000 ppm CO₂
  • Measured parameters: CO₂, relative humidity, temperature
  • Output: 4–20 mA / 0–10 V (combined output configurable)
  • Type addition: with integrated display

Advantages and technical features of the JUMO hydroTRANS S20

  • Combined measurement of CO₂, temperature, and relative humidity
  • Integrated display for direct on-site indication
  • Flexible combined output (4–20 mA / 0–10 V configurable)
  • CO₂ measuring range up to 10,000 ppm for indoor air monitoring
  • Suitable for indoor areas and protected outdoor environments
  • Easy wall mounting for quick installation
  • Robust design for continuous monitoring
  • One device for three measured variables (space saving)

The measuring range includes 0 to 95 % relative humidity, temperatures from -10 to +60 °C, and up to 10,000 ppm CO₂. This makes the device suitable for applications where, in addition to classic climate data, air quality through carbon dioxide monitoring is required.

The measured values are output via a configurable combined output (4–20 mA or 0–10 V). This allows the transmitter to be flexibly integrated into various building and automation systems.

This variant additionally features an integrated display that enables direct reading of the measured values on site. This simplifies monitoring and reduces the need for external readout devices.

The multisensor technology enables simultaneous acquisition of all three measured variables in one device. Optionally, a plastic sinter filter can be used to protect the sensor from dust and particles, thereby improving measurement stability.

Typical areas of application

  • Building management and smart building systems
  • Ventilation and air conditioning systems with CO₂ control
  • Indoor air monitoring in offices and public buildings
  • Schools, lounges, and meeting rooms
  • Storage and production areas
  • Energy-optimized ventilation systems
Ordering details – JUMO hydroTRANS S20 Humidity and Temperature Transmitter
Pos. Feature Code Description
(1) Basic type 907042 JUMO hydroTRANS S20 – Humidity and Temperature Transmitter with optional CO2 module for wall mounting
(2) Basic type extension 11 RH – T
12 RH – T – CO2
(3) Version 0 Standard
(4) Measuring range 15 0 to 100 % RH / -40 to +80 °C
17 0 to 95 % RH / -10 to +60 °C / 10,000 ppm CO2
(5) Output 009 4 to 20 mA (factory setting) / 0 to 10 V combined output, configurable
530 RS485 Modbus
535 SPE with PoDL (Modbus TCP Slave) a
(6) Extra code 000 None
775 DAkkS (DKD) calibration (service), specify calibration points in plain text
994 Integrated display
Note a: Output 535 – SPE with PoDL (Modbus TCP Slave) is available only in combination with the CO2 module and an integrated display.
Ordering key – JUMO hydroTRANS S20
Designation (1) (2) (3) (4) (5) (6)
Ordering key   /   -   -   -   / , …a
Ordering example 907042 / 12 - 0 - 17 - 009 / 994
Note a: Multiple extra codes are listed consecutively and separated by commas.

Frequently Asked Questions

Yes, the integrated display shows CO₂, temperature, and humidity directly.

For rooms with many people, such as offices, schools, or meeting rooms.

Yes, the measured values can be used to control ventilation systems.

It measures CO₂, humidity, and temperature simultaneously.

No, the device is simply mounted on the wall.

Yes, easy integration is possible via the configurable output.

Other attributes

Ausgang 4...20 mA / 0...10 V (Kombiausgang konfiguriert)
Customs tariff number 90258040
Messbereich (Temperatur & relative Feuchte) 0...95% rF / -10°C...+60°C
Messparameter Kohlenstoffdioxid (CO2), Relative Feuchte, Temperatur
Downloads:
Technical data:
Electrical safety
Requirements standard / specification
The device must be connected to a circuit that meets the requirements for “energy-limited circuits”. DIN EN IEC 61010-1:2020
Electrical specifications – device with analogue output
Power supply DC 24 V, -33 % / +33 %, SELV, PELV
power consumption ≤ 2,4 W
overvoltage category II
Degree of contamination 2
protection class DIN EN 61140, Class III (safety extra-low voltage)
electrical connection
connection elements spring-loaded terminal
connecting cable
  • cross-sectional area of the cable: AWG 28 to AWG 14
  • without ferrule: 0,2 bis 1,5 mm²
  • with ferrule: 0,25 bis 1,5 mm²
stripping length
  • without ferrule: 8 mm
  • with ferrule: 10 mm
temperature resistance ≥ 80 °C
Electrical data – device with RS485
power supply DC 24 V, -58 % / +33 %, SELV, PELV
power consumption ≤ 2,4 W
overvoltage category II
pollution degree 2
protection class DIN EN 61140, class III (safety extra-low voltage)
electrical connection
connection elements spring-cage terminal
connecting cable
  • cable cross-section: AWG 28 to AWG 14
  • without ferrule: 0,2 to 1,5 mm²
  • with ferrule: 0,25 to 1,5 mm²
stripping length
  • without ferrule: 8 mm
  • with ferrule: 10 mm
temperature resistance ≥ 80 °C
Electrical data – device with SPE
property value
supply voltage DC 18 to 30 V, PELV
current draw ≤ 100 mA
power consumption ≤ 1,8 W
overvoltage category II
pollution degree 2
protection class DIN EN 61140, class III (Ssafety extra-low voltage)
PoDL-class class 11, IEEE 802.3cg
PoDL classification SCCP- or Forced-Mode
electrical connection
connection element M12 connector
M12 connector IEC 63171-5
design 2-pin, shielded
ingress protection (IP rating) IP67
connecting cable IEC 61156-13, IEC 61156-14
cable design 2-core, copper, shielded
bandwidth ≥ 20 MHz
cable length ≤ 500 m (AWG22 at DC 24 V)
DC loop resistance < 59 Ω
temperature resistance ≥ 80 °C
Inputs – measured values – relative humidity
property value
measuring range
  • Standard: 0 to 100 % RH
  • with CO₂ module: 0 to 95 % RH
measurement accuracy
  • typical: ±2,0 % RH
  • max.: ±2,5 % RH
sampling rate 1 s
Inputs – temperature
Propertyt Value
measuring range
  • Standard: -40 to +80 °C
  • with CO₂ module: -10 to +60 °C
measurement accuracy
  • Typical: ±0,2 °C
  • Maximum: ±0,4 °C
sampling rate 1 s
Inputs – carbon dioxide (CO₂)
property Value
General information
Availability Optional for devices with an analogue output and RS485,
factory-set for devices with SPE
measurement range 400 to 10 000 ppm
measurement accuracy & reference conditions
measurement accuracy ±(50 ppm + 5 % of the measured value)
ambient temperature 25 °C
air pressure 1013 hPa
humidity 50 % RH
measuring range 400 to 1 000 ppm
sampling rate 30 s
Outputs – device with analogue output (current output signal)
property Value
current output
signal range 4 to 20 mA
output signal limits 0 to 22 mA
measurement accuracy ≤ ±0,05 % relative to the end of the signal range (20 mA)
temperature influence ±50 ppm/K
load influence ≤ ±0,02 % per 100 Ω
load ≤ 500 Ω
Outputs – voltage output
property Value
voltage output
signal range 0 to 10 V
output signal limits 0 to 11 V
accuracy ≤ ±0,05 % relative to the end of the signal range (10 V)
temperature influence 50 ppm/K
load influence ≤ ±15 mV
load ≥ 10 kΩ
Interfaces – USB
property specification
function transfer of configuration data and device information
communication via end device and setup software
transmission standard USB 2.0
connector type Micro-B
current consumption ≤ 500 mA
cable length ≤ 5 m
Interfaces – RS485
property specification
function Transfer of process data, configuration data and device information
communication via Modbus master
galvanic isolation functional
data transmission serial
transmission protocol Modbus RTU
data format
  • 8-1-nonea
  • 8-1-odd
  • 8-1-just
  • 8-2-none
a = factory setting
data transmission rate
  • 9600 Baud
  • 19200 Baud
  • 38400 Baud (factory setting)
  • 57600 Baud
  • 115200 Baud
minimum response time 0 to 500 ms
device address 1 to 254
Interfaces – SPE
property specification
function Transmission of process data, configuration data and device information, power supply via PoDL
communication Via the terminal and the JUMO Cloud, Modbus master
SPE standard 10BASE-T1L
transmission protocol Modbus TCP, integrated JUMO Cloud gateway
data transmission rate 10 Mbit/s
display
property specification
Type TFT-Display
Size Display Area: 35,04 mm × 28,03 mm
Screen diagonal: 1,77″
resolution 128 × 160 px RGB
brightness 11 Steps (configurable)
environmental influences
property specification
Permissible ambient temperature Permissible ambient temperature: -40 to +80 °C
With CO₂-Modul: -10 to +60 °C
With display: -20 to +60 °C
Permissible storage temperature Permissible storage temperature: -40 to +80 °C
With CO₂ module: -30 to +70 °C
With display unit: -30 to +60 °C
Degree of protection IP65 (DIN EN 60529)
Max. installation altitude 5300 m above sea level
Climatic conditions / climatic class DIN EN IEC 60721-3-3 / 3K24
Relative humidity ≤ 100 % (95 % with CO₂ module), non-condensing
Electromagnetic compatibility (EMC) DIN EN IEC 61326-2-3:2022
EMC – Emissions Class Ba
EMC – Immunity Industrial requirements
vibrationb vibration: DIN EN 60068-2-6
Deflection: 0,15 mm from 10 to 58,1 Hz
Acceleration: 20 m/s² from 58,1 to 150 Hz
Shockb Shock resistance according to DIN EN 60068-2-27
Peak acceleration: 150 m/s²
Shock duration: 11 ms
a The product is suitable for industrial use as well as for domestic and small business use.
b The CO₂ module is sensitive to vibrations. Due to its design, vibrations may affect the measurement result.
Mechanical properties
property specification
Materials of housing / display cover PC / PMMA
Weight Approx. 200 g
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