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JUMO hydroTRANS S20

Article number: 802106
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Product information "JUMO hydroTRANS S20 "

JUMO hydro TRANS S20 - Humidity and temperature transmitter with optional wall-mounted CO2 module

Typ: 907042/11-0-15-530/994

  • Basic type extension: RH-T
  • Version: Standard
  • Measuring range: 0 ... 100 % rH / -40 ... +80°C
  • Output: RS-485 Modbus
  • Extra code: Integrated display
  • Measuring parameters: Temperature, relative humidity, carbon dioxide (CO2) optional
  • Interfaces: USB, RS485, Sigle Pair Ethernet (SPE)
  • Robustness
  • Easy to install
  • Multi-sensor
  • Optional plastic sintered filter

The humidity and temperature transducer monitors the quality of the ambient air and can be wall-mounted both indoors and in protected outdoor areas.

Areas of application

  • Climate monitoring
  • Ventilation systems
  • Building management
  • Storage rooms 

Other attributes

Ausgang RS485 Modbus
Customs tariff number 90258040
Messbereich (Temperatur & relative Feuchte) 0...100% rF / -40°C...+80°C
Messparameter Relative Feuchte, Temperatur
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