Item No. 1201-1211-3201-020
EAN 4 251325 610153

Quality product for HVAC sector, accuracy ± 2 %
calibratable dew point control switch HYGRASGARD® TW - Modbus incl. strap/ with detached sensor head, with Modbus connection, terminal box housing made of impact-resistant plastic, housing cover with quick-locking screws, with/ without optional display.
The universal surface-contact sensor is used to detect various parameters in humidity measurement. The relative humidity and temperature of the ambient air are measured. These measurands are used to calculate various parameters internally. The Modbus can be used to retrieve the following parameters: relative humidity [% r. H.], absolute humidity [g/ m³], mixture ratio [g/ kg], dew-point temperature [°C], enthalpy [kJ/ kg] (ignoring atmospheric air pressure) and ambient temperature [°C].
It is used in non-aggressive, dust-free environments, in the refrigeration, air conditioning and clean room technology, hotels, engineering rooms, meeting and conference facilities. The measuring transducers are designed for exact detection of temperature and humidity. A digital, long-term stable sensor is used as a measuring element for humidity and temperature measurement. Fine adjustment by the user is possible. The sensor is suitable for ceiling and duct installation or for integration in equipment.

198,90 € net
Voltage supply 24 V AC (± 20 %) and
15…36 V DC
Power consumption < 1,0 VA/ 24 V DC
< 2,2 VA/ 24 V AC
Deviation of humidity typical ± 2.0 % r. H. (20…80 % r. H. ); at + 25 °C, otherwise ± 3.0 % r. H.
Temperature deviation typically ± 0.2 K at +25 °C
Sensor digital humidity sensor
with integrated temperature sensor,

low hysteresis, high long-term stability
Sensor protection membrane filter
Measuring range 0...100 % r.H. (humidity)
– 35...+80 °C (temperature)
Zero point offset ± 10 % r.H. (humidity)
± 10 °C (temperature)
Ambient temperature –30...+70 °C
Medium clean air and
non-aggressive, non-combustible gases
Bus protocol Modbus (RTU mode),
address range 0...247 selectable
Signal filtering 4 s / 32 s
Process connection endless metal strap with metal tightener,
300 mm, for pipes up to 3 ''
(included in scope of delivery)
Housing plastic, UV-stabilised,
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
Housing dimensions 72 x 64 x 43.3 mm (Tyr 1 with Display)
Cable gland 2x M 12 x 1.5 (Y-adapter); with strain relief,
exchangeable, max. inner diameter 6 mm
Installation TW - Modbus with strap for direct mounting on pipes
or for direct mounting on flat surfaces
(e.g. walls, ceilings)
Permissible air humidity < 95 % r. H., non-precipitating air
Protection class III (according to EN 60 730)
Protection type IP 65 (according to EN 60 529)
Standards CE conformity
according to EMC Directive 2014/ 30/ EU,
according to EN 61 326
Display two-line display with illumination, programmable,
cutout approx. 36 x 15 mm (W x H),
for displaying the actual humidity and actual temperature
or a selectable parameter or an individually programmable
display value
(The Modbus interface allows the display to be individually
configured in the 7-segment area and in the dot-matrix area.)
MODBUS-Y Y-adapter for cable gland M16 x1.5 (on 2x M12 x1.5),
plastic (included in the scope of delivery)
Type Item No. Price
KA-2 1906-1200-0000-100 0,00 €