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Dew module for SHS A-dew sensors

Product no.: SHOP SHS-MOD-LC

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The B+B dew module is a universal, resistive evaluation electronics for detection of condensation for the dew sensors of the SHS series.

Weight: 0.0064 kg
1 pc 41,51 €
Delivery will be effected within 2-3 working days with receipt of payment.
Dew formation module
Switch characteristics
Potential free quiescent current contact, closed in normal operation (condensatfree). Open when operating voltage is missing or dew formation.
suitable for
for SHS A-dew sensors
Switching point
94% RH surface moisture ±4%
Humidity measuring range
0...100% RH
approx. 4%
Application temperature
0...+60 °C
allowable at sensor
Measuring medium
Clean atmospheric air
Semiconductor relay
Contact rating
max. 36 Vs/ 25 mA AC/DC
Contact resistance
Closed: <30 Ω, opened: >1 MΩ
Switching display
LED red at closed contact (dry)
Protective circuit
Transient protection, Varistor 39V and Surge suppression capacitor 10 nF
Operating voltage
24 V AC ±20%, 50 Hz or 20...28 V DC
Function control
LED is illuminated in operating state ("POW")
Screw terminal, RM 3.5, clamping range 0.2...1.5 mm²
(LxWxH) 73 x 15 x 15 mm
Scope of delivery
Delivery incl. connector, without sensor, please order separately.
0.0064 kg

Basically this module with sensor is an electronic hygrostat for the high humidity range which is planned to detect dew and condensation formation on various objects. With the new innovative measuring principle and using SHS dew sensors with logarithmic characteristics, it is possible to capture the dew point threshold very precisely and immediately before condensate formation.

Areas of application include:

  • For cooling ceilings to prevent condensation
  • For indoor pools and shop display windows to keep the double glazing fog -free and prevent steaming-up. 
  • In drinking water and industrial plants to detect „sweating“ of cold pipes
  • In halls and storage facilities to detect condensation formation on cold outdoor walls or steel doors, or to protect the masonry
  • In switch cabinets or in machines for humidity and leakage detectors: The potential free closed current contact is compatible to alarm units
  • In submersible pumps for detecting leakage

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