Humidity Sensor 
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Humidity Sensor
Room humidity sensor is used to monitor the air quality inside buildings and effectively control ventilation (HVAC) systems according to current levels of air pollution.
The sensor measures the relative humidity (RH) in air. It is suitable for living rooms, bathrooms, warehouses, ateliers etc.
Measurement of the relative humidity is based on the principle of capacitive polymer sensor.
The sensor has one analog output for the actual concentration of RH. The trigger level of RH output relay can be set by a rotary element.
Ventilation, air conditioning and heat recovery units can be directly controlled based on the output signal of the sensor in very efficient way.
Current air quality can be easily checked by three LED indicators. When ambient light is dimmed, the indicators turn off automatically to not disturb you at night.
TP542
Features & Benefits
- Measures relative humidity in air
- LED indication with automatic turn off according to ambient light (at night)
- Analog voltage output 0-10V
- Output relay NO/C
- Maintenance or calibration not required during operation
- Long life and stability
- For B and B2 models only
- Colour: Front – White, Base – Grey
Technical Information
Product Codes and Specific features
Part Number – TP542
| Parameter | Value | Unit |
| Supply voltage range | 12 – 35 | V DC |
| 12 – 24 | V AC | |
| Consumption | max 1.5 | W |
| RH measuring range | 0 – 100 % | RH |
| RH accuracy 20 – 80 % | ± 3 % | |
| RH accuracy 0 – 100 % | ± 6 % | |
| RH switching hysteresis | 5 % | |
| Voltage output | 0 – 10 | V DC |
| Max. switching voltage | 250/30 | V AC / V DC |
| Max. switching current | 5/5 | A AC / A DC |
| Working humidity non condensing | 0 – 90 % | RH |
| Working temperature | 0 to +50 | °C |
| Storage temperature | -20 to +60 | |
| Expected lifetime | min. 10 years | |
| Ingress protection | IP20 | |
| Dimensions | 90x80x31 | mm |
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