Humidity and Temperature Controller N323RHT

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Humidity and Temperature Controller

The N323RHT is a digital controller of temperature and relative humidity. It has three relay type control outputs that can be configured to act as a controller, alarm or timer. The humidity and temperature sensor is not included (it is sold separately). The sensor is protected by a polyamide capsule and has a 3 meter long cable.


The electrical characteristics of each model are presented in the housing of the controller itself, according to the purchase order. It has CE (European Union) and UL (United States and Canada) certificates.

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- Input Sensor: Humidity measurement

  Range: 0 and 100 % (RH) (see Fig. 1)
  Accuracy: See Fig. 1; Repeatability: ± 1 % RH
  Hysteresis: ± 1 % RH
  Linearity error: << 1 % RH
  Stability: < 1 % RH / year
  Response time: Around 8 s to reach 63 % of a fast input change. Valid at 25 °C and 1 m/s airflow

- Input Sensor: Temperature
  Accuracy: Refer Fig. 1; Repeatability: ±0.1 °C
  Range: -20 and 100 °C (see Fig. 1)
  Response time: up 30 seconds in slow moving air
- Warm - up: 15 minutes
- Measurement Resolution:

  RH: 1 %
  T: 0.1º from –19.9 to 119.9º
  Note: the equipment keeps its precision all over the range, despite the lack of display resolution in a part of the range does not allow its visualization

- OUTPUT1: Relay SPDT; 1 HP 250 Vac / 1/3 HP 125 Vac (16 A Res.)

- Optional: Pulse, 5 Vdc, 25 mA max
- OUTPUT2: Relay: 3 A / 250 Vac, SPST-NA
- OUTPUT3: Relay: 3 A / 250 Vac, SPST-NA

- Power Supply: Voltage: 100 to 240 Vac/dc ± 10 %

  Optional:  12 to 30 Vdc
  Frequency: 50~60 Hz
  Consumption: 5 VA

- Dimensions:

  Width x Height x Depth: 75 x 33 x 75 mm
  Weight: 100 g
  Panel cut-out: 70 x 29 mm

- Electronic module operating environment: 0 to 40 °C (32 to 104 ºF) / 20 to 85 % RH
- Sensor module operating environment: -20 to 100 °C (-4 to 212 ºF) / 0 to 100 % RH
- Case: Polycarbonate UL94 V-2
- Protection: box IP42, front panel IP65, sensors capsule IP40 (sold separately)
- Suitable wiring: Up to 4.0 mm²; RS-485 digital communication; RTU MODBUS protocol (Optional)
- Serial interface not isolated from input circuitry
- Input circuitry isolated from power supply, except in the 24 V powered model
- Optional: Pulse, 5 Vdc, 25 mA max


Flyer N323RHT

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Operating Manual N323RHT

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Modbus Protocol N323RHT

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RHT-Probe Manual

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Flyer Eletronic Thermostats NOVUS

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CE - D.O.C. Temperature Controllers

CE Declaration of Conformidity.

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(PDF - 0.18 Mb)


UKCA - D.O.C. Temperature Controllers

UKCA Declaration of Conformidity

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2D Housing Drawing - N32x

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Selection Guide - Thermostat

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