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Front view of the AcuHUM RM room mount relative humidity and temperature sensor
Front view of the AcuHUM RM room mount relative humidity and temperature sensor
Front-left angled view of the AcuHUM RM room mount relative humidity and temperature sensor
Right-side view of the AcuHUM RM room mount relative humidity and temperature sensor
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
CE Mark

ROOM MOUNT RELATIVE HUMIDITY & TEMPERATURE SENSOR

AcuHUM RM Overview

What is a Room Mount Relative Humidity and Temperature Sensor?

A room mount RH and temperature sensor is specifically built to measure relative humidity and temperature from an indoor space as an integral part of a building automation system. RH sensors are elegantly designed to seamlessly blend in with rooms such as offices, labs, hospitals, and schools to help improve indoor air quality, health, safety, and comfort. The RH sensor accurately tracks room humidity and temperature level using digital polymer sensor technology, and provides output to building automation systems to control HVAC equipment.

Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor

AcuHUM RM Main Applications

ACUHUM RM room mount indoor humidity and temperature sensor

Indoor Humidity & Temperature

The AcuHUM RM is designed to be mounted onto a flat surface, perfect for room applications such as monitoring humidity/temperature fluctuations in offices, labs, hospitals, and more. With ±2% accuracy on relative humidity and up to 0.2°C (0.36°F) accuracy on temperature measurements, AcuHUM RM delivers precise data that helps the building automation system decide whether to heat, cool, humidify, or dehumidify the room.

ACUHUM RM room mount indoor humidity and temperature optimize energy usage

Optimize Energy Usage

By accurately measuring the room humidity and temperature level, the AcuHUM RM gives building automation systems the ability to make fine adjustments, avoid overcooling or overheating, enable demand-based ventilation, process control and optimize energy usage.

ACUHUM RM room mount humidity and temperature sensor indoor air quanlity

Indoor Air Quality (IAQ)

Humidity and temperature are important metrics for indoor air quality. When these parameters are not maintained at the proper level, it may lead to discomfort, stress, and even health issues. AcuHUM RM monitors both parameters to ensure a healthier indoor environment.

ACUHUM RM indoor humidity and temperature Icon
Indoor Humidity & Temperature
ACUHUM RM room mount indoor humidity and temperature sensor

Indoor Humidity & Temperature

The AcuHUM RM is designed to be mounted onto a flat surface, perfect for room applications such as monitoring humidity/temperature fluctuations in offices, labs, hospitals, and more. With ±2% accuracy on relative humidity and up to 0.2°C (0.36°F) accuracy on temperature measurements, AcuHUM RM delivers precise data that helps the building automation system decide whether to heat, cool, humidify, or dehumidify the room.

ACUHUM RM optimize energy usage Icon
Optimize Energy Usage
ACUHUM RM room mount indoor humidity and temperature optimize energy usage

Optimize Energy Usage

By accurately measuring the room humidity and temperature level, the AcuHUM RM gives building automation systems the ability to make fine adjustments, avoid overcooling or overheating, enable demand-based ventilation, process control and optimize energy usage.

ACUHUM RM indoor air quanlity Icon
Indoor Air Quality (IAQ)
ACUHUM RM room mount humidity and temperature sensor indoor air quanlity

Indoor Air Quality (IAQ)

Humidity and temperature are important metrics for indoor air quality. When these parameters are not maintained at the proper level, it may lead to discomfort, stress, and even health issues. AcuHUM RM monitors both parameters to ensure a healthier indoor environment.

AcuHUM RM Diagram

ACUHUM RM room mount humidity and temperature sensor - Diagram

AcuHUM RM Models

AcuHUM-RM-A-A-01
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 4-20mA or
0-10VDC		 10KΩ, Type III
Thermistor		 Fahrenheit Display ±2% ±0.3°C @ 25°C
(±0.54°F @ 77°F)		 CE
4-20mA or
0-10VDC		 10KΩ, Type III
Thermistor		 Celsius Display ±2% ±0.3°C @ 25°C
(±0.54°F @ 77°F)		 CE
4-20mA or
0-10VDC		 10KΩ, Type III
Thermistor		 No Display ±2% ±0.3°C @ 25°C
(±0.54°F @ 77°F)		 CE
AcuHUM-RM-A-A-02
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 4-20mA or
0-10VDC		 10KΩ, Type II
Thermistor		 Fahrenheit Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or
0-10VDC		 10KΩ, Type II
Thermistor		 Celsius Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or
0-10VDC		 10KΩ, Type II
Thermistor		 No Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
AcuHUM-RM-A-A-03
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 4-20mA or
0-10VDC		 20KΩ Thermistor Fahrenheit Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or
0-10VDC		 20KΩ Thermistor Celsius Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or
0-10VDC		 20KΩ Thermistor No Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
AcuHUM-RM-A-A-04
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 4-20mA or
0-10VDC		 1KΩ Platinum RTD Fahrenheit Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or
0-10VDC		 1KΩ Platinum RTD Celsius Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or
0-10VDC		 1KΩ Platinum RTD No Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
AcuHUM-RM-A-A-05
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 4-20mA or
0-10VDC		 100Ω Platinum RTD Fahrenheit Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or
0-10VDC		 100Ω Platinum RTD Celsius Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or
0-10VDC		 100Ω Platinum RTD No Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
AcuHUM-RM-A-A-06
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 4-20mA or
0-10VDC		 1KΩ Nickel RTD Fahrenheit Display ±2% ±0.5°C @ 25°C
(±0.9°F @ 77°F)		 CE
4-20mA or
0-10VDC		 1KΩ Nickel RTD Celsius Display ±2% ±0.5°C @ 25°C
(±0.9°F @ 77°F)		 CE
4-20mA or
0-10VDC		 1KΩ Nickel RTD No Display ±2% ±0.5°C @ 25°C
(±0.9°F @ 77°F)		 CE
AcuHUM-RM-A-B-07
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 4-20mA 4-20mA Transmitter,
1KΩ Platinum RTD
0~50°C (32~122°F)		 Fahrenheit Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
4-20mA 4-20mA Transmitter,
1KΩ Platinum RTD
0~50°C (32~122°F)		 Celsius Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
4-20mA 4-20mA Transmitter,
1KΩ Platinum RTD
0~50°C (32~122°F)		 No Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
AcuHUM-RM-RM-A-B-08
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 4-20mA 4-20mA Transmitter,
1KΩ Platinum RTD
Other Span		 Fahrenheit Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
4-20mA 4-20mA Transmitter,
1KΩ Platinum RTD
Other Span		 Celsius Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
4-20mA 4-20mA Transmitter,
1KΩ Platinum RTD
Other Span		 No Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
AcuHUM-RM-B-C-07
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
0~50°C (32~122°F)		 Fahrenheit Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
0~50°C (32~122°F)		 Celsius Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
0~50°C (32~122°F)		 No Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
AcuHUM-RM-B-C-08
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
Other Span		 Fahrenheit Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
Other Span		 Celsius Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
Other Span		 No Display ±2% <±0.3°C @
5~60°C (<±0.54°F
@ 41~140°F) 		CE
AcuHUM-RM-A-D-00
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 4-20mA No Temperature Humidity Display Only ±2% N/A CE
4-20mA No Temperature No Display ±2% N/A CE
AcuHUM-RM-B-D-00
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor 0-10VDC No Temperature Humidity Display Only ±2% N/A CE
0-10VDC No Temperature No Display ±2% N/A CE
AcuHUM-RM-A-A-01
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
4-20mA or 0-10VDC 10KΩ, Type III
Thermistor		 Fahrenheit Display ±2% ±0.3°C @ 25°C
(±0.54°F @ 77°F)		 CE
4-20mA or 0-10VDC 10KΩ, Type III
Thermistor		 Celsius Display ±2% ±0.3°C @ 25°C
(±0.54°F @ 77°F)		 CE
4-20mA or 0-10VDC 10KΩ, Type III
Thermistor		 No Display ±2% ±0.3°C @ 25°C
(±0.54°F @ 77°F)		 CE
AcuHUM-RM-A-A-02
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
4-20mA or 0-10VDC 10KΩ, Type II
Thermistor		 Fahrenheit Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or 0-10VDC 10KΩ, Type II
Thermistor		 Celsius Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or 0-10VDC 10KΩ, Type II
Thermistor		 No Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
AcuHUM-RM-A-A-03
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
4-20mA or 0-10VDC 20KΩ Thermistor Fahrenheit Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or 0-10VDC 20KΩ Thermistor Celsius Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or 0-10VDC 20KΩ Thermistor No Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
AcuHUM-RM-A-A-04
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
4-20mA or 0-10VDC 1KΩ Platinum RTD Fahrenheit Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or 0-10VDC 1KΩ Platinum RTD Celsius Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or 0-10VDC 1KΩ Platinum RTD No Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
AcuHUM-RM-A-A-05
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
4-20mA or 0-10VDC 100Ω Platinum RTD Fahrenheit Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or 0-10VDC 100Ω Platinum RTD Celsius Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
4-20mA or 0-10VDC 100Ω Platinum RTD No Display ±2% ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 CE
AcuHUM-RM-A-A-06
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
4-20mA or 0-10VDC 1KΩ Nickel RTD Fahrenheit Display ±2% ±0.5°C @ 25°C
(±0.9°F @ 77°F)		 CE
4-20mA or 0-10VDC 1KΩ Nickel RTD Celsius Display ±2% ±0.5°C @ 25°C
(±0.9°F @ 77°F)		 CE
4-20mA or 0-10VDC 1KΩ Nickel RTD No Display ±2% ±0.5°C @ 25°C
(±0.9°F @ 77°F)		 CE
AcuHUM-RM-A-B-07
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
4-20mA 4-20mA Transmitter, 1KΩ Platinum RTD
0~50°C (32~122°F)		 Fahrenheit Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
4-20mA 4-20mA Transmitter, 1KΩ Platinum RTD
0~50°C (32~122°F)		 Celsius Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
4-20mA 4-20mA Transmitter,
1KΩ Platinum RTD
0~50°C (32~122°F)		 No Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
AcuHUM-RM-A-B-08
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
4-20mA 4-20mA Transmitter,
1KΩ Platinum RTD
Other Span		 Fahrenheit Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
4-20mA 4-20mA Transmitter,
1KΩ Platinum RTD
Other Span		 Celsius Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
4-20mA 4-20mA Transmitter,
1KΩ Platinum RTD
Other Span		 No Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
AcuHUM-RM-B-C-07
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
0~50°C (32~122°F)		 Fahrenheit Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
0~50°C (32~122°F)		 Celsius Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
0~50°C (32~122°F)		 No Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
AcuHUM-RM-B-C-08
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
Other Span		 Fahrenheit Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
Other Span		 Celsius Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
0-10VDC 0-10VDC Transmitter,
1KΩ Platinum RTD
Other Span		 No Display ±2% <±0.3°C @ 5~60°C
(<±0.54°F @ 41~140°F)		 CE
AcuHUM-RM-A-D-00
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
4-20mA No Temperature Humidity Display Only ±2% N/A CE
4-20mA No Temperature No Display ±2% N/A CE
AcuHUM-RM-B-D-00
Front-right angled view of the AcuHUM RM room mount relative humidity and temperature sensor
RH Output
Temperature
Output
RH Display with
Temperature Options
RH Accuracy
Temperature
Accuracy
Certification
0-10VDC No Temperature Humidity Display Only ±2% N/A CE
0-10VDC No Temperature No Display ±2% N/A CE

AcuHUM RM FAQs

Does the AcuHUM RM sensor come with temperature compensation?

Yes, AcuHUM RM sensor automatically compensates for the temperature effect when measuring the relative humidity level, delivering accurate data that reflects real air condition.

What is the RH measurement range and accuracy for AcuHUM RM?

AcuHUM RM offers full range of RH measurement from 0% to 100%, which is mapped to analog outputs either 0-10VDC or 4-20mA, with ±2% accuracy from 20% to 80% RH at 25°C.

What is the drift rate for AcuHUM RM?

All RH sensors experience drifting over a long period of time. AcuHUM offers a low drift rate of less than ±0.5% RH/Year, ensuring long-term stability and performance.

What is the average lifespan of the AcuHUM RM sensor?

In a typical office building or commercial space, the sensor should last up to 10 years under normal operating conditions. Extreme environmental conditions, such as high humidity and temperature, will impact sensor lifespan. Any exposure to chemicals like chlorine, cleaners, solvents, or other corrosive agents will shorten the lifespan of the sensor and void the warranty of the product.

Does the AcuHUM RM utilize a capacitive or resistive sensing element?

The sensor employs digital polymer sensing technology that incorporates a capacitive RH sensing element, delivering faster response time, better accuracy across the entire measurement range, and better long-term stability.