Three Channel Temperature & Humidity Measurement
Measuring temperature range: -40~+99℃
Measuring temperature range: 20%RH~90%RH
Display: LED display
RS485(Modbus-RTU) Communication
+86-18702106858 / +86-21-69156352
Acrel WHD72-22 intelligent temperature and humidity controller delivers dual-channel environmental regulation for critical electrical infrastructure. Engineered for 67*67mm panel cutout installation, this robust unit actively manages climate conditions within high-voltage switchgear, terminal boxes, and substation enclosures.
Featuring two independent WH-3 sensor inputs, it concurrently monitors separate zones across -40°C to 99.9°C temperature span and 0-99% relative humidity spectrum with ±1°C and ±5%RH measurement accuracy. Each channel autonomously operates heating and fan-based cooling through dedicated 5A relay outputs, proactively preventing moisture-induced flashover and thermal degradation of sensitive components.
Enhanced functionality includes optional fault alarming and RS485 MODBUS RTU communication for centralized monitoring. Supporting wide-range AC/DC supply voltage flexibility, the WHD72-22 delivers dependable, localized protection that ensures equipment longevity and uninterrupted operation in demanding electrical environments.
| Technical parameter | Value | |||
| Measuring range | Temperature | -40.0℃～99.9℃ | ||
| Humidity | 0%RH～99%RH | |||
| Precision | Temperature | ±1℃ | ||
| Humidity | ±5%RH | |||
| Transmitting output | DC 4～20mA或DC 0～20mA | |||
| Set range of controlling parameter | Heating for | -40.0℃～40.0℃ | ||
| Temperature rising | ||||
| Blowing for | 0.0℃～99.9℃ | |||
| temperature | ||||
| decreasing | ||||
| Humidity control | 20%RH～90%RH | |||
| output contact capacity | 5A/AC250V | |||
| Start/stop gap | 5 | |||
| Communication port | RS485,MODBUS(RTU)协议 | |||
| Auxiliary power | Voltage | AC 85～265V | ||
| DC 100～350V | ||||
| Consumption | Basic power consumption(≤0.8w)； | |||
| relay power consumption(each channel≤0.7w) | ||||
| Insulation resistance | ≥100MΩ | |||
| power-frequency withstand voltage | power with shell,touchable metal parts/ | |||
| power with other terminal group 2kV/1min(AC,RMS) | ||||
| average work time without stoppage | ≥50000h | |||
| Working condition | Temperature | -20℃～+60℃ | ||
| (controller) | Humidity | ≤95%RH，without condensation and corrosive gas | ||
| Altitude | ≤2500 m | |||
Power Monitoring Solution
Rated Current 80A Directly
MID Certificated
High Accuracy Class C
35mm DIN Rail Mounted
Pulse Output
4 Modules 72mm Width
For IoT Energy Management, Factory, School
Split Core
Clamp on Installation
High Accuracy Class 0.5
150-1000A Input Current
5A/1A Secondary Output
Application: Renovation Projects
Event recording
Start control function
programmable DI and DO
Profibus-DP communication
Anti-shaking function
Analog output
Event recording
leakage protection
AC380V/690V
programmable DI and DO
Analog output
Anti-shaking function
Split Core
High Accuracy Class 0.5
Current Input 20-6000A
Current Output 5(1)A
Rectangular Hole Design
Measurement of current (I)
Application: Renovation Projects
Founded in 2003, Acrel Co., Ltd.【Stock Code: 300286.SZ】 is a high-tech enterprise specializing in energy management solutions and electrical safety. Headquartered in Shanghai, Acrel offers innovative and sustainable solutions for microgrid energy efficiency and electrical safety. With over 600 patents and software copyrights, Acrel has deployed more than 28,000 system solutions globally, forming a comprehensive "cloud-edge-end" energy internet architecture.
Acrel Co., Ltd. is China Wholesale WHD46-33 Three Channels Temperature & Humidity Controller Manufacturers and WHD46-33 Three Channels Temperature & Humidity Controller Factory. Acrel's integrated product ecosystem spans from cloud platform software to end-user components, covering sectors such as power, renewable energy, data centers, smart buildings, transportation, and smart cities. These solutions enable intelligent, real-time energy management, enhancing energy security and reducing operational costs. We offer WHD46-33 Three Channels Temperature & Humidity Controller for sale.
The company's production facility, Jiangsu Acrel Electric Manufacturing Co., Ltd., adheres to strict quality standards and environmental guidelines, with advanced testing centers and a commitment to lead-free production processes. Acrel's team of over 500 engineers delivers cutting-edge energy efficiency systems and smart energy solutions.
With a strong domestic presence, Acrel is actively expanding internationally, supported by a global network of sales and technical teams and an e-commerce platform that ensures seamless service experiences worldwide. Acrel is proud to help businesses improve efficiency, reduce consumption, and achieve sustainability goals.
Together, we are building a smarter, greener future.
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Phone: +86-18702106858 / +86-21-69156352No.253 Yulv Road, Jiading District, Shanghai, PRC 201801
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