One 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 WHD48-11 intelligent controller is purpose-built for environmental management within electrical equipment enclosures. This embedded-mount solution occupies minimal panel space (45×45mm cutout) while delivering robust climate regulation for high-voltage switchgear, distribution terminals, and transformer substations.
Equipped with a single WH-3 sensor channel, it continuously tracks ambient conditions across -40°C to 99.9°C temperature span and 0-99% relative humidity spectrum. The unit autonomously activates heating or fan-based cooling through dual passive relay outputs, maintaining preset thresholds to prevent moisture-induced flashover and thermal degradation.
Operational flexibility is enhanced through RS485 MODBUS RTU communication, enabling centralized supervision and parameter adjustment. Supporting wide-range AC/DC supply voltage, the controller provides clear local readouts of measured values with ±1°C and ±5%RH accuracy, ensuring reliable protection against environmental threats to electrical components.
| 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 WHD48-11 Digital Programmable Temperature & Humidity Controller Manufacturers and WHD48-11 Digital Programmable 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 WHD48-11 Digital Programmable 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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