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Ever-smart Sensor Technology

Main: vehicle pressure sensor, civil pressure sensor, industrial pressure sensor

Jiangmen Ever-smart Intelligent Control Instrument Co.,LTD

Main: Production and production systems for precision instrumentation

and pressure sensors

COPYRIGHT     Ever-smart Sensor Technology   Support:  Jiangmen    粤ICP备14029486号

Ever-smart Sensor Technology



Follow the principle of “professional quality, and sincere realization of mutual benefit”. The company provides customers with high-quality OEM, customized products and services, and sincerely look forward to working with you for friendly, extensive and in-depth cooperation.



Add:3rd Floor, Building D, Haoyu Industrial Park, Keyuan Road, Gaoxin District, Jiangmen District, Guangdong

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HM8400A Air Conditioning Pressure Sensor

The high pressure sensor and low pressure sensor are respectively installed on the exhaust and return air pipes of the compressor. The refrigerant pressure sensor is installed in the high pressure line between the condenser and the evaporator.
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Product Description


What does a refrigerant pressure sensor do to an AC?


Some AC systems have a Low Pressure Safety, a safety to shut off the compressor off if the pressure on the suction side gets too low. Some AC systems have a High Pressure Safety to shut off the compressor is the pressure on the discharge side gets too high. Some AC systems have both. The safeties are designed to prevent catastrophic damage. Some AC systems have an ambient switch, a pressure switch on the discharge side that keeps the discharge pressure from getting too low, shutting off the condenser fan to raise pressure, then turning it back on once a certain pressure has been reached. This keeps the discharge pressure up when it's colder outside.


Product characteristics

High integration, good long-term stability

High sensitivity and fast response speed

Signal amplification, and has a good temperature compensation technology

Accurate measurement results

Compact structure, easy to install in a small space

Extremely cost-effective


Item Specification
Product Series Refrigerant Pressure Sensor
Pressure Range 0~10bar (Customizable)
Power Supply 5V (Customizable)
The Output Signal 0.5-4.5V (Customizable)
Installation Dimension 7/16-20UNF (Customizable)
Overload pressure 150%FS
Burst Pressure 300%FS
Accuracy 1.5%FS (Customizable)
Working Temperature -40~120℃
Storage Temperature -40~120℃
Measuring Medium No corrosive gas, liquid
Load Resistance >2KΩ
Insulation Resistance 500V/100MΩ
Response Time 1mS
Warranty 12 months
Condition 100% New
Quality 100% Tested



Jiangmen Ever-smart Intelligent Control Instrument Co., Ltd. was founded in 2013. We are an intelligent manufacturing enterprise integrating product design, research and development, production and sales.

Since its establishment, our company has been deeply involved in the fields of instrumentation, sensors, testing equipment, and automation control systems.

At present, our products have covered pressure sensors, high accuracy digital pressure gauges, high accuracy detectors, high accuracy pressure controllers, automatic production pressure calibration systems and other major categories, and continue to develop in series.

Our company adheres to the principle of "professional to create high-quality goods, sincere to achieve a win-win situation", and has always strived to create greater value for customers with leading technology.


Facing the future, we will continue to advance, driven by technological innovation and market-oriented, and strive to build a first-class brand in the industry.


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