AHU Sensor Solutions

Our sensor solutions give your AHU a “smart brain.”
They go beyond providing accurate data — they create real value.
Through real-time monitoring of temperature, humidity, differential pressure, airflow, and air quality, your AHU can automatically optimize its operation and significantly reduce energy consumption.
At the same time, intelligent maintenance functions help prevent unexpected downtime, reduce manual inspection costs, and enhance the overall value of your building assets.

Contact Our Team

Solution Diagram

We provide a complete smart sensor solution designed for AHU applications.This solution covers precise monitoring of key parameters including temperature, humidity, differential pressure, airflow, and air quality.With seamless integration, your AHU evolves from a simple air-handling device into an intelligent control center that senses, learns, and operates efficiently — creating greater value for building managers, equipment manufacturers, and system integrators.

Main Functions

Accurate & Reliable

Equipped with high-quality sensors and advanced algorithms, our system ensures precise data, providing a dependable foundation for stable AHU operation.
Energy Efficient

By continuously monitoring indoor air quality (e.g., CO₂), the system enables demand-based ventilation rather than constant airflow, significantly reducing fan and heating/cooling coil energy consumption, and effectively lowering operational costs.
Smart Maintenance

The SPD 716 differential pressure transmitter monitors filter status in real time. In case of abnormal pressure, it triggers automatic alerts, shifting maintenance from reactive to proactive, reducing manual inspection costs and extending equipment lifespan.
Fully Compatible

Supporting Modbus RTU and other communication protocols, the product integrates seamlessly with building automation systems (BAS) or existing AHU controllers, offering maximum flexibility.
Enhanced Air Quality

Continuously tracking key indoor air indicators such as PM2.5, TVOCs, and formaldehyde, the system ensures healthy, comfortable air and elevates overall building environmental quality.

Application Scenarios

Shopping Malls

Exhibition Halls

Airports

Related Products

Duct temperature and humidity

STH717F

LEARN MORE

● Measurement range:0~50℃/-40-60°C/0-100℃ option,0~100%RH
● Power input: 24VDC/AC
● Output signal: 0-10V/4-20mA,RS-485
● Accuracy: ±0.5℃, ±3%RH
● Power consumption: Imax 0.5W
● IP rating: IP65
● Dimension: 119 x 97 x 268mm

Pressure difference detection

SPD716

LEARN MORE

● Measurement range: 0~50/0~100/±50/±100Pa
● Power input: 24VDC/AC
● Output signal: 0-10V/4-20mA and RS485
● Accuracy: ±1%F.S
● Power consumption: ≤1w
● IP rating: IP65

Liquid temperature transmitter

STH717W

LEARN MORE

● Measurement range: 0~50℃/-20-80°C/0-100℃ option,0~99%RH
● Power input: 24VDC/AC
● Output signal: 0-10V/4-20mA,Modbus RS-485
● Accuracy: ±0.5℃(15℃-25℃); ±1℃(-30℃~15℃，25℃~60℃);±1.5℃(80℃~100℃)
● Power consumption: Imax 0.5W
● Wiring standard: cross-sectional area<1.5mm
● Installation: pipeline installation
● IP rating: IP65

Outdoor wall-mounted temperatureand humidity sensor

STH717

LEARN MORE

● Measurement range: 0~50℃/-40-60°C/0-100℃ option,0~100%RH
● Power input: 24VDC/AC(Default), AC220V(Custmized)
● Output signal: 0-10V/4-20mA, Modbus RS-485
● Accuracy: ±0.5℃, ±3%RH
● Power consumption: Imax 0.5W
● IP rating: IP65

Pipline gas detection

AQC915

LEARN MORE

CO sensor
● Power Supply: 10~30VDC(0~10V, 24V power supply only)
● Output Signal: 485、4~20mA、0~5V、0~10V、WIFI、LORA
● Accuracy: ±5ppm or ±10%
● Zero Drift: ±3ppm
● Stability: ≤2% of signal value per month
● Measurement Range: 0~1000ppm、0~2000ppm
CO2 sensor
● Power Supply: 10~30VDC(0~10V, 24V power supply only)
● Output Signal: 485,4~20mA,0~5V,0~10V
● Accuracy: ±(50ppm+ 3%F·S) (25℃)@400-5000ppm
● Zero Drift: ±3ppm
● Stability:<2%F·S
● Non-linearity:<1%F·S
● Measurement Range: 0~5000ppm
PM2.5，PM10 sensor
● Power Supply:10~30VDC(0~10V, 24V power supply only)
● Output Signal:485、4~20mA、0~5V、0~10V
● PM2.5 Accuracy:Particle counting efficiency:50%@0.3μm， 98%@>=0.5μm.
● PM2.5 Accuracy:±3%FS(@0~100μg/m3、25℃、50%RH)
● Measurement Range:0~1000μg/m3

Air flow velocity transmitter

SFS711

LEARN MORE

● Measurement range: 0~30m/s
● Measurement temperature range: -40~80°C(-40~120°C option) (Only for Airflow
● Power input: 10-30VDC(P≤0.5W) or 24V(-20%~+10%)AC/19-30VDC（P≤2.4W)
● Measurement medium: Air,Nitrogen, Oil fume exhaust
● Output signal: Modbus RS-485
● Speed accuracy: ±（0.2M/S+2% of the measured value）
● Temperature accuracy: ±0.5（25℃）(Only for Airflow Velocity&Temperature Transmitter)

Get In Touch

Contact our friendly Customer Service team for any Question,Concern, or Suggestion. We'd love to hear from you!

8675561218391/2/3/4/5

info@saswell.com