Product Details
Fresh Air Controller KGD - AM - 121
Product Introduction
The KGD - AM - 121 fresh air controller is equipped with a
high-precision sensor module independently developed, which can
monitor and display in real time the measured values of five air
quality indicators, namely indoor PM2.5, CO₂, formaldehyde,
temperature, and humidity. It cooperates with the fresh air control
board to directly control the fresh air system, such as functions
like adjusting the air volume, controlling the air
supply/extraction, and setting the mode. It can be widely applied
in residential, commercial, and industrial settings, and
effectively improve the air quality, creating a healthy,
comfortable, efficient, environmentally friendly, and energy-saving
living and working environment.
Product Features
- Achieves linkage with fresh air air conditioners based on the
actual measured values of the current environment.
- Monitors multiple sensor parameters simultaneously and enables
visual output.
- Sensors such as TVOC, PM2.5, CO₂, formaldehyde, temperature, and
humidity can be freely combined.
- Meets customers' customization requirements for appearance and
functions.
Technical Parameters
Detection Range | PM2.5: 0 - 1000μg/m³ CO₂: 400 - 5000 ppm Formaldehyde: 0 - 1mg/m³
(Maximum detectable value is 1mg/m³) Temperature: -10°C - 50°C
Humidity: 0 - 95%RH |
Data Refresh Frequency | 1s |
Operating Temperature | -10°C - 50°C |
Storage Temperature | -20°C - 60°C |
Operating Voltage | DC 12V (24V AC/DC optional) |
Operating Current | < 140mA |
Communication Mode | RS485 (4 - 20mA/0 - 10V/0 - 5V optional) |
Product Dimensions | W86H86D24.9 (mm) |
Company Profile
Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of
measuring instruments , located in China xi’an City. Since 2008,
Xi'an Kacise focused on the development and production of pressure,
level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical
and management personnel, through efforts of our entire staff, we
have become a professional measuring instrument manufacturer and
solution provider. And we are continuously trying to improve
product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE,
intrinsic safety explosion-proof and isolated safety
explosion-proof certificates, etc. which ensure that our products
comply with international standards.

Kacise sensors have already been exported to America, Spain,
Australia, Chile and 20 other countries and regions, and received
many favorable feedbacks. Our overseas distributers are also
increasing. We regard “reasonable prices, efficient production time
and good after-sales service” as our tenet, and hope to cooperate
with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices,
and provides industry-leading customer service. We personally get
to know each of our customers, and we know how to discover the most
valuable part of our business , to help others achieve their goals.