Indoor Air Quality Monitor

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Indoor Air Quality Monitor

SA7591
Detects TVOC, CO₂, PM2.5
Power Supply:
　DC 5V/1A (Type-C)
　DC 12V~24V (max 600mA) (Gauge Cable port)
Communication: RS485
Operating Temperature: -5°C ~ 45°C

Real-Time Monitoring — Protect Indoor Air Quality

Equipped with high-sensitivity detection for TVOC, CO₂, PM2.5, temperature, and humidity, this device transmits real-time data to cloud or local systems via RS485 communication interface. Supporting both wall-mount and desktop installation, it features a visual LCD display for intuitive air quality monitoring—enhancing health and efficiency across smart buildings, office spaces, and indoor environments.

Specifications
Product Name: Indoor Air Quality Detector
Model: SA-7591
Document Version: 1.0.1

Power Supply: DC 5V / 1A (Type-C) or DC 12V ~ 24V (max 600mA, cable port)
Communication Protocol: RS485
Core Processor: Real-M300 @ 200MHz, Real-M200 @ 20MHz
Display Screen: PMVA LCD 50 × 31.4 mm
CO₂ Sensor: SCD40
CO₂ Output Range: 400 ~ 40,000 ppm
Temperature Range: -10°C ~ 50°C
Relative Humidity Range: 10% ~ 90% RH
Sensing Element: SEN54
PM2.5 Measurement Range: 0 ~ 1000 µg/m³
VOC (Volatile Organic Compounds Index): 1 ~ 500
RS-485: Half-duplex RS-485 communication standard
Installation Method: Wall-mounted / Desktop
Dimensions (H × W × D): 90 × 90 × 43 mm
Weight: 23.2 g
Operating Temperature: -5°C ~ 45°C
Operating Humidity: 10% ~ 90% (non-condensing)
Storage Temperature: -10°C ~ 65°C
Button: Reset hole ×1
Certification: NCC
Data Acquisition Method: RS485