AVC-310 / AVC-311 CO₂ Transmitters – Wall & Duct Mount | RS-485 + Analog

Professional CO₂ Monitoring for Indoor Air Quality & Demand-Controlled Ventilation

The AVC-31X Series CO₂ transmitters—manufactured by AECL and OEM-branded by A.C.S.C. (Shiuan Jey Technology)—are high-accuracy NDIR-based sensors designed for real-time CO₂ monitoring in HVAC, building automation, and industrial environments across Australia.

Available in wall and duct mount configurations, these transmitters integrate seamlessly into ventilation control systems using Modbus RTU and analog output formats (select models), with support for relay activation and optional LCD displays.

The AVC-310 models provide reliable CO₂ measurement only, while AVC-311 models offer 3-in-1 sensing (CO₂ + temperature + humidity) for comprehensive air quality control.

These units are ideal for applications requiring precision sensing, RS-485 integration, and IP65-rated duct performance—whether for classrooms, grow rooms, or BMS-connected infrastructure.

Key Features

• NDIR Gold-Plated Infrared Sensor with Auto Baseline Correction
• Models available with CO₂ only or CO₂ + Temp & RH (CMOS sensor)
• Analog Output (4–20 mA / 0–10 V) – switchable (select models)
• Digital Output: RS-485 (Modbus RTU) standard
• Optional SPDT Relay Output for demand ventilation trigger
• Optional LCD display for local real-time monitoring
• CO₂ Measurement Range: 0–2000 ppm or 0–9999 ppm
• Accuracy: ±30 ppm ±3% (up to 2000 ppm), ±70 ppm ±3% (above 2000 ppm)
• Power: 12–36 VDC / 24 VAC
• CE & FCC Certified
• Designed and Made in Taiwan

Applications

• Smart Building Management Systems (BMS)
• Demand-Controlled Ventilation (DCV)
• Offices, Schools, Classrooms, Conference Spaces
• Agricultural Grow Rooms, Greenhouses, Mushroom Farms
• Museums, Libraries, Train Stations, Warehouses
• Wineries, Breweries, Labs, and Indoor Processing Plants

✅ Available Variants

Note: This product is customizable and can be built to order.
Please refer to the datasheet below for specifications and available configurations.

Once reviewed, click “Enquire Now” — we’ll help you select the right model based on your installation type and output requirements.

Downloads:

• Datasheet