Indoor air quality transmitter INS-TR-HR-CO2-AF-4X6

roomrelative humidityCO2

Summary
Simultaneous monitoring of carbon dioxide and relative humidity. The INS-TR-HR-CO2-AF-4X6 is a CO₂ + humidity transmitter with built-in display, designed for HVAC installations, air handling units and commercial buildings for ventilation control and indoor comfort.

Measurements and performance

• CO₂: ranges 0 to 5000 ppm or 0 to 10000 ppm; resolution ±10 ppm; accuracy ±50 ppm + 2%
• Relative humidity: 0 to 100 % RH; resolution ±1 %; accuracy ±3 %

Display and use
Built-in display enables direct on-site reading for diagnostics and real-time control.

Functions and benefits

• Dual CO₂ and humidity measurement
• Direct reading on integrated screen
• Compatible with HVAC architectures for demand-controlled ventilation
• Prevention of confined atmospheres and control of humidity levels
• Reduction of energy consumption and improvement of occupant comfort
• Robust design, long service life, simple and quick installation

Integration and outputs

• 0–10 V output
• 4–20 mA output
• Modbus RTU communication
• Power supply 12–24 V DC

Design and maintenance

• IP67 enclosure (excluding the sensor)
• Cleanable filter
• Robust and durable design, measurement stability for professional use

Available references / variants

• INS-TR-HR-CO2-AF-406: 0–10 V output version
• INS-TR-HR-CO2-AF-446: 4–20 mA output version
• INS-TR-HR-CO2-AF-466: Modbus RTU version

Key features

• Dual CO₂ and humidity measurement
• Integrated display for instant reading
• Compatibility with PLCs, AHUs, BMS and HVAC systems
• Simplified installation and maintenance

Characteristics / technical specifications

• Reference: INS-TR-HR-CO2-AF-4X6
• Type: CO₂ and humidity transmitter with display
• CO₂ range: 0–5000 ppm or 0–10000 ppm
• CO₂ resolution: ±10 ppm
• CO₂ accuracy: ±50 ppm + 2 %
• Relative humidity range: 0–100 % RH
• Humidity resolution: ±1 %
• Humidity accuracy: ±3 %
• Power supply: 12–24 V DC
• Outputs: 0–10 V / 4–20 mA / Modbus RTU
• Enclosure: IP67 (excluding the sensor)
• Filter: cleanable
• Mounting: simple and quick
• Variants: INS-TR-HR-CO2-AF-406, INS-TR-HR-CO2-AF-446, INS-TR-HR-CO2-AF-466