Information

Datasheet

Neo-TC-CO2
KNX Temperature and CO₂ Sensor

Article number:
30512563 – aluminium, square, brushed
30512564 – aluminium, square, brushed, black

The Arcus-EDS Neo-TC-CO2 is a sleek, ultra-flat KNX sensor (only 6 mm thick) for measuring and controlling temperature and CO₂ concentration in indoor environments. Designed for installation in standard flush-mounted boxes (60/68 mm), it features a high-quality aluminium front cover available in square or round design. This sensor provides comprehensive functionality for intelligent climate management with integrated control, ventilation logic, and four binary I/Os.

Applications

• Measurement and control of room temperature and humidity
• Detection of CO₂ concentration for indoor air quality
• Decentralised control of thermal actuators or KNX valves
• Ventilation control based on CO₂ levels
• Evaluation of external switches or push-buttons

Functions

• Air temperature measurement (sensor inside the housing, with option for mixed temperature)
• Integrated CO₂ sensor in the front panel
• Control functions for heating and cooling (can be combined)
• Setpoint modes for Comfort, Standby, Economy, and Protection via KNX objects
• Setpoint adjustment via KNX communication objects
• Storage of minimum and maximum temperature values
• Heat and frost alarms
• Limit values for temperature and CO₂ concentration
• Fan control via CO₂ limits or external triggers
• Automatic tracking of setpoints and temperature limits
• Controller output 0–100% or PWM signal for thermal actuators
• Valve flushing function (anti-limescale)
• Second temperature controller as auxiliary regulator
• Four binary inputs/outputs (potential-free)
• Status indication via LEDs on the device
• Four logic blocks for linking internal and external signals

Technical Data

• Measured values: temperature, CO₂ concentration
• Temperature range: -10 .. +50°C
• Resolution: 0.02°C
• Accuracy: ± 0.4°C (5–60°C), otherwise ± 0.8°C
• CO₂ measurement range: 400 – 5000 ppm
• CO₂ accuracy: ± (50 ppm + 3% of the reading)
• Binary I/O: 4 (potential-free)
• Operating voltage: via KNX bus (21 .. 32 VDC)
• Power consumption: approx. 240 mW (at 24 VDC)
• Ambient temperature: -10 .. +50°C (operation), -25 .. +60°C (storage)
• Relative humidity: 0 .. 95% r.H. (non-condensing)
• Bus coupler: integrated
• Auxiliary power: not required
• ETS version: ETS 4 or higher (application: HLK305)
• Terminals: KNX 2-pole terminals (red/black)
• Protection class: IP20
• Housing: aluminium, brushed
• Dimensions: square: 80 × 80 × 6 mm / round: Ø 84 × 6 mm
• Mounting: standard flush-mounted box Ø 60/68 mm (dry indoor areas)

Important Notes

• Only suitable for use in dry indoor environments
• Installation and configuration must be performed by certified KNX professionals
• Use ETS 4 or higher for programming (application HLK305)
• Correct positioning is essential for accurate measurement
• Clean aluminium front cover with a dry cloth only to avoid scratching