The new kit of the Homematic IP CO2 sensor, which also measures temperature and humidity, is designed to determine indoor air quality levels. Note: This is a kit that needs to be assembled! In addition to integration into your smart home via radio, the device can also be used stand-alone. Five LEDs indicate the CO2 concentration in the air. The HmIP-SCTH230 uses a CO2 sensor from the Swedish sensor specialist Senseair and is intended for installation in a flush-mounted unit. This allows it to be seamlessly integrated into existing infrastructure in offices, schools, and smart homes. It can also be used stand-alone, with five LEDs displaying the CO2 concentration: < 600 ppm (first LED), < 900 ppm (second LED), < 1200 ppm (third LED), < 1500 ppm (fourth LED), > 1500 ppm (fifth LED). Easy integration into existing infrastructure - designed as a 55 mm flush-mounted device. High-quality CO2 sensor from Senseair. CO2 concentration is measured using the NDIR measurement method (Non-Dispersive Infrared) - Single-Beam. Integrated relay output (with changeover contact) for easy control of lights (not suitable for switching circuits). The measurement interval for the LED display is 10 seconds, with a minimum of 2 - 3 minutes for radio transmission. The brightness of the LEDs can be adjusted or turned off via a separate channel (only when using the CCU). It also measures temperature (°C) and humidity (rH) for optimal representation of indoor air quality. Measurement values can be logged and displayed as a graph over time via the Homematic IP Access Point or the Smart Home Central CCU3. For in-depth analysis, the measurement values can also be exported as a CSV file. Operation requires connection to one of the following solutions: Homematic IP Access Point.