ELSNER 71390 Cala KNX IL CO2, pure white RAL 9010 CO2 Indicator

The ELSNER 71390 product, called Cala KNX IL CO2, is an air quality indicator equipped with a CO2 sensor, designed to be integrated into KNX automation systems.

Key Features

This device is made with an elegant and functional design, characterized by a 55 mm insert with an LED illuminated area.

Construction Features

• Glass, plastic and metal case
• Case color: RAL 9010 (white)
• Dimensions: 55 mm x 55 mm x 35 mm, with 71 mm x 71 mm support ring and mounting depth of about 7 mm
• Total weight: about 55 g
• Degree of protection (after assembly): IP20

Environmental Conditions

• Ambient temperature: 0°C... +45°C
• Ambient humidity (non-condensing): 0%... 95%
• Storage temperature: -25°C... +70°C
• Overvoltage category: III
• Pollution degree: 2

CO2 Sensor functionality

The CO2 sensor of the Cala KNX IL CO2 measures the concentration of carbon dioxide in the air in the range of 400... 5000 ppm, providing an immediate view of air quality through the LED indicator.

Integration with the KNX Bus

• Setup mode: S-Mode
• Maximum group addresses: 254
• Maximum allocations: 254
• Communication objects: 115 for the CO2 model
• Nominal voltage: 30V DC SELV
• Power consumption: ≤ 30mA
• KNX connectors with plug-in terminals, conductor diameter: 0.6... 0.8 mm
• Duration after the bus voltage is restored until data is received: about 5 seconds

Installation and Use

For installation, a frame compatible with the circuit breaker scheme used in the building and a socket in accordance with DIN EN IEC 60670-1/DIN 49073 are required.

The indicator can display various states, such as limit value violations, room occupancy or status reports, making it an essential element for managing air quality in indoor environments.