Comparison

DeviceCO2-AmpelCO2-Ampel PlusCO2-Ampel Pro
CO2 SensorSensirion SCD30Sensirion SCD30Sensirion SCD30 or SCD41
Air Pressure Sensor--yes
Light Sensoryesyesyes
RGB-LEDsyesyesyes
Speakeryesyesyes
WiFi/WLAN-yesoptional
LoRa--optional
Power ConnectorUSB-CUSB-CUSB-C
Size5x5cm5x5cm8x8cm