Comparison

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