ERS2 Sound is a wireless LoRaWAN sensor for indoor use that measures sound levels, temperature, humidity, light, and motion (PIR). Its Scandinavian design makes it unobtrusive in business, public, and private environments. The ERS2 Sound is very low-maintenance due to its long battery life, and the batteries can be easily replaced when needed. Sensor configurations, such as sampling rate, data rate, encryption key, triggers, activation, and more, can be quickly adjusted via NFC with a smartphone or through downlink.