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Elsys ERS2 Sound



Elvaco offers temperature and humidity sensors, both for indoor and outdoor environments. The product line enables simple and cost-effective metering, which enables a more effective use of energy and a better real-estate climate. Sensors are available with M-Bus, Wireless M-Bus or LoRaWAN communication, as well as with or without display.  


Elsys ERS2 Sound - Indoor sensor, LoRaWAN

ERS Sound is a LoRaWAN sensor for high accuracy indoor climate measurements and is a great sensor for smart buildings, dynamic workspaces or climate control. The ERS Sound measure sound level, temperature, humidity, light and motion. The ERS Sound monitors both peak and average sound level and is a perfect device for places where the level of sound is important. For example in libraries, classrooms, airports, or other similar places. All Elsys sensors are equipped with NFC (Near Field Communication) for easy configuration with a smart phone. All settings, such as data rate, encryption keys, triggers and activation can be changed and managed in the Elsys configuration app “Sensor settings”. The battery life is estimated to be up to 2 years, depending on sample interval, transmit interval, data rate, and environmental factors. The sensor is powered by two 3,6V AA lithium battery (sold separately).


Electrical connections

Electrical characteristics

Environmental specifications

Usage environment:

Temperature sensor, margin of error

Humidity sensor, margin of error

User interface


Wireless M-Bus

Integrated M-Bus Master

Wireless M-Bus Receiver

M-Bus slave interface


Data storage (examples)

Mobile Network

Fixed Network (Ethernet)



Connections and Interfaces