The Sound sensor of model/PR55-47S is unable to be selected/detected in the web console of Micro Gateway MQtt device of model/PR55-21 MQTT. Is this sensor not supported by the MqTT gateway? From the document Wireless IoT Sensors Support Map - NCD.io too understood the sound sensor not supported in the MQTT gateway. Please confirm whether sound sensor mentioned not supported by the MQTT gateway.
The Type 92 sound sensor was not previously supported by the MQTT Gateway. I just pushed a firmware update so it will support it now. You can update your MQTT Gateway by following instructions outlined here: