Data centers, server rooms and equipment rooms all run with, most of the time, nobody in them. Everything is monitored by staff from another room — or another site.

Often when something goes wrong, a loud noise is the first sign: a loud bang, fans making abnormal sound, an arcing component, a local alarm going off. Who notices, if no one is in the facility?

This sensor can. It listens and records the highest noise level 10 times per second, continuously monitoring the decibels in the room it is installed in. The moment the level moves outside the band you defined, the base unit raises an alert via email, SMS or voice call.

Monitoring noise for occupational health rather than security? See the ENV-NOISE noise sensor.

A monitoring system that polls a sensor every minute would miss a half-second bang entirely — unless the sensor itself remembers it.

- The SEC-SOUND captures the noise level 10 times per second.
- Between two data requests (SNMP, Modbus TCP), it returns the highest recorded sound level in dB.
- Measurement range from 10 to 90 dB, with ±1 dB accuracy and 1 dB resolution.

However short the noise event, it is captured, held and reported at the next poll — nothing slips between requests.

Every room has its own normal: the steady hum of fans, HVAC and equipment. Setting a meaningful alarm level starts from knowing that baseline.

- Let the sensor run to learn the normal sound level of your room.
- Set the maximum alarm level in decibels accordingly — bangs, grinding fans, alarms.
- Or set a minimum level: a room going unusually quiet can mean equipment has stopped.

Threshold alerting is handled by the base unit, which raises an alert via email, SMS or voice call the moment the measured level moves out of the defined band.

An abnormal noise is heard in the vicinity of the location where the incident occurs — but may not be heard on the other side of the room.

- The more racks or equipment you have, the more sound sensors you'll need.
- Place sensors near the equipment groups you want covered, not just centrally.
- Multiple SEC-SOUND sensors connect to the same base unit alongside your other sensors.

The sensor is specifically designed for indoor use.

- Connects to the base unit over standard network cable.
- BMS integration over Modbus TCP, BACnet IP & Modbus RTU (RS-485, with the optional RTU addon).
- SNMP GET and SNMP TRAPS for NMS & DCIM platforms.
- MQTT for Industrial IoT applications (BASE-6).
- Alerting via email, SMS and voice call from the base unit itself.
- Plug & play — no configuration required on connection.

Looking to integrate this sensor with your own gateway or control system?

The RS485-SOUND is a special version of the sound security sensor with a native RS-485 digital output, allowing direct integration bypassing our base units.

Questions? Chat with us or drop us an email at hello@infrasensing.com — it will be a pleasure to assist you.