Each instrument is referenced (by comparison testing) to NIST traceable standard with a type 1 sound level meter. All instruments meet or exceed type 2 calibration.
Has an additional “latching” option. This means, once activated, alarm 2 remains on. Alarm 2 must be reset to re-start its latching option.
REMOTE SENSOR OPTION
500 feet distance for remote sound level sensor placement. This allows special monitoring and distance monitoring applications.