?? DETECT: High Range 0-100ppm OZONE. USA NIST traceable calibrated in Los Angeles. Turn ON and GO.
???? ACCURATE: Accuracy ?±5% F.S. and response time T<30s. Zero and span calibration options.
???? ALARMS: Has flashlight capability. Adjustable Audio, visual, and vibration alarms. Alarm digital time stamp and logging.
???? STRONG: Shock proof, water proof, dust proof and explosion proof. Belt clip, charger, cable and case included.
????? TRUST: ** 1 year limited warranty ** Arrives with calibration and QA certificate ** 100% product test and verification in the USA ** 100% quality guaranteed **