Brand: FORENSICS DETECTORSModel: FD-O2BOXUser Manual: Click HereBlog Article: Click Here 🔬 ACCURATE: Electrochemical oxygen sensor with O2 from Honeywell. 🌊 DETECT: Range 0 - 100% with 0.1% resolution. Honeywell 3-year sensor, made in Germany. Turn ON and GO. 🎆 DURABLE: Water-resistant case protects analyzer with water-resistant user manual. 💪 STRONG: Constructed with strong ABS plastic housing with a swivel T-piece for easy measurements. Comes with a rubber dome for direct cylinder testing and a coupler to 4 mm silicone tubing for direct oxygen concentrator testing. 🕵️ TRUSTWORTHY: ** 1-year limited warranty ** Product tested, packaged, and verified in the USA ** Details: This is our OXYGEN ANALYZER Model O2BOX, accurate and easy-to-use for scuba, nitrox, diving, and testing oxygen purity levels from various sources such as oxygen machines and generators. It is made with extra-large buttons for easy use. The oxygen analyzer is designed to detect 0 - 100% from various machines where oxygen is created using air and balanced with nitrogen. The analyzer can be calibrated to air in less than 2 seconds with one-button calibration. In addition, the O2 sensor can be replaced by the user easily. Included: Gas analyzer, waterproof user manual label attached to the case, water-resistant ABS carry case, coupler with 6 inches of silicone tubing for direct O2 generator connection, and 3 x AAA alkaline batteries installed. Other Accessories (sold separately): Gas Sensor Replacement (O2)Gas Detector Hard CaseGas Detector PouchGas Detector StandGas Calibration Service (sold separately):Gas Detector Calibration Service Specifications Gas Sensor Type: Electrochemical Gas SensorResponse Time: < 30 secSensor Life: 3 yearsRecommended Calibration Period: 6-12 monthsOxygen (O2) Range: 0% - 80% (Error < ± 2.0% of O2)Oxygen (O2) Range: 80% - 99.9% (Error < ± 5.0 % of O2)O2 Flow Required Testing: > 0.5 LPMMax Pressure: 2 ATM (2 bar)Storage / Operating Temperature: 14F – 122FStorage / Operating Humidity: < 95% RHBattery: 3 x AAA, Dimensions: 122 mm x 78 mm x 40 mmWeight: 175 grams Disclaimer: This analyzer has yet to be issued an FDA 501 (K) notification.