Specification<br>Item Type: Hydrogen Test Pen<br>Material: ABS<br>H2 Range: 0 to 2400ppb, 0 to 2.400ppm<br>Resolution: 2ppb, 0.002ppm<br>Accuracy: 10ppb, 0.01ppm<br>Temperature Range: 0.1 to 60.0, 32.0 to 140<br>Resolution: 0.10.1<br>Accuracy: 0.5<br>Working Environment: 0 to 60 (32.0 to 140), RH 90%<br>Waterproof: IP67<br>Battery: 3 x 1.5V Button Battery (LR44) (Battery Not Included)<br>Product Size: Approx. 183 x 37mm 7.2 x 1.5in<br>Display: LCD Digital Display with Backlit<br>Temperature: Automatic Temperature Compensation 0 to 60<br>Data Retention: Value Retention<br>Automatic Shutdown: 5 Minutes<br>H2 Calibration Point: 224, an Error of 20ppb is Normal<br>Application: Suitable for Swimming Pool Experiments, Hydroponic Foods, Aquariums, Gardening, Laboratories, Water Purification Drinking Water, Pond, Etc.<br>Weight: Approx. 139g 4.9oz<br>Package List<br>1 x Hydrogen Test Pen (Battery Not Included)<br><br>1 x User Manual