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WT8823 Combustible Gas Alarm Detector Gas Leakage Flammable Natural Digital LCD Display Gas Leak Detector Monitor Gas Analyzer, WT8823 magnetic stirrer hot plate amazon It is important to maintainspecification 1. Measurement range: 0~100% 2. Sensor type: contact combustion type 3. Response time: about 10 seconds 4. Working voltage: 3. 6V 5. Alam limit: 10% methane 6. Working environment temperature: 0~50C 7. Low battery indicator: 3. 3v 8. Working current: 200mA 9. Power: 3x1. 2v NiMH battery Package Included 1 flammable gas detector (without battery) 1 USB cable 1 x manual Specification: General Certificate CE Package Weight One Package