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2016 Latest Formaldehyde Detector TVOC Gas Sensor Formaldehyde Detection Meter Product description Model JSM131S Product Name TVOC (formaldehyde) Detector Display detection technology the gas flow conductivity detection technology Instrument size 137 * 66 * 24MM Operating voltage 5V Battery capacity 1000MAH Temperature range -15- +50 degrees Humidity range 15-90% RH HCHO 0.001mg/m3-9.999mg/m3 0.001ppm-7.999ppm TVOC 0.01mg/m3-99.99mg/m3 Accuracy rate 0.01MG / M3 Detection float 2% Battery Type 7 alkaline batteries Power standby about 60 hours Charging time about 4 hours Energy-saving