Henan Hanwei Electronics Co. Ltd

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Carbon Monoxide Alarm Sensor with LCD Display and 3V DC Power Supply	Coin-operated Vending Breathalyzer with Fuel Cell Sensor and Four-digit Display	CD4 Multi-gas Detector with 80 to 116kPa Air Pressure and 3.7V Rated Voltage	Gas Detector with Adjustable Alarming Level and 1 to 20mA Output Current
Gas Alarm for Methane and Propane Gas Detection, Complies with EN50194 Standard	Gas Leak Detector and Alarm for Combustible/CO Gas, with Fast Response, CE-marked