Small and exquisite, easy to carry, using high-precision sensors, can detect four kinds of gases at the same time, field workers can carry it with them, clip on clothes pockets or belts to achieve protection while working Powerful and easy to operate:Liquid product dot matrix display technology, support Chinese and English display interface, can display Chinese gas name gas concentration unit PPM, mg/m3 can be switched with one key You can check the battery voltage and battery power percentage with one key. One key restores the factory settings function, which can avoid the trouble of misoperation. Ultra-high buzzer alarm sound, sound, light and vibration triple alarm Store records for easy viewing, with 100 groups of alarm records as standard, and can be viewed on the instrument,When the storage function is optional, it can store more than 100,000 sets of historical record data (optional) and 10,000 sets of alarm record data, which can be viewed on the instrument (optional) 2300mA lithium polymer rechargeable battery, can stand by for more than 13 hours, the host is made of high-strength special engineering plastics and soft outer plastic, durable and comfortable