Features 1、Adopting high quality sensor, high sensitivity and long service life. 2、This halogen gas detector could detect most halogen gases containing chlorine, fluorine and bromine. 3、It can detect ethylene oxide leakage of hospital disinfection equipment and SF-6 in high-voltage circuit breakers. 4、Detection of cleaning agents used in dry cleaning equipment, such as carbon tetrachloride, can also be used to detect halon in fire extinguishing systems. 5、Low power consumption circuit design, so that the work more stable, more durable battery. Specification Features: Adopting high quality sensor, high sensitivity and long service life. This halogen gas detector could detect most halogen gases containing chlorine, fluorine and bromine. Detection of cleaning agents used in dry cleaning equipment, such as carbon tetrachloride, can also be used to detect halon in fire extinguishing systems. Low power consumption circuit design, so that the work more stable, more durable battery. Specification: Condition: 100% brand new Weight: 236g/8.3oz Working temperature: 0℃ ~ 52℃ Maximum sensitivity: for halogen refrigerants, 6gr/year Battery life: about 50 hours under normal use Response time: instantaneous Mode: continuous, unlimited Preheat time: about 6 seconds Reset time: 2-10 seconds Fixed probe length: 20cm/7.9inch Unit size: 36 * 3.5 * 4cm / 14.2 * 1.4 * 1.6in Power supply: 4* 1.5V AAA batteries (NOT included) Package List: 1* Halogen Leak Detector 1* Instructions Package List