Advantages at a glance: long sensor life audible alarm sensors continuously monitor the user can replace the sensor head in a noisy environment, by ear can easily identify the location of the largest leak leak Attachments: Description Order No. backup sensor head (CFC, HCFC, HFC, H2) 0554 3180 NH3 spare sensor (NH3) 0554 3181 Technical parameters: Technical specifications of the G / a measuring content R134a, R22, R404a, H2 and all other common refrigerants CFC, HCFC, HFC, H2, etc. (independent sensor head) minimum sensitivity 3g / year response time <1 second alarm LCD and sound standards according to EN 14624 and E 35-422 year 1g 370mm length gooseneck start time 0 to50 ° C <50 秒 -20 to 0 ° C <80 seconds Operating temperature -2 to 50 ° C operating temperature of 20 to 80% RH Storage temperature -25 to +70 ° C operating temperature of -20 to +50 ° C Battery life 6 h Weight 348 g Dimensions 190 x 57 x 42 mm