Overview_x000d_\n3-1/8Ãâ'¬Â backlit lcd gauges provide easy-to-read accurate measurements for system pressures. This gauge is capable of handling maximum pressures of 800 psi, so there are no worries about over-pressurizing. Pre-programmed with 21 of themon refrigerants, the yellow jacket digital gauges will provide clear, swift and accurate pressure measurements for all your system applications. _x000d_\n_x000d_\n_x000d_\ngauge specifications_x000d_\n_x000d_\nÃâ'¬Â pressure range: -14.7 ~ 800 psi (-1 ~ 54.4 bar)_x000d_\nÃâ'¬Â unit (pressure): psi / bar / mpa / kg/cm2 / kpa_x000d_\nÃâ'¬Â working temperature: 14ĉ ~ 140ĉ (-10ÄÆ' ~ 60ÄÆ')_x000d_\nÃâ'¬Â pressure accuracy: ñ0.5% f. S @71.6~82.4ĉ (@22~28ÄÆ')_x000d_\nÃâ'¬Â unit (temperature): ĉ/ÄÆ'_x000d_\nÃâ'¬Â working humidity: 35~85%_x000d_\nÃâ'¬Â sampling rate = 1.2 sec max. _x000d_\nÃâ'¬Â auto-off: 10 minutes_x000d_\nÃâ'¬Â zero pressure function_x000d_\nÃâ'¬Â power supply: battery cr123a (3.0v, 1400mah)_x000d_\nÃâ'¬Â battery life: 2 years for continuous operation_x000d_\nwithout backlight_x000d_\nÃâ'¬Â warranty: one year_x000d_\n_x000d_\nrefrigerants_x000d_\n_x000d_\nr-22, r-23, r-32, r-124,_x000d_\n_x000d_\nr-134a, r-290, r-404a, _x000d_\n_x000d_\nr-407c, r-407f, r-408a, _x000d_\n_x000d_\nr-410a, r-417a, r-427a, _x000d_\n_x000d_\nr-444b, r-448a, r-449a, _x000d_\n_x000d_\nr-452a, r-507, r-600a, _x000d_\n_x000d_\nr-1234yf, r1270_x000d_\n_x000d_\n