Mastercool 98061 Digital Vacuum Gauge in Case

High quality thermocouple sensor and microcomputer This unit has measurement capability ranging from atmosphere to 1 micron Automatic Warm-up Low Battery Indicator Programmable Vacuum Level Light Replaceable Sensor (no calibration required) Sensor or Cable Disconnect Indicator (displays 888888 with Red LED) Protective Rubber Boot for Durability Heavy Duty Hook folds back into unit for compact storage AC/DC Connector capability Auto-Off after 10 minutes with disabling capability