ENM's Series T39 LCD 6-digits hour meter and up or down counter instrument is ideal to any application that requires recording both time measurement and event count for maintenance schedule. The two display meters can operate independently or in parallel. This compact tamper-proof meter is protected from the environment to provide years of service. Accumulated time hours and counts are stored on powerless nonvolatile data backup using CMOS EEPROM technology, where small space and reliable meter is required with memory that does not relay on battery.