Features： 1、[Vibration Activation] When the machine vibrates, the hour meter records the total run time to track the machine's operating hours. The total hour reading is displayed from 0 to 9999.9 hours with an accuracy of 0.1H. 2、[Maintenance Reminder] Wireless hour meter with programmable maintenance interval service timer (SVC), a countdown reminder of the need for maintenance. LCD display will flash when maintenance interval time is reached. 3、[3 Vibration Sensitivity] The digital wireless hour meter has adjustable sensitivity levels, including 3 vibration sensitivity options, SEN 1 (low), SEN 2 (medium), SEN 3 (high), for more accurate measurements. 4、[Lockout Function] When the timer is locked, it is equivalent to shutting down, no time is recorded, the display turns off, and previous data is automatically saved. Prevent hour gauge from being wasted due to vibration during transportation. 5、[Easy To Install And Use] Digital hour meter with simple and user friendly design, wireless, peel and stick installation, fully airtight housing for increased safety of use. Push switch to start using, for devices that vibrate while working. Specification： Item Type: Wireless Hour Meter Material: ABS, Metal Applicable Type: Suitable for Bike Generators, Marine Motors and Equipment That Vibrates While Working Battery Type: Button Battery (Shipped with Built in Battery) Battery Type: CR2430 Number of Batteries: 1 Piece Battery Capacity: 270mAh Total hours maximum value is 999999; Total hours reading display range is 0 to 9999.9h with 0.1H accuracy; Total hours reading display range is 10000 to 9999h with 1H accuracy. TOT hours are not resettable. Service Timer (SVC) Functions: Programmable Maintenance Time, Such As Air Filter Change, Oil Change. LCD will flash an alarm when maintenance work is required. Countdown timer tracks service reminder time with 0.1H accuracy. Job Timer (job) Function: Used to measure the time for a specific job. The job timer contains two job timers: Job and Job 1. Job timer readings are displayed from 0 to 9999.9h with an accuracy of 1 minute. The job timer can be reset. Programmable Vibration Sensitivity: Used to accurately sense the vibration frequency of different machines during operation. SEN 1 is suitable for low vibration equipment with vibration frequencies greater than 32 Hz. SEN 2 is for medium vibration equipment with vibration frequencies greater than 18 Hz. SEN 3 is suitable for high vibration equipment, whose vibration frequency is greater than 4 Hz. Package List： 1 x Wireless Hour Meter 1 x Instruction Manual 1 x Installation Sticker