Features Smart Control: Allows wide application on various industrial systems for better engine control and easier equipment operation. PRECISE WORKING The battery operated hour meter ensures high accuracy and greatly improves your efficiency with more reliability. BETTER TIMING Comes with a maximum timing range of 0-999.99h, the time display also has a reset function for counting working hours. Easy to Install The standard design with light weight and compact size allows for easy installation by drilling holes or kinking. CLEAR DISPLAY Works stably under 220V AC, the timer allows digital display to clearly display the data and simplify your work. Specification: Item Type: Operating Hour Meter Product model: HM-D48. Operating voltage of the product: 220 V, 50 Hz. Maximum accumulation time of the product: 0-999.99h Product operating temperature: -10 ~ 50 °C. Product accuracy: ±0.01. Reset product 0: yes Product battery: 2 x CR2016 3V 75mAh button battery for single battery (with built-in battery) Package list: 1 x operating hour counter Package List 1 x Hour Meter