Microcontroller Unit (MCU) LCD Hour Meters/Counters LM Series DatasheetLM Series Microcontroller Unit (MCU) LCD Hour Meters/Counters Honeywells MCU (microcontroller unit) LCD (liquid crystal display) Hour Meters and Counters, LM Series, are sealed digital instruments designed to monitor and record elapsed running time, normally displayed in hours and tenths of hours. These devices are used to log running time of equipment or counts of equipment use for potential use in transportation applications to assure proper maintenance of expensive machines or systems, as well as warranty claims and rental-use tracking. This maintenance typically involves replacing, changing, or checking parts, belts, filters, oil, and lubrication of heavy duty equipment, or running condition of engines, motors, and blowers, to name a few. These devices can feature up to a 40-year memory data retention (without power) to provide customers with a long data retention capability within their desired application. The large 7 mm display eases readability and offers backlight options and a running indicator. Sealing to IP67 (front)/IP66 (rear) designed to provide enhanced durability. The hour meter also features a long reset time to offer customers the protection against malfunction of reset. The LM Series offers customization options including the customers logo, Honeywell logo, or a black face, as well as numerous customizable bezel options. What makes our hour meters/counters better Backlighting and large display ease readability IP67 (front) and IP66 (rear) rating provides enhanced durability Longer reset time can minimize the possibility of a reset malfunction Multiple bezel options allow for different aesthetic looks and accommodates various space requirements Optional bending terminal blades allow for use where space is at a premium Manufactured for harsh, rugged environments sensing.honeywell.com 2