The 700LN001N48150D100230A is a solid state 3-wire hour meter from Curtis Instruments designed to track elapsed operating time in industrial and commercial equipment. It features a 6-digit LCD display with 5 mm high digits (non-backlit standard), operates across a wide dual-voltage range of 48–150 VDC nominal (36–185 VDC absolute) and 100–230 VAC nominal (75–270 VAC absolute), and maintains 0.1% accuracy with a maximum range of 99,999.9 hours. The unit incorporates EEPROM memory that retains data for 25+ years without power, requires only 5 seconds of main power application to arm memory, and operates reliably across -40°C to +85°C with 95% non-condensing humidity tolerance. Common applications include scheduled maintenance tracking, warranty documentation, and equipment runtime monitoring for medical devices, transport vehicles, and industrial machinery.