Omega Engineering’s Temperature Chart Recorder CT89 has a microcontroller design that enables it to accurately measure and record temperatures in air, gas, liquids, powders, solids and semisolids using the stainless steel, remote reading 102-mm (4-inch) probe with 4.6-m (15-foot) cable. This series features a large LED digital temperature display, three temperature ranges and four chart speeds, a battery backup that assures normal operation during power interruptions, and a polycarbonate case, cover and handle. The recorder can be used freestanding or wall-mounted. Applications include food storage, HVAC, general laboratory, and computer room monitoring.