Model TR-73U monitors temperature, humidity and barometric pressure. The compact, lightweight unit is approximately 2 by 3" and operates on one AA battery. It has a large, 4-digit display that shows all three channels. Front-panel buttons control start, stop and setting of parameters. The datalogger has a large data capacity, allowing it to store up to 8,000 readings in one-time or endless recording mode.
T and D Corp.