OAKTON Hygrothermograph

• The economical solution to monitor and record temperature and humidity.

Choose from two models to help safeguard areas where it is vital to maintain adequate climate control. All units have accurate quartz-controlled drive mechanisms that consistently rotate chart drums, even when batteries are weak.

Nos. 49438 and 49439 include everything you need to get started: two felt-tipped pens (one blue, one red) and one seven-day sheet of chart paper (a roll of one-month paper included with No. 49439). No. 49438 has a seven-day chart rotation period. The small 6" x 7-3/8" x 3-7/8" footprint is ideal for use in warehouses, display cases and computer rooms. Runs for six months on a single AA battery (included). No. 89292 is an inexpensive, compact drum chart recorder with high accuracy and consistent readings. Features a built-in LCD clock in base--allows you to view time at a glance. Corrosion-resistant acrylic housing for indoor or sheltered outdoor use. Includes 55 sheets of seven-day, °C chart paper. Order pens separately. No. 49439 allows you to choose from one, seven or 32-day operation with the flip of a switch. Works well in indoor or sheltered outdoor environments such as storage or agriculture areas. Features single button battery condition tester and flashing LED which indicates that unit is operational. Runs on two C batteries (included) for up to six months. 13-1/4" x 11-1/2" x 5-1/8".