Chart Recorder by So-Low

7-day temperature recorder with 6" circular chart. The recorder has a battery back-up that will keep the recorder operating for approximately 24 hours after power failure. A pack of 52 charts is included. (Circular chart refill packs are available here). Temperature Range: -115°C to +50°C Dimensions: 8-43/64"(H) x 7-11/32"(W) x 4-1/4"(D) Chart Size: 6" - diameter Input Type: RTD Achievable Temperature Accuracy: +/- 0.25 º C (0.5 º F) Chart Rotation Speed: 7 day or 24 hour Ambient Operating Conditions: 0 º to +40 º C, 0-95% RH, Non-condensing Pen Type: Pressure Sensitive Stylus Battery Backup: One 9 Volt Alkaline Battery Battery Backup Life: Minimum 24 hours The item on this page is ONLY available as a factory-installed extra and must be purchased at the time your So-Low freezer / refrigerator is ordered.