Model87601 temperature and humidity data logger Key benefits Fast, reliable readings in challenging environments. Dual thermistor sensors use wet bulb and dry bulb principles plus a builtin fan to deliver accurate temperature and humidity updates with a typical response time of 120 seconds. Long term logging and analysis. Stores up to 8000 data points and allows PC download for detailed review and reporting. Durable for humidity, dust, and spray conditions. Design minimizes the effect of condensation, pesticide and fertilizer spray, and dust on humidity readings. Main features Temperature range 5 to 50 C, resolution 0.1 C and 0.1 F, accuracy plus or minus 0.6 C. Humidity range 0.1 to 99.9 percent RH, resolution 0.1 percent RH, accuracy plus or minus 3 percent RH at 25 C for 10 to 100 percent RH; other conditions plus or minus 5 percent RH. Response time approximately 120 seconds with builtin fan to improve sampling speed. Large easy to read LCD 40 mm by 25 mm and dual color LED indicator for logging status and alarm condition. and low alarm settings for temperature and humidity, with maximum, minimum and hold functions. Battery low indicator. Auto logging with selectable sampling rate and 8000 point memory. Memory can be downloaded to PC for analysis. Power options: four AAA batteries or external 5 V adaptor (adaptor not included). Compact meter size 178.5 mm by 48.4 mm by 24.7 mm, weight about 250 g. Operating temperature 5 to 50 C and operating relative humidity less than 100 percent. Storage temperature 0 to 50 C and storage relative humidity less than 80 percent. Water tank designed for practical use with refill interval approximately every two weeks. Package contents and optional accessories Standard package: meter, water tank, batteries, manual, paper box, cotton thread. Optional accessories available: 5 V universal adaptor, USB software cable and CD for PC download. Practical applications Greenhouses and nurseries: monitor temperature and humidity to support plant health and irrigation decisions while resisting spray and condensation interference. Storage and archive rooms: track environmental conditions to protect sensitive materials and maintain records for compliance. Agricultural and production environments: place in areas exposed to spray, dust or humidity to obtain stable readings and automated logs for process control. Why choose Model87601 Combines accurate dualsensor measurement with practical protections against condensation and contaminants. Built for continuous logging and easy transfer to PC for analysis. Compact, battery powered design for placement where fixed power is not available, with an optional adaptor for longer deployments. Specifications summary Model: Model87601 Temperature range: 5 to 50 C Temperature resolution: 0.1 C, 0.1 F Temperature accuracy: plus or minus 0.6 C Humidity range: 0.1 to 99.9 percent RH Humidity resolution: 0.1 percent RH Humidity accuracy: plus or minus 3 percent RH at 25 C, 10 to 100 percent RH; others plus or minus 5 percent RH Response time: 120 seconds typical LCD size: 40 mm by 25 mm Memory: 8000 points PC download: yes Operating temperature: 5 to 50 C Operating humidity: less than 100 percent Storage temperature: 0 to 50 C Storage humidity: less than 80 percent Water tank refill time: every two weeks Meter size: 178.5 mm by 48.4 mm by 24.7 mm Weight: approximately 250 g Power: 4 AAA batteries or 5 V adaptor (not included) Model87601 is suitable for users who need dependable, downloadable environmental data in demanding settings without adding complexity.