RC-4HC Temperature Humidity Data Logger Digital USB Data Logger Built-in NTC Sensor Thermometer Data Logger High Precision Specification: Temperature measuring range: -30~+60 (Internal sensor) for optional external sensor: -40~+85 (optional external sensor) Temperature Accuracy: +/-0.5 (-20/+40) +/-1.0(other range) 3%RH(25 20%RH to 90%RH) 5%RH(other range) Temperature Resolution: 0.1 ,0.1%RH Data Storage capacity: 16000 points readings Record interval: 10s~24hour adjustable Stop Mode: Button, software or stop when full Validation Certification: Hardcopy Certifications: EN12830, CE, RoHS Connection Interface: Mini USB Alam Configuration: Optional, only 2 points Software: ElitechLog Win or Mac(latest version) Report Generation:PDF&Excel report by Elitech software Power supply: 1years^1/CR2450 battery cell(do not included) Battery life: in normal temperature, if the record interval sets as 15 minutes, it could be used above one year. Item Size: approx. 84 (L) x 44 (W) x 20 (H) mm (3.3 x 1.73 x 0.79 inch) Package list: 1 x Data Logger 1 x External Sensor 1 x USB Cable 1 x Instruction Manual Kindly Remind: 1. Please store the logger in indoor environment. 2. Do not use the logger in corrosive liquid or exceive heat environment. 3. If this is the first time you use the logger, it is suggested to connect the logger to a computer to sync the time. 4.Please dispose or handle the waste logger properly by local legislation.