Data recording equipment helps to store, organize, and accurately document measurements and other important data. Nonelectrical properties data loggers and accessories record and store sensor readings. Circular chart recorders and accessories record measurements on circular graphs. Electrical properties data loggers record and store measurements from electrical sensors. Strip chart temperature recorders and accessories log the ambient temperature over time. Portable KWH (Kilowatt Hour) recorders and monitors connect between an appliance and the grid power and measure its energy usage. Recorder sensor kits connect to compatible recorders and provide sensor data. Flash drives transfer data between compatible recorders and a computer.