DataChart® Compact Data Loggers are ideal for collecting data where large complicated recorders just won't fit. Our compact loggers are all battery-powered, some models for up to 10 years. They are robust and reliable. Each recorder is programmed by the user with our graphical Windows® software. Plot and graph your results, compare trends from multiple recorders even view data in "real-time". Our software is very intuitive with familiar Windows® features. Special features allow for complete wireless operation or use your Palm® to download readings from any of our data loggers.