The Onset HOBO UX90-004 Standard Motor On/Off Data Logger records motor on and off conditions within an AC magnetic field with its internal sensor, or mechanical contact closures from external sensing devices. This data logger is ideal for tracking the usage and runtimes of motors, pumps, compressors, and other equipment. The HOBO UX90-004 Light On/Off Data Logger offers 128 KB memory, capable of 84,650 measurements; the UX90-004M model offers an expanded 512 KB memory, capable of over 346,795 measurements.
Note: UX90-004 data loggers require the HOBOware software (free to download) to operate. Please also note that a USB interface cable comes with the purchase of a HOBOware Pro CD (BHW-PRO-CD), only.