The SMARTlogger Time-of-Use data loggers are designed to monitor the on-off status and total time-of-use data. SMARTloggers provide the operating schedule for energy-consuming devices or systems. Models are available for lighting systems (TOUL-4G), motor loads (TOUM-4G), switches and relays (TOUC-4G), or virtually any electric load generating at least .25 amps (TOUCT-4G).