Loggers
Devices with a logger function allow, in addition to their main functions, to store measured values in a non-volatile memory (up to 60,000 records) with a specified time interval (1 ... 9999 min.).
Alarm meters / indicators with GSM-logger function (I4l-GSM, I8l-GSM, I16l-GSM, I32l-GSM)
Price range: $349 through $421
PID controllers with logger function RP2l, RP4l
Price range: $117 through $197