They are electronic devices whose purpose is to count the time and execution of predetermined tasks in the electrical commands through the opening and / or closing of electrical contacts.
In the refrigeration area, these devices are responsible for delaying the start of compressors, counting the running time of refrigerating machines and performing periodic defrost cycles.
These devices are basically classified as: Timers with delay in energizing; Timers with de-energization delay; Cyclic timers.
