Chelsea’s Electronic Overspeed Controls (E.O.C.) for its powershift PTOs is a shift option used to protect auxiliary power equipment such as hydraulic pumps, generators and product pumps. It insures that the driven equipment operates within the operating limits required for varying applications. The E.O.C. is smaller in size than the original version, which greatly simplifies installation. No special tools, computers or equipment is required to set the high and low operating limits. This E.O.C. uses solid-state components in a tamper-resistant housing that has been tested to comply with all RFI and EFI emissions that may be found in trucks equipped with two-way radios.