Warmup SNPPRO-100 Snow/Ice Melt All-In-One Control UnitThe SN0PR0 100 provides advanced patented and patent pending ground fault equipment protection (GFEP} as required by the USA and Canadian National Electric Codes. The GFEP automatically tests itself every time the heater contactors operate and once every 24 hours. The trip current can be set at 60 or 120 mA via an internal switch or retained at the 30 mA default value. As an aid to troubleshooting heater ground faults, the SN0PR0 100 provides an