Progressive Industries EMS-HW50C Heavy Duty RV Surge Protector, Black, 50 Amp
NEW Progressive Industries EMS-HW50C EMS Hardwired Surge Protector FREE SHIPPING
Factory setting 15 seconds but can be adjusted to a 2 minute 16 seconds (136 seconds) delay for A/C Protection. Frequency Protection (Low <51Hz, High 69HZ).