Features32000 series features reduced noise filtering for optimum compatibility with LevitonĀ® DecoraĀ® home control and X10 communication network devicesParallel operated design features 40 mm Dia, metal oxide varistors and EMI/RFI filter circuitry equipped with high voltage rise capacitors for harmonic toleranceEquipped with indicator lights and audible alarm for monitoring power and surge suppression status3-phase units are suitable for both WYE and DELTA alternating current systemsParallel hardwired via 12 AWG wire connectionTransient voltage surge suppression moduleWithout surge counterDHC and X10 compatible