ABS fire-retardant plastic case. 8 grounded outlets including 3 spaced for large transformer blocks. 6' SJT14AWG x 3C heavy-duty power cord. 15 amp on/off rocker switch and resettable circuit breaker. EMI/RFI noise filter. Red light indicates that surge protection is functioning properly. Green light shows unit is properly grounded. Models CCS25107, CCS 25108, CCS25117 and CCS25118 features alarm that sounds should internal surge protection fail. Surge circuit and power safety shutdowns. UL clamping 339V. Rated at 125 volts, 15 amps. U.L. listed. Mounting holes.