Power on/off LED indicates whether power is available at the PDU. External ground stud provided on single phase models for secure grounding. Circuit breakers provide additional equipment protection. Circuits are isolated on dual circuit model; each has its own circuit breaker. Reset button provides easy access to circuit breaker reset. Surge protector models have an indicator LED to verify surge circuitry protection. Rack mount models mount directly to rack or with adapter bracket. Rack mount models designed for single phase applications. Panel mount models can be mounted flush or with hanging bracket.