The overall score covers performance and design. Performance shows the level of protection, based on tests in which we induced hundreds of surges of 2,000 to 6,000 volts to a suppressor-protected computer. We did not test phone-line protection. Design reflects the ruggedness and sophistication of the protection circuits. Comments list useful features and annoyances.
Price is the estimated average, based on a national survey.
Circuit breaker and internal fuses. 6-foot power cord. UL 1449 rating at 330 volts. Modular-style phone jacks. Indicator to show when surge protection has been rendered ineffective.