... type for Selection Automatic Voltage Switch,AVS,Voltage Protector,Power Protector,Sollatek Fridge Guard/Spike Protection//Surge Protection,Multi Guard ... then contact your dealer.In addition to the above protection, the AVS 13RL includes RFI (radio frequency Interference) ... extra spike and surge capability. Thus, the AVS13RL provides protection against over-voltage, under-voltage, power-back surges, ...