apc
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Good price on APC UPS - Pure Sine Wave
This is the cheapest I seen this model: https://www.walmart.com/ip/APC-Sine-Wave-UPS-Battery-Backup-Surge-Protector-1500VA-APC-Back-UPS-Pro-BR1500MS/106599341 -Pure Sine Wave -1500VA -Gigabit Connection And you can most likely price match on other sites too.