Can a HS300 be plugged into a power strip, another surge protector or an uninterruptible power supply (UPS)?

No. The HS300 power strip must be directly plugged into a grounded outlet to work.

NOTE: UL Safety Standards, the National Electric Code and several other local codes prohibit power strips, surge protectors or UPS units to be daisy-chained. By doing so the user voids the Warranty and may also void any insurance coverage should there be an incident.