Njoy Alvis Series User Manual page 7

4 Important Safety Warnings
The unit is designed only for use within 45Hz to
65Hz (depending on the model) input frequency
and pure sine wave environment. Any other
input frequency or wave form will affect the
voltage range and load capability.
Please DO NOT connect the unit to the
environment with direct current or simulated
sine wave.
To prevent the risk of fire or electric shock,
install the device in a temperature and humidity
controlled indoor area free of conductive
contaminants.
the product's datasheet for the acceptable
temperature and humidity range.)
Don't connect any appliances to AVR, which
exceeds its rated power capacity.
07
(See the specifications in