4.
3. Protective Features
Caution
！
Connect the unit to batteries with a normal output of 12V DC only. As 6V
batteries voltage is too low, and a 24V battery voltage is too high which will
damage the unit.
Additional Safety Guidelines
！
Do not insert any foreign objects into the unit outlets, vents or fan
openings.
Do not expose the unit to rain, water or any other liquid.
Do not connect the unit to any utility power distribution systems or
branch circuits.
Do not use the inverter in temperatures over 104°F(40°C) or under
32°F(0°C).
Failure to follow these safety guidelines will result in personal injury
and/or the damage to the unit. It may also void the warranty.
Caution
！
Some chargers for small nickel-cadmium batteries can be damaged if
connected to the unit. Do not use the unit on the following items:
Small battery-operated appliances such as flashlights, razors and
nightlights those can be plugged directly into an AC outlet to recharge.
Certain battery chargers for battery packs used in hand power tools.
These chargers will have a warning label indicating that dangerous
voltages are present at the battery terminals.
Over-input Voltage Shut off
When the 12 V DC power supply voltage exceeds 15.5 ± 0.5 V, the inverter will
automatically shut down, and the digital display showing “OUP”.
Low-input Voltage Shut off
When the 12 V DC power supply voltage drops below 10.5 ± 0.3 V, the inverter