PowerBright provides a basic tutorial on the operation of their modified sine wave power inverters. The product supplies an alternate power supply utilizing current from a 12 volt battery.
Our tutorial video provides instruction on setup and basic operation:

Instruction video for the XR100-12 / XR175-12

Instruction video for the XR400-12

Instruction video for the PW1100-12

Instruction video for the PW1500-12

Instruction video for the PW2300-12

Everything we sell on is kept in-stock and should ship the same day as long as the order is placed on a Business day and before 3:00 PM EST.
In the extremely rare case that we run out of stock, we will either give you a free upgrade or a 10% discount once the product arrives to our warehouse. Upgrades only apply when difference in value is less then 10%. Limit 1 upgrade per household.