The PST UL series is manufactured by Samlex and is a DC to AC, pure sine-wave inverter that has the capacity of converting 12 V DC to 300 W of pure sine-wave AC power at 120 V, and a frequency of 60 Hz.
The unit is integrated with an overload protection, and has a low battery alarm function. It complies to UL standards, and comes with a removable cable with a 12 V plug adaptor.