OTC Daihen Digital Inverter DP-400 Welding Machine
Model: DP-400
Date: 2012
Serial Number: P10355  Ver. 010.100.000
Energy Input: 208V     59.4A     42.0A
                         230V     53.7A     38.0A
                         460V     29.6A     20.9A
Welding Output: 30A/15.5V to 400A/34.0 V
This unit is equipped with a digital readout.

Wire Feeder (Included)
Model: CM-741U
Date: 2012
Serial Number: U30007YP1025030

This Machine is capable of pushing wire from.030"-.062" in mild steel solid, mild steel cored, soft aluminum, hard aluminum, stainless solid, and stainless cored. Has the ability to weld in pulse mode or inching mode. 

The (21) keys are as follows and are detailed to explain the capability of this machine; Welding Method Key, Wire/Gas selector, Wire Dia., IPM selector key, V/± selector key, Parameter adjusting knob,Crater-Fill key, Display Change key, ARC Control key, Wave Pulse key, Spot Time key, Function key, Initial Current key, Volt Control key, Constant Penetration key, Torch key, Gas Check key, Inching key, Load key, Save key, Enter key.

The rolling cart in the pictures is an included item.