The WolfPack TOX by GrayWolf Sensing Solutions is a Portable multi-gas photo-ionization detector which comes with three probes having 6 sensors individually. It has a capability of measuring 21 parameter simultaneously when used with an additional tools such as particle counter, airspeed probe and other sensors. Also, other probe can be easily connected to a Windows Mobile Pocket PC or Windows 7 OS mobile PC which is portable and suits to walk-through applications. For this model, it comes with variation of parameters such as TVOCs, Carbon Dioxide, %RH, °C/°F, Particulates, auto-zeroing Differential Pressure, Barometric Pressure and Air Velocity. In addition, the unit is equipped with 18 specific electrochemical gas sensor which covers a lot of elements. Plus, for easy visualization it has a tactile colored screen powered by Windows operating system.