The SSI MediaGauge™ family of digital pressure gauges has four models. The MG-9V is a stand alone 9V battery operated model that utilizes a stainless steel diaphragm for harsh media isolation with a 0.25% full scale accuracy. The MG-MD is an externally powered model of the MG-9V, which also features two programmable set points, a 4-20mA output, and a switch. The MG1-9V is a lower cost stand alone 9V battery operated model which has 1% full scale accuracy that utilizes a stainless steel diaphragm for harsh media isolation.