C1D2 Industrial Wireless Sealed Gauge Pressure Sensor, Op. Range 0-1000 psig, Accuracy ±0.5%, 1/4" NPT Male Connector, 2 Mile Signal Range, IP65 + Hazardous Locations Certified (UL 121201 9th Ed., Cl. 1, Div. 2), Uses 6 x AA Batteries (Not Included).