Does the Air Suspension Gauge come with a pressure sensor?

Depending on which Air Suspension Gauge you are looking at, it may or may not include an Air Pressure Sensor. 

The following do not include the Pressure Sensor and would require the installation of an airline which is not included:

The Tinted 200 PSI Air Pressure Gauge (GS-T13), White 7 Color 200 PSI Air Pressure Gauge (GS-W713), Black 7 Color 200 PSI Air Pressure Gauge (GS-C713) & Tinted 7 Color 200 PSI Air Pressure Gauge (GS-T713) & Mechanical 200 PSI Air Pressure Gauge (GS-MSB-AP-200) & Mechanical 200 PSI Dual Needle Air Pressure Gauge (GS-MSB-DAP-200)

The Air Suspension Gauges that include the Pressure Sensor are as follows:

7 Color Series Dual Needle Air Pressure Gauges (GS-T713-DN, GS-C713-DN, GS-W713-DN), 7 Series Dual Digital Air Pressure Gauges (GS-T713-DD, GS-C713-DD, GS-W713-DD), 10 Color Digital Air Pressure Gauge (GS-TCD13), 10 Color Digital Dual Air Pressure Gauge (GS-TCD13-Dual), 10 Color Digital Quad Air Pressure Gauge (GS-TCD13-Quad), MaxTow Air Pressure Gauges (MT-DV13, MT-BDV13, MT-WDV13, MT-WBDV13)