The Dwyer AQTIAP-WDPM-002-PKIT Air Quality Test Instruments Full Professionl Kit combines the versatile Model UHH2 handheld base with the WDPM wireless Differential Pressure Module. The versatile combination of the AQTIAPWDPM002PKIT with the 160-18 stainless steel pitot tube, 160F straight stainless steel pitot tube, 160G averaging air flow grid, 2 A-303 portable static pressure tips, along with the VP2, RP2, and VP2 this product provides a line of instruments capable of streamlining a technician’s everyday testing by combining all into one product and using Bluetooth SIG, Inc. wireless technology for ease of use. The AQTIAP-WDPM-002-PKIT Differential Pressure Module can read pressure limits of ± 2" w.c. (± 500 Pa). The AQTIAP-WDPM-002-PKIT also comes with the UHH-BTG mobile wireless gateway, which will convert the wireless signal from any Dwyer universal handheld probe or module into a Bluetooth SIG, Inc, Wireless Technology. It also includes a hard plastic case with pre-cut foam inserts for additional sensors.