The Dwyer AQTIA-WDPM-005 Air Quality Test Instruments combine the versatile Model UHH2 handheld base with the WDPM wireless Differential Pressure Module. The versatile combination of the AQTIAWDPM005 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 AQTIA-WDPM-005 Differential Pressure Module can read pressure limits of ± 5 in w.c. (± 1250 Pa). The AQTIA-WDPM-005 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..