The WEPS04 wireless pressure module is a battery (CR2050) powered Bluetooth sensor manufactured for simple measurements on a variety of applications. This silicon pressure sensor was designed to supply an economical solution for industrial, consumer, and commercial applications. The sensor can communicate with the host Android device up to 100 feet (LOS) away. For long-range wireless applications, consider the Phoenix Sensors WEPS05 series. Phoenix Sensors is a US manufacturer of pressure sensors like the WEPS04 series.