Manufacturer removed the Prostat configurator app. 

WIRELESS TEMPERATURE SENSOR, COMPATIBLE WITH Wi-Fi THERMOSTATS, INDOOROR OUTDOOR USE(NOT TO BE MOUNTED IN AREAS RECEIVING DIRECT RAIN OR SNOW), EASY SETUP USING THE PROSTAT CONFIGURATOR APP, AUTOMATIC TEMPERATURE AVERAGING, UP TO 8 SENSORS PER SUBNET, DIMS:2 1/2"H X 2 1/2"W X 1 1/8"D, WEIGHT:1 OZ, IN MFG BOX, MADE IN CHINA.**(BATTERIES INCLUDED)**