R718F2 Is A 2-Gang Open/Close Detection Sensor That Utilizes 2 Reed Switches To Detect Whether Two Objects Are Separated Or Not. An Example Of R718F2’S Application Is To Detect The State Of A Door Or Window For Security Purposes. It Is Based On SX1276 Wireless Communication Module, And The Communication Is Fully Compatible With LoRaWAN™ Protocol (Class A).