Digital loggers iot relay raspberry pi

IoT LoRa Node pHAT allows you to create an inexpensive LoRa node, compatible with The Things Network, in conjunction with a Raspberry Pi or other single board computers. Compatible with Raspberry Pi models A+, B+, 2B, 3B, 3B+, 4, Zero, and Zero W. GPIO of Raspberry Pi as Input. From the above statements, it is clear that if the Raspberry Pi wants to read the value from an external device, the corresponding GPIO pin must be declared as an Input Pin. But when a GPIO Pin of the Raspberry Pi is declared as Input, it must be ‘tied’ to High or Low or else it is called as a Floating Input Pin.