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which is used to connect the control voltage up to 5V
Convenience store cooler doors (to determine if they are not closed all the way)
Bees which do not have ATMega328 like Bluetooth Bee can only be configured by using on-board FT232RL(USB to UART)
narrow detection zone for small targets
MCP3551 is a 2
R718J Netvox LoRaWAN Wireless Dry Contact Interface Frequency:AS923 MHz which is used to connectR718J Netvox LoRaWAN Wireless Dry Contact Interface R718J can be connected to external dry contact devices, such as various switches, buttons, relays and reed switch outputs. It can detect the closure or disconnection signal of the dry contacts. Based on SX1276 Wireless Communication Module, wireless communication is compatible with LoRaWAN Protocol (ClassA). Features: Wireless Range of 10km LoRaWAN Class A compatible Frequency Hopping Spread Spectrum