TSW200 is an unmanaged industrial switch...
The Dragino RS485-LN is a RS485 to LoRaW...
It can detect the movement or vibration ...
TRB140 is an ultra-small, lightweight, a...
The R312A is an emergency button switch device that detects the closing or opening signal of the emergency button switch and sends an alarm signal to the gateway for processing. It uses the SX1276 wireless communication module.