Table 1.

Technologies of [11,12,13,14,15,16,17,18].

Reference Number	Technologies
[11]	LoRa
[12]	CDMA, Zigbee
[13]	Machine vision
[14]	$I^2$C, GSM, Wi-Fi
[15]	IoT
[16]	LoRa
[17]	PLC, NB-IoT
[18]	GSM, Wi-Fi