LM-X12 use Opulinks's WiFi +BLE 2 in 1 chip which supports Wi-Fi 802.11b & Bluetooth 5.0.

Product Specifications	Model Name:	LM-X12
Item		Spec Description
Basic Feature	Mechanical Size/Dimension	24 x 16 x 2mm
	Power Votage Range VDD	DC1.8V ~ 3.6V
	Temperature Range	-30 ~ +75°
	Physical Interfaces	GPIOs/I2C/SPI; UART; PWM/12bit-ADC; UART
	Application Input/Output	Genearl
	Wireless Connection	WiFi + Bluetooth/BLE
IoT Networking	On-site control modes	Single link (P2P), Group Triggering(P2MP)
	On-site Triggering response	Response to APP console, BLE Beacons on Scene/Events
	Networking mode	MP2MP mesh, cooperative proxy networking
	Max Qty of Single Group	64 ~ 128 TBD
	API to cloud server	TCP, HTTP
Bluetooth	Core specification	V5.1/5.0, V4.x compatible
	Frequency range	2.4G ~ 2.48G (2401MHz～2479MHz)
	Supported data rates	N/A
	BLE roles/modes	Beacon scan/broadcast, connection/GATT@Host/device
	Tx power	+6dBm with additional PA
	Rx sensitivity	-92dBm
	Wireless range	30m~50 meters @ free space, by modes typically
WiFi	Frequency range	2.4G ~ 2.48G (2400MHz ~ 2483.5MHz)
	WiFi band	802.11 b/g/n
	WiFi roles/modes	Station/SoftAP/SoftAP+Station, Infrastructure BSS
	Network protocol	IPv4, TCP/UDP/HTTP/FTP/MQTT
	Tx power	+20dBm/17dBm/14dBm for 802.11b/g/n
	Rx sensitivity	–91dBm/-75dBm/-72dBm for 802.11b/g/n
	Wireless range	50~100 meters, typically @ free space