H201 RF Receiver Module + RF Transmitter Module (433MHZ)

Infrared (IR) Wireless Remote Control Module HX1838

2.4GHz Wireless Transceiver Module (NRF24L01, onboard antenna)

NRF24L01 2.4GHz Wireless Transceiver Module

4.0 Bluetooth Module (CC2540/CC2541 HM-10)

Serial Wireless WIFI Module (ESP8266 ESP01)

ESP8266/ESP01 Serial Wireless WIFI Transceiver Module (3.3V)

GSM/GPRS 900/1800 MHz Short Message Service SMS Module DIY KIT M590E

FM Stereo Radio Module RDA5807M Wireless Module

433Mhz Superheterodyne Wireless Receiver Module (315M RXB6)

UART 125Khz EM4100 RFID Key Card Module (RDM6300)

Ethernet LAN Network Port Module (ENC28J60)

125KHz RFID Reader Module (5V, UART 3Pin, EM4100)

CC1101 RF1101 Wireless Transceiver Module with SMA Antenna

NEO-6M GPS Module

GPRS + GSM + GPS Shield A7 (SMS, Voice Calls & GPS Location)