The simple Bluetooth stereo module can run on an operating voltage of 7V. This small board has the dimensions of 4.1 x 3.9 x 0.2 inches and weighs less than 2g.
REMOTE WIRELESS MODULE STABLE WIFI TO UART MODULE
Wireless Module WIFI to UART Module AP STA AP + STA
Lora 915Mhz Module SX1276 Wireless Transceiver Module spread Spectrum Long-Range Wireless Communication LORA/GFSK
