ESP8266-01S module

HM-T series FSK transmission moduleFEATURESHIGHLY INTEGRATED, SMALL SIZEHIGH SENSITIVITY, LOW POWER CONSUMPTIONFSK TECHNOLOGY, SUITABLE FOR REPLACING ASK MODULESLESS INTERFRENCE, LONGER

UNIVERSAL ISM BAND FSK TRANSCEIVER MODULERFM12B is a low costing ISM band transceiver module implemented withunique PLL. It works signal