ULN2003 Stepper motor driver

HM-R series FSK receiver moduleFEATURESHighly integrated, small sizeHigh sensitivity, low power consumptionFSK technology, suitable for replacing ASK modulesLess interference, longer

HM-TRP Series 100mWTransceiver modulesFeatures
 Low cost, high performance , high reliability
 FSK modulation, 2-way half –duplex communication, strong anti-interfere
 433/470/868/915MHz

2.4GHz transceiver with an embedded baseband protocol engineWorldwide 2.4GHz ISM band operation，Free license to use126 RF channelsHigh air data rate: