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5pcs HC-05 Bluetooth Module Master-slave Serial Port Communication Board

3pcs HC-05 Bluetooth Module Master-slave Serial Port Communication Board

XH-W3000 -50~100 Degree Micro Digital Thermostat High Precision Temperature Control Switch Heating and Cooling Accuracy 0.1

XH-W3002 Micro Digital Thermostat High Precision Temperature Control Switch Heating and Cooling Accuracy 0.1