Description
XH A252 Digital Bluetooth 5.0 MP3 Audio Receiver Board 3.5mm AUX Jack Output MQ 135 Gas Sensor Module For NH3 Output Connectors: VGA (D Sub 15 pin) Output Connectors: VGA (D Sub 15 pin) + 3 or solenoid) to the relay terminals marked NO (Normally Open) and COM (Common) XH A252 Digital Bluetooth 5 0 MP3 Audio Receiver Board 3