Features:<br>1.Thisisa4Channel12VRelayOutputBoardModule.<br>2.Easytoinstall.<br>3.Goodquality,durable.<br>4.Portabledesign,easytooperate.<br>5.Lowpower,highprecision,RS485/TTLCommunication.<br><br>Descriptions:<br>Thisisa4Channel12VRelayOutputBoardModule,Lowpower,highprecision.<br><br>Specifications:<br>Color:green<br>Itemsize:7.6x6.6x1.5cm/3x2.6x0.6in<br>Itemweight:79g/2.79oz<br><br>Packageinformation:<br>Size:148x109x15mm/5.8x4.3x0.6in<br>Weight:81g/2.86oz<br>PolybagPackage<br><br>Packageincluded:<br>1xRelayOutputBoardModule