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Electronics-Salon 4 SPDT 10Amp Power Relay Module, DC 5V Version. auspowers_batchfive also it can charge forElectronics Salon 4 SPDT 10Amp Power Relay Module, DC 5V Version. 4 Channel SPDT power relay module, high quality JS1 5V F 10Amp relays. Darlington transistor circuits drive relay coil, LED indicator for each relay channel. High quality screw terminal block. FR 4 fiber glass PCB, dual copper layers. Dimensions: L80mm x W72mm x H15. 5mmOperating Voltage Current (VCC): 3. 8 to 7. 5VDC 350mA(at 5VDC). Control signal voltage (IN X): 0V 0. 5Vdc (low