4 Channel Relay Module DC12V Computer USB Control Switch Drive ULN2803 Chips
Onboard square USB interface, stable connection
Use imported high-performance USB control chip
Using a dedicated relay driver chip ULN2803, the relay work more stable
Use genuine pine music relay
Military grade PCB board production
Board power outlet and terminal, two access power mode convenient and flexible. After connecting the power, even if the computer shut down or USB from the computer pull out, the relay can also maintain the set state.
PCB size: 71.6mm * 65.3mm
Fixed hole size: 3mm, fixed hole center moment: 67.4mm * 61.3mm
Input voltage: DC 12 V
Input current: greater than 300mA
Wiring method: NC / COM / NO
Maximum control AC 250V, 10A AC load and maximum DC30V 10A DC load