4 Channel Relay Module DriveFree PC Intelligent Switch Controller PCB Board DC 12V

Feature: 1. Use imported high?performance USB control chip, onboard square USB interface, stable connection. 2. Use the special relay drive chip ULN2803, the relay work is more stable and can be used for a long time. 3. The module uses advanced technology, does not need any driver, plug and play. 4. With strong compatibility, support for WIN7XP 32?bit64?bit system, easy to use. 5. The board power socket and terminal are connected to the power source. After the power is connected, the relay can maintain the setting state even if the computer is turned off. Specification: Item Type: 4 Channel Relay ModuleInput Voltage: DC 12V Input Current: More than 300mA Connection Method: NCCOMNO Relay Parameters: Can control AC 250V, 10A AC load and DC30V 10A DC load PCB Size: Approx. 71.6 x 65.3mm 2.8 x 2.6in Module Application: Home smart switch control, hotel smart switch, smart greenhouse, Internet cafe timing management, centralized power management, etc.. Package List: 1 x Relay ModuleUse imported high?performance USB control chip, onboard square USB interface, stable connection. Use the special relay drive chip ULN2803, the relay work is more stable and can be used for a long time. The module uses advanced technology, does not need any driver, plug and play. With strong compatibility, support for WIN7XP 32?bit64?bit system, easy to use. The board power socket and terminal are connected to the power source. After the power is connected, the relay can maintain the setting state even if the computer is turned off.