APP Download:
https://1drv.ms/u/s!AgIwyXAQlpRrctFR9FvUtM71FAE?e=nN0bmy

The module uses HID technology, without any drivers, plug and play.
Support WIN7/XP 32/64-bit systems, easy to use and simple.
Onboard square USB interface connection stable.
High-performance USB controller chip, military grade PCB board production.
12V relay, the relay can control the maximum 250V 10A AC load and 30V 10A DC load.
Reserved 4, 8-way power interface, connected to power, even if the computer off or unplug the USB from the computer, you can also relay remains set. 1-way and 2-way no power connector.
Control terminals Connection: NC / COM / NO.
Voltage: DC 12V Load: 250V 10A AC / DC 30V 10A Max .
Fixing hole size: 3mm.
Mounting holes center distance: 52.2mm * 36.6mm.
Support System: WIN7 / XP 32/64 bit systems.
Size:71.6*65.3*20mm.
* Windows software
* PCB parameters: FR4 / 1.5mm / two layers / metalized holes / HAL / white stamp / solder mask.

Application:
Robotics control
Home automation
Control doors and windows via windows system
Controller power supply

Package included:
1 x 4 channels USB relay

Note:
* When the board is connected to the PC and the PC is restarted, the relays will be toggled several times. This is because of the structure of the FTDI chip.
* The device must be supplied with 12V DC or order to work.
* There is no protection against reversed voltage! If the VCC(+12V) and GND are reversed the board will be damaged!
* The board can not work without computer.
* If you need our software, please contact our customer service via email.