USB Relay Controller, 8-Channel Relay Module Controlled by USB Type B DC 12V, Programmable Computer Controller for Automation and Robotics

This 8-channel USB-controlled relay board uses HID technology, so no driver installation is required on your Windows system. It's convenient and very easy to use. It can be used for simple on/off electrical devices, such as household lights, DC motors, solenoids, and more. It can also help you with robotics and home automation projects. Each board requires a USB port. The more USB ports you have, the more relay boards you can connect. The board cannot function without a computer. Specifications: Relays: 10 A 250 V AC / 10 A 125 V AC / 10 A 30 V DC / 10 A 28 V DC Power Supply: 12 V DC Current Consumption: 300 mA Dimensions: 93 x 70 x 16 mm Software Examples: VB6, BCB6, Java (NetBeans), VB.NET 2010 Express, C--, NET 2010 Express PCB: FR4 / 1.5 mm / two-layer / plated through-holes / HAL / white stamping / solder mask Contents: 1 x 12 V 8-pin USB Relay Board 1. The 8-channel USB Type-B relay requires a 12 V DC power supply. 2. When the board is connected to the PC and the PC restarts, the relays will cycle multiple times. This is due to the FTDI chip design. 3. Additional openings on the PCB provide improved voltage isolation. 4. Doubling of high current traces. 5. There is no reverse voltage protection! If VCC (-12V) and GND are reversed, the board will be damaged.