Features: New and high quality USB 2.0 full speed compatible, standard HID-class devices—no custom driver required, 8 GPIO with configurable options. All customization and configuration options can be selected through a simple GUI-based configurator. Since there is no need to develop complex firmware, CP2112 devices can achieve USB connection with minimal development work. Integrated USB transceiver; no external resistor required, integrated clock; no need for external crystals. No firmware development required, simple GUI-based configurator. Suitable for USB dongle, instrument, controller, point-of-sale product. Specifications: Material: PCB USB bus power supply: 4.0–5.25V Self-powered: 3.0–3.6V Input/output voltage: 1.8V–VDD Operating temperature range: -40°C to 85°C Size: Approx. 29.5 x 21.3mm / 1.16 x 0.83 inches Note: 1. Please allow 1–2 cm errors due to manual measurement; ensure you are comfortable with this before ordering. 2. Due to differences between monitor displays, the image may not reflect the actual color of the item. Package includes: 1 x Communication Module