Specification: Origin: Mainland China Type: Drive IC Condition: New 1. Industrial-grade STC microcontroller as the main control chip 2. 2-way high quality relays on board, relays with absorption diode circuits 3. With a power indicator, each relay has a status indicator, the light is on the relay is engaged 4. You can extend the relay module to reach 8-channel output, note: the relay module should be active high level. 5. Can be configured through the network module parameters, such as module IP address, default knack, etc. 6. Maintain the relay state before power down (configurable) 7. Control via internet, cloud remote control is protected by local password, safe and reliable. 8. Support 5V or 9-24V input voltage. 9. 1.6mm thick PCB made of grade FR-4 sheet, PCB size 70mm*50mm/2.73*1.95in, pre-drilled mounting holes Product Size: 70.00x50.00x17.00mm/2.76x1.97x0.67inch Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1*TCP/UDP Controller Module WEB Server 1.Industrial-Grade Ethernet Relay: Control and switch with ease using this TCP/UDP controller module web server, featuring dual Ethernet relays. Its stable firmware, powered by an industrial-grade STC microcontroller and ENC28J60 chip, supports up to 6 network connections in TCP server mode. It also offers UDP control and cloud remote control capabilities. 2.Simple Control Commands: Experience effortless control with this web server relay board delay switch's straightforward and easy-to-use command instructions. You can quickly master the control process without any complications or steep learning curves. 3.Comprehensive Development Support: Unlock endless possibilities with full support for secondary development. Whether it's local connections, cloud remote control, or demonstration programs for PC and mobile devices, this TCP UDP controller module relay board provides sample codes and SDKs. 4.Expandable Hardware: Profit from the hardware expandability of this relay switch delay board web server, allowing you to connect and expand functionality according to your specific needs. It provides flexibility for customization and integration into existing systems. 5.Powerful 8-bit Instruction System: Leverage the strength of the powerful 8-bit instruction system, offering versatile functionality at a low development cost. With its feature-rich capabilities and competitive pricing, this TCP/UDP controller module provides excellent value for money, tailored to meet your unique requirements.