Descriptions: Micro-channel remote control 2-way remote cloud Ethernet network switch delay relay TCP/UDP relay module controller can be expanded to 8 Control via Ethernet and internet pull 2 relay, the release And can be extended by a pin external relay module to eight outputs Module supports TCP, UDP, cloud remote control three kinds of operation Easy to understand instructions, instruction can specify 1--65535 seconds delay Module is equipped with VB, for Delphi PC program and source code to help you easily computerized remote control TCP and cloud remotely can check the status of all relays Also after each command processing is complete, the module will return to the latest state of all relays UDP mode no status query or other returns Code is extremely simple, easy to be embedded into a variety of applications Full support for secondary development, open TCP, UDP control protocol, cloud secondary development package provides remote SOAP Web Service API interface and RESTful Web Service API interface Module Features: STC microcontroller for industrial master chip Onboard 2-way high-quality relay, relay with absorption diode circuit With 1-channel power indicator, each relay has status indicator lights up and relay The relay module can be extended up to 8 outputs, Note: The relay module should be active high You can configure the module through the network parameters, such as the module IP address, default for gateway, etc Holding relay status before power down (configurable) Through internet control, remote cloud by local password for protection, safe and reliable Supports 5V or 9-24V input voltage 1.6mm thick PCB by the military grade FR-4 sheet material, PCB size 6.8x4.8cm, set aside the mounting holes Specification: Brand new PCB dimensions: approx. 6.8x4.8x1.5cm/2.68x1.89x0.59" Power requirements: DC5V, Micro USB power supply; or DC9-24V Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 Pc x Ethernet module