1、Industrial grade STC microcontroller as the main control chip 2、Onboard 2-way high quality relay with relay with absorbing diode circuit 3、With 1 power indicator, each relay has a state indicator, the light is on and the relay is closed. 4、The relay module can be extended to reach 8 outputs. Note: The relay module should be active high. 5、Module parameters such as module IP address, can be configured through the network Features: 1. Industrial grade STC microcontroller as the main control chip 2. Onboard 2-way high quality relay with relay with absorbing diode circuit 3. With 1 power indicator, each relay has a state indicator, the light is on and the relay is closed. 4. The relay module can be extended to reach 8 outputs. Note: The relay module should be active high. 5. Module parameters such as module IP address, can be configured through the network. 6. Maintain relay status before power down (configurable) 7. Through the internet control, the cloud remote control is protected by local password, which is safe and reliable. Specification: Condition: 100% Brand new Item Type: Module Printed Circuit Board Size: 70 x 50mm / 2.8 x 2in(LxW) Weight: Approx. 50g / 1.8oz Package List: 1 x Module Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.