Features: Material: Theelectric relay is made of high-quality material it is a industrial grade circuit board which can enhance anti-interference capability. with Clear Interface: The electric relay has a clear interface you can see many different push-button on it super easy and conveninet for you to use. with One-Button Emergency Stop Function: With the one-button emergency stop function and reverse connection protection it is safe to use both for home or factory. with Sleeping Mode:The sleep mode is added. If there is no operation within 5 minutes after using it will be automatically closed. After-Sale Service: If you have any questions you can always contact our customer service. We will answer your questions as soon as possible. Your satisfaction is our first pursuit. Specification: Material: Plastic Color: Black Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. includes: 1*Relay