1. High-quality material: This 10A-120A Solid State Relay SSR DA AA DD Aluminum Fins Single Phase Aluminum Heat Sink Dissipation Radiator Rail Mount is made of premium aluminum, ensuring durability and efficient heat dissipation. 2. Versatile compatibility: Designed to fit a variety of applications, this relay is compatible with a wide range of devices and systems. From industrial machinery to home automation, it offers reliable performance. 3. Efficient heat dissipation: The aluminum fins on this relay's heat sink provide excellent thermal conductivity, allowing for quick and effective heat dissipation. This ensures the relay stays cool even during extended periods of operation. 4. Easy installation: With its rail mount design, this relay can be easily installed in setups. Whether you're a professional or a DIY enthusiast, you'll appreciate the convenience and simplicity of the installation process. 5. Reliable performance: Built with attention to detail and tested for quality, this relay delivers consistent and dependable performance. It is designed to handle high currents and maintain stable operation, making it a reliable choice for your electrical needs. Material:aluminium colour: silver Package Contents: 1 x Solid State Relay Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.