1. High reliability, compact structure, small size, and easy to use. 2. Compact size and equipped with a black case, dustproof and durable to use. 3. DB9 adapter terminal, convenient for on-site project and equipment debugging. 4. Copper base for PCB carrier, anti-oxidation, all signal ports are named and clearly labeled. 5. Nine signal lines are available for the various pin connections required for serial communication industrial controllers. Product Type: Serial to Terminal Adapter Case Color: Black Circuit Board Voltage: 1A Terminal: Uses 3.81mm terminal spacing Socket: OD=10MM Type: Screw type (2 male headers) Material: Metal nickel-plated copper pin Torque: 0.2Nm (1.7Lb-In.) Assembly: Meets RoHS high-quality assembly Single product size: Approx. 5.7 x 3.4 x 2 cm / 2.2 x 1.3 x 0.8 inches Weight: Approx. 61g / 2.2oz 2 x Connector 4 x Screw Stud 4 x Screw 2 x Screw Mat