1. Protection function
Physical protection: The housing protects the internal communication contacts from physical damage (such as impact, wear, extrusion, etc.), thereby extending their service life.
Protection against environmental factors: The housing protects the contact from damage caused by the external environment such as dust, moisture, moisture and chemicals, especially in bad weather conditions or industrial environments.

2. Security protection
Anti-electric shock: The shell design can prevent users from accidentally touching the live part, reduce the risk of electric shock, and ensure the safety of product use.
Fireproof/explosion-proof: Depending on the application, the housing can be made of fireproof material or explosion-proof design to enhance the safety of the system.

3. Electromagnetic Interference (EMI) shielding
Electromagnetic Compatibility (EMC) : The housing can be designed as an electromagnetic shield to prevent external electromagnetic interference from affecting communication performance, while reducing internal signal radiation and protecting other electronic devices.

4. Heat dissipation management
Thermal management: The housing design needs to consider heat dissipation to ensure that the heat generated by the device during operation can be effectively dissipated to prevent overheating from affecting the performance of communication contacts and other electronic components.

5. Mechanical support
Structural strength: The housing provides the necessary mechanical support for the internal components, ensuring their stability during operation and avoiding failure due to vibration or shock.

6. Interface design
Connections and interfaces: Enclosures are often designed with appropriate interfaces that can be easily connected to other devices to provide power and signal transmission, such as appropriate plugs, receptacles or connectors.

7. Easy to install and maintain
Convenience: The reasonably designed housing makes the installation, disassembly and maintenance of communication contacts more convenient, reducing maintenance costs and time.

Sum up
The shell of communication contact plays a key role in protection, connection, security, anti-interference, heat dissipation and many other aspects. It not only ensures the normal operation of the equipment and the safety of the user, but also affects the appearance and market performance of the equipment.