A：
Methods for proximity switches to avoid metal interference and mutual interference include:
1. Reasonable arrangement of installation location: Ensure that the proximity switch is kept at a sufficient distance from the surrounding metal to prevent metal from affecting its magnetic field.
2. Use shielded proximity switches: Shielded proximity switches have stronger anti-interference capabilities and are suitable for metal-intensive environments.
3. Maintain appropriate spacing: When multiple proximity switches are installed side by side, the minimum spacing should be maintained according to the instructions to prevent overlapping sensing areas from causing mutual interference.
4. Use models with different frequencies: Some models support multi-frequency design, which can reduce the possibility of mutual interference.
5. Use filter circuits or anti-interference modules: Improve the overall anti-interference performance of the system.
