Detailed Answer
Frequency band selection: 433MHz: most widely used, good compatibility, but many devices on this band (higher interference risk); 470MHz: cleaner band, better diffraction, longer range (LDER LD series), recommended for multi-device factories; 2.4GHz: large bandwidth but weak penetration (only some XINGJIA monitoring models). Rule: multi-device/complex environments → 470MHz; simple scenarios → 433MHz is fine.
| 433 | Widely used / more interference |
| 470 | Clean / better diffraction |
| 2.4G | Monitoring only |
Note:If many devices share the site, prioritize 470MHz.