Detailed Answer
Annual deep factory inspection is recommended (Lider offers an annual inspection service): 1. RF performance (transmit power/sensitivity/frequency deviation); 2. Sealing performance (re-test of protection rating); 3. Key life remaining; 4. Battery health; 5. Internal cleaning / conformal coating touch-up; 6. Parameter calibration. In harsh environments (dust/salt spray/high temperature), every 6 months is recommended. Keep inspection reports on file.
| Interval | Annual |
| Harsh environment | Every 6 months |
| Content | RF + sealing + calibration |
Note:Annual inspection is key to preventive maintenance.