Detailed Answer
Antenna selection: 1. Frequency band match (433/470 MHz must match; SMA/threaded connector); 2. Gain (standard 2 dBi; choose 5 dBi+ high-gain for large coverage); 3. Length (portability vs. performance balance); 4. Type (rubber antenna/fiberglass antenna). Lider LD series original antennas are matched to the RF parameters; third-party antennas need frequency and connector verification. Verify range after replacement.
| Frequency | 433/470 match |
| Gain | 2~5 dBi |
| Lider | Original matched |
Note:The antenna is a key RF component — don't skimp.