Detailed Answer
Antenna gain (dBi) measures an antenna's ability to concentrate radiation: the higher the gain, the stronger the signal in a specific direction. Industrial remote controls commonly use 2–5dBi antennas; an external high-gain antenna (5dBi+) can improve communication distance by 30%–50%. The LIDER LD series comes standard with an antenna of about 2dBi and offers optional external antennas to extend coverage. Note: high-gain antennas are more directional, so aim them at the coverage area during installation.
| Standard | About 2dBi |
| External | 5dBi+ |
| Effect | Distance +30~50% |
Note:For workshops with wide coverage needs, an optional high-gain antenna makes a clear difference.