Detailed Answer
Antenna gain (dBi) measures the antenna's ability to concentrate radiation: the higher the gain, the stronger the signal in a specific direction. Industrial remote controls commonly use 2–5 dBi antennas, and an external high-gain antenna (5dBi+) can improve range by 30%–50%. The LDER LD series ships with an antenna of about 2dBi and offers external antennas as an option to extend coverage. Note: high-gain antennas are more directional — aim them at the coverage area when installing.
| Standard | about 2dBi |
| External | 5dBi+ |
| Effect | Range +30–50% |
Note:For workshops with wide coverage needs, the high-gain antenna option works noticeably well.