Huidu A5L
| Function | Parameters |
| Wi-Fi antenna | Connect Wi-Fi antenna to enhance wireless signal |
| Sensor | External temperature, humidity, brightness, wind speed, wind direction, noise, PM2.5, PM10, CO₂ and other sensors |
| 4G/5G antenna | Connect 4G/5G antenna (4G with 1 antenna, 5G with 4 antennas, optional) |
| Power supply | 5V 3A ,12V 1.5A |
| Input network port | Gigabit input network port, connect to computer to debug and release programs, can be used to access LAN or Internet |
| Reset | Reset pinhole |
| Audio output | TRS 3.5mm standard two-channel audio output port |
| HDMI | HDMI IN：HDMI1.4 synchronous signal input interface, support adaptive scaling OTG：Used for debugging or upgrading firmware (default USB 2.0 function, factory configurable) |
| Output network port | Gigabit output network port, cascaded with HD-R series receiving card |
| Ground wire | Ground wire connection port |
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