Appearance & LED Status
Hardware Appearance

Interface Description by Number
The table below corresponds to the numbers in the image above, explaining the hardware interface functions of the Ethan series:
| No. | Component Name | Description |
|---|---|---|
| 0 | Reset Button | 1. Reboot: Press once to reboot the device. 2. Bootloader Mode: Hold the FUNC button and press the Reset button simultaneously to reboot into Bootloader mode. |
| 1 | LED1 System Status | Indicates the system main program status (see details below). |
| 2 | LED2 OS Status | Indicates the operating system and network connection status (see details below). |
| 3 | FUNC Button | 1. Reset IP: Long press for about 3 seconds to reset IP to default 192.168.1.110.2. Switch Display: Short press to switch OLED pages. |
| 4 | OLED Panel | Displays network settings, firmware version, serial number, and other system status. |
| 5 | 24V DC Input | Power input interface, 24V DC. |
| 6 | Protective Earth (PE) | Ground terminal for safety and noise immunity. |
| 7 | Ethernet Port | 10/100M Ethernet interface for data transmission and communication. |
LED Status Indicators
LED1: System Status
| Behavior | Status Description |
|---|---|
| Blinks at Startup | Main program initialization normal (blinks twice) |
| Steady On | System running normally |
| Periodic Blink | Error occurred |
LED2: OS Status
| Behavior | Status Description |
|---|---|
| Blinks at Startup | Bootloader initialization normal (blinks twice) |
| Steady On | Bootloader running |
| Periodic Blink | OS running normally |
| Freq 4 Hz | Ethernet cable connected |
| Freq 2 Hz | Ethernet cable disconnected |
| Off | OS stopped |