Appearance
4G I/O Module (Y311)
The Y311 is a lightweight 4G I/O control module that supports one DO channel and one DI channel. It is suitable for scenarios such as device control, status monitoring, communicating with servers via 4G network.
Main Features
- Supports 7~36V DC power supply
- Supports 1 channel 220VAC/10A, 30VDC/10A relay
- Supports 1 dry contact input
- Supports 1 TTL serial port
- Supports external and embedded SIM cards
- Supports TCP, UDP, MQTT, HTTP
Parameters
| Item | Value |
|---|---|
| Power Supply Voltage | DC 7~36V |
| Dimensions | 60×45mm |
| 4G Bands | LTE-FDD:B1/B3/B5/B8 LTE-TDD:B34/B38/B39/B40/B41 |
| AI Range | 0~10V 4~20mA |
| Operating Temperature | -35~75℃ |
| Operating Humidity | 5%～95% |
| Relay | 1 |
| Input | 1 |
| Output | 1 |
| TTL | 1 Parameters: 1200-460800, Data bits: 8, Stop bits: 1, Parity: Odd, Even, None |
Size
Details
| No. | Label | Function | Description |
|---|---|---|---|
| 1 | VIN GND | Power Supply | VIN indicates the positive power supply, GND indicates the negative power supply. Voltage range: 7~36V, 10W power, recommended voltage above 7V |
| IN COM | Dry Contact Input | Dry contact input, triggered when IN and COM are connected, IN LED will be constantly on | |
| 2 | 4G Antenna | SMA interface, compatible with IPEX pad, optional soldering | |
| 3 | SPK+/SKP- | Speaker Port | Can directly drive 8Ω 2W speaker, can be used for TTS broadcasting, voice playback, etc. |
| RX / TX / GND | Serial Port | TTL level serial port, with level conversion, compatible with 3.3V and 5V serial levels | |
| 4 | BOOT | BOOT Button | Used with USB to enter BOOT mode for firmware upgrade |
| 5 | Reload | Reload Button | DTU firmware, long press for 7 seconds to restore factory settings |
| 6 | NET LED | System network indicator | |
| STA LED | |||
| IN LED | Dry contact input status indicator, constantly on when IN and COM are connected | ||
| OUT LED | Relay output indicator, constantly on when relay COM and NO are connected | ||
| PWR LED | Power LED, constantly on when powered | ||
| 7 | Relay | 220V AC/10A or 30V DC/10A relay, COM connected to NC (default) or NO | |
| 8 | Relay Interface | COM is the common terminal | |
| 9 | USB | Used for debugging or firmware upgrade. VBUS connects to USB positive, GND connects to GND. Incorrect connection may damage the device | |
| 10 | Embedded SIM Card | Embedded SIM card is stable, does not loosen or fall off. The entire board can be coated with conformal coating. The downside is that the card cannot be replaced | |
| 11 | External SIM Card Slot | External medium-sized, self-ejecting SIM card, notch facing outwards, chip facing the module |