The Ebyte E150-400T22S is a multi-functional 22dBm LoRa wireless serial acquisition and control module operating at 410.125 to 493.125MHz with PA LNA, achieving up to 5.6km communication distance with integrated 4DI digital inputs, 4DO digital outputs, 12-bit ADC, 8-bit DAC, PWM, and Modbus RTU protocol support in a compact 31x18mm SMD package for industrial IoT telemetry and automation.
| Technical Parameter | E150-400T22S Specification Details |
|---|---|
| Operating Frequency Band | 410.125 to 493.125 MHz (Default: 433.125 MHz) |
| Max Transmitting Power | 22 dBm (21.5 to 22 dBm configurable, with PA+LNA) |
| Receiving Sensitivity | -148 dBm (at 2.4 kbps air data rate) |
| Reference Distance | 5.6 km (Clear outdoor sight, 5dBi antenna gain, 2.5m height) |
| Air Data Rate | 2.4 kbps to 62.5 kbps (User configurable) |
| Communication Interface | UART Serial Port (3.3V TTL Level) / Modbus RTU Protocol |
| Digital Input / Output (IO) | 4 DI (Switch Input, 0-3.3V) / 4 DO (2 Open-drain, 2 Push-pull) |
| Analog / Control Interfaces | 12-bit ADC (0-5V / 0-20mA), 8-bit DAC, PWM Output (25Hz-65535Hz) |
| Power Supply Voltage | 3.3V to 5.0V DC (5.0V typical, max 5.5V) |
| Power Consumption | TX: 120 mA / RX: 13 mA / Sleep: 2 uA (Software shutdown) |
| Buffer and Packet Size | 240 Bytes max per package (Auto-subcontracting) / 1024 Bytes cache |
| Package / Dimensions | SMD Package / 31.0 x 18.0 mm (5.0g) |
| Antenna Interface / Impedance | IPEX Generation 1 / Stamp Hole Pad (50 Ohm characteristic) |
| Operating Temperature | -40 to +85 degrees C (Industrial grade passive crystal) |
| Main parameters | performance | Remark | |
| minimum value | maximum value | ||
| Supply voltage | 0 V | 5.5 V | Exceeding 5.5V may permanently burn the module |
| blocking power | - | 10 dBm | Less likely to be burned if used at close range |
| working temperature | -40℃ | +85℃ | Industrial grade |
| ADC maximum input voltage | 0 V | 7.5 V | ADC1、ADC2、ADC3 |
| ADC maximum input circuit | 0 mA | 25 mA | ADC4、ADC5 |
| ADC minimum operating voltage | 2.5 V | - | Below this supply voltage, the ADC works abnormally |
| DAC minimum operating voltage | 3.3 V | - | Below this supply voltage, the DAC works abnormally |
| RF minimum operating voltage | 2.0 V | - | Below this supply voltage, the RF part stops working |
| Main parameters | performance | Remark | |||
| minimum value | Typical value | maximum value | |||
| Working voltage (V) | 3.3 | 5 | 5.5 | ≥3.3V ensures normal function | |
| Communication level (V) | 3.3 | Using 5V TTL risks burning out | |||
| Working temperature (℃) | -40 | - | 85 | Industrial grade design | |
| Working frequency band (MHz) | 410.125 | - | 493.125 | Support ISM frequency band | |
| Power consumption | Emission current (mA) | - | 120 | - | Instantaneous power consumption |
| Working current (mA) | - | 13 | - | ||
| Sleep current (μA) | - | 2 | - | Software shutdown | |
| Maximum transmit power (dBm) | twenty one | 21.5 | twenty two | User configurable | |
| Receiving sensitivity (dBm) | -145 | -147 | -148 | The air rate is 2.4kbps | |
| Over-the-air rate (bps) | 2.4k | 2.4k | 62.5k | User configurable | |
| ADC voltage range (V) | 0 | - | 5 | Exceeding this range may cause damage to the ADC | |
| ADC current range (mA) | 0 | - | 20 | Exceeding this range may cause damage to the ADC | |
| DAC pin drive capability (mA) | - | Weak, an external voltage follower may be required according to user needs. | |||
| DO1/DO2 driving capacity (mA) | - | 3.3 | 5 | Open-drain output, driving capability depends on the module’s internal and external pull-up resistor 1K | |
| DO3/DO4 driving capacity (mA) | -35 | 12 | push-pull output | ||
| DI input voltage (V) | 0 | 3.3 | Exceeding this voltage may cause DI damage | ||
| Main parameters | describe | Remark |
| reference distance | 5.6km | In a clear and open environment, the antenna gain is 5dBi, the antenna height is 2.5 meters, and the air rate is 2.4kbps. |
| ADC accuracy | 12 bits | Built-in external reference voltage and voltage follower, power supply voltage needs to be ≥3.0V, accuracy 1% |
| DAC accuracy | 8 bits | Floating point value, power supply voltage needs to be ≥3.3V, accuracy 1% |
| PWM accuracy | Frequency step: 1 Hz | Frequency range: 25Hz~65535Hz, accuracy 1% |
| Duty cycle step: 1% | Duty cycle range: 0~100%, accuracy 1% | |
| Subcontracting method | 240 btye | Maximum capacity of a single package, automatically subcontracted when exceeded |
| cache capacity | 1024 bty | - |
| Modulation method | LoRa | - |
| Communication interface | UART serial port | 3.3V TTL level |
| Packaging method | SMD type | - |
| Interface mode | UART | Users can connect an external RS485 adapter chip, and the control pin has been lead out |
| Overall dimensions | 31.0*18.0 | ±0.2mm |
| Antenna interface | IPEX/stamp hole | Characteristic impedance is about 50 ohms |
Practical Application Scenarios
1. Smart Solar-Powered Agricultural Valve and Fertigation Control Node
In remote precision agriculture, farmers need to monitor soil moisture levels and control hydraulic valves across distant fields without laying kilometers of signal cables. The E150-400T22S serves as a complete wireless remote terminal node by directly collecting 0 to 20mA transducer data through its onboard 12-bit ADC and actuating 4DO switch outputs to drive solenoid relay drivers. Communicating via Modbus RTU protocol over a 5.6km LoRa link to a central gateway (such as an Ebyte E90-DTU or host PLC), it reduces hardware component counts while operating reliably in 2uA sleep mode during battery standby.
2. Industrial Water Treatment Facility Analog Telemetry and Pump Control
Water treatment plants require distributed acquisition of tank level sensors and flow meters alongside remote actuator controls across harsh factory environments. The E150-400T22S integrates 4 DI channels for pump status detection, 0 to 5V ADC inputs for liquid level sensors, and an 8-bit DAC output for proportional valve control into a single 31x18mm SMD module. With built-in PA+LNA achieving -148dBm sensitivity, it reliably transmits Modbus commands through thick concrete structures and metal pipe racks without signal degradation.
3. Smart Factory HVAC and Airflow PWM Speed Control Automation
In automated warehouse or factory climate control systems, fan speed and air damper angles must be dynamically adjusted based on distributed environmental feedback. The E150-400T22S utilizes its internal PWM generator (supporting 25Hz to 65535Hz frequency steps) to adjust variable-frequency motor drives or electronic dampers. By responding directly to wireless LoRa Modbus frames sent from an Ebyte E22 series master module, it eliminates the need for an external microcontroller at each ventilation zone.
FAQ Section
1. How does the all-in-one DAQ functionality of the E150-400T22S eliminate the need for an external MCU in Modbus applications?
The E150-400T22S features an embedded firmware core that directly handles Modbus RTU slave protocol commands over the LoRa air interface. Because the module natively integrates 4DI, 4DO, 12-bit ADC, 8-bit DAC, and PWM peripherals directly on its pins, a master PLC or host controller can read analog sensor data or write digital outputs across 5.6km without requiring a secondary microcontroller (like an STM32 or Arduino) to parse serial packets at the remote node.
2. Can the E150-400T22S intercommunicate with other Ebyte wireless series such as E22 or E90 modules?
Yes. The E150-400T22S supports direct wireless data intercommunication with Ebyte E22-SL and E90-SL series LoRa modules operating in the 410.125 to 493.125MHz frequency range. As long as the RF carrier frequency, air data rate (such as 2.4kbps), net ID, and key encryption settings match, the E150-400T22S can seamlessly send and receive Modbus RTU frames to and from Ebyte LoRa DTUs or wireless gateways.
3. What precautions should be taken regarding IO voltage levels when interfacing the E150-400T22S with 5V industrial systems?
The E150-400T22S operating supply voltage ranges from 3.3V to 5.0V DC (5.0V recommended for full 22dBm output power). However, its UART serial communication and DI digital input pins operate at a 3.3V TTL logic level. Direct 5V TTL logic input without level shifting or current-limiting resistor protection risks damaging the internal MCU logic pins. For 5V PLC or sensor connections, engineers should utilize external level conversion circuits or optical isolators.
4. How does the Wake-On-Radio (WOR) low power mode function on this module to conserve battery energy?
In low-power WOR mode, the E150-400T22S enters a deep sleep state with power consumption dropping to 2uA while periodically waking up to scan the air for a valid preamble signal. When an incoming LoRa data packet is detected, the module automatically fully wakes up, processes the Modbus RTU command, executes the requested DI/DO/ADC operation, and transmits the response back before returning to sleep, allowing years of operation on lithium batteries.
