The Ebyte EWM550 series is an ultra-low-power industrial UWB wireless ranging and positioning module built on the MK8000 SoC (CH2 3.99GHz / CH5 6.48GHz / CH9 7.98GHz), offering 30cm accuracy, up to 230m distance, UART transparent data transmission, and 1-to-many TWR two-way ranging for AGVs, robotics following, and warehouse personnel tracking.
Key Features & Advantages
- High-Precision UWB Wireless Ranging (±30cm Accuracy): Powered by the high-integration MK8000 UWB SoC, executing Two-Way Ranging (TWR) algorithms to deliver stable centimeter-level spatial distance measurement.
- Long-Range Wireless Performance up to 230 Meters: Engineered with optimized RF matching and up to 10dBm maximum transmit power, achieving reliable line-of-sight ranging distances of 130m (PCB antenna), 180m (Ceramic antenna), and 230m (IPEX antenna).
- Dual-Band Coverage & Flexible Global Channel Selection: Available in CH2 (3743.6 ~ 4243.6 MHz) and high-frequency CH5/CH9 (6239.6 ~ 6739.6 MHz / 7737.2 ~ 8237.2 MHz) bands, meeting worldwide regional RF spectrum regulations.
- UART Transparent Data Transmission & 1-to-Many Multi-Node Ranging: Supports standard UART communication at up to 921600bps with AT command configuration, facilitating plug-and-play transparent data transmission and simultaneous 1-to-many distance measurement.
- Ultra-Low Power Consumption with Deep Sleep Mode: Operates with typical 45mA transmit current, 62mA receive current, and ultra-low 6.5uA sleep current, significantly prolonging battery lifespan in mobile and wearable tags.
Core Specifications
| Parameter | Specification / Value |
|---|---|
| UWB Core SoC | MK8000 Ultra-Wideband Transceiver SoC |
| Operating Frequency Bands | 3G9 Series: 3743.6 ~ 4243.6 MHz (Default CH2) 7G9 Series: 6239.6 ~ 6739.6 MHz (CH5) / 7737.2 ~ 8237.2 MHz (Default CH9) |
| Transmit Power | 10 dBm (Max at 3.3V) |
| Ranging Precision | 30 cm (Two-Way Ranging Algorithm) |
| Ranging Distance | T10SP (PCB Antenna): 130 m | T10SC (Ceramic Antenna): 180 m | T10SX (IPEX): 230 m |
| Communication Interface | UART Serial Port (Default 921600 bps, 8N1, AT Command Supported) |
| Supply Voltage Range | DC 1.8V ~ 3.6V (3.3V Typical) |
| Power Consumption (@3.3V) | Sleep Current: 5.5 ~ 7.0 uA (Typ 6.5 uA) | TX Current: 40 ~ 50 mA (Typ 45 mA) | RX Current: 58 ~ 66 mA (Typ 62 mA) |
| Operating Temperature & Humidity | -40 deg C to +85 deg C | 10% to 90% RH (Industrial Grade) |
| Dimensions & Weight | T10SP: 14 * 24 mm | T10SC / T10SX: 14 * 19 mm | Approx. 1.2g |
Product Selection Guide
Notice for Selection: Choose between 3G9 Series (CH2: 3743.6~4243.6 MHz) and 7G9 Series (CH5/CH9: 6239.6~8237.2 MHz) based on regional RF regulatory compliance; select T10SP for integrated PCB onboard antenna, T10SC for compact ceramic patch antenna, or T10SX (IPEX connector / bundled FPC antenna) for maximum range and flexible external antenna placement.
| Model SKU | Frequency Band | Antenna Type | Max Range | Dimensions | Power (TX / Sleep) | Interface |
|---|---|---|---|---|---|---|
| EWM550-3G9T10SP | CH2 (3.99 GHz) | PCB Onboard Antenna | 130 m | 14 * 24 mm | 45 mA / 6.5 uA | UART (921600 bps) |
| EWM550-3G9T10SC | CH2 (3.99 GHz) | Ceramic Patch Antenna | 180 m | 14 * 19 mm | 45 mA / 6.5 uA | UART (921600 bps) |
| EWM550-3G9T10SX | CH2 (3.99 GHz) | IPEX-1 Generation | 230 m | 14 * 19 mm | 45 mA / 6.5 uA | UART (921600 bps) |
| EWM550-3G9T10SX + TX3700-FPC-2510 | CH2 (3.99 GHz) | Module + FPC Antenna Bundle | 230 m | 14 * 19 mm | 45 mA / 6.5 uA | UART (921600 bps) |
| EWM550-7G9T10SP | CH5/CH9 (6.48/7.98 GHz) | PCB Onboard Antenna | 130 m | 14 * 24 mm | 45 mA / 6.5 uA | UART (921600 bps) |
| EWM550-7G9T10SC | CH5/CH9 (6.48/7.98 GHz) | Ceramic Patch Antenna | 180 m | 14 * 19 mm | 45 mA / 6.5 uA | UART (921600 bps) |
| EWM550-7G9T10SX | CH5/CH9 (6.48/7.98 GHz) | IPEX-1 Generation | 230 m | 14 * 19 mm | 45 mA / 6.5 uA | UART (921600 bps) |
| EWM550-7G9T10SX + TX3700-FPC-2510 | CH5/CH9 (6.48/7.98 GHz) | Module + FPC Antenna Bundle | 230 m | 14 * 19 mm | 45 mA / 6.5 uA | UART (921600 bps) |
Industrial Installation & Wiring
The EWM550 series modules are designed in a standard 26-pin surface-mount SMD package with castellated stamp holes. Connect clean DC 1.8V ~ 3.6V (3.3V typical) to the VCC and GND pins. For serial communications, wire the TXD and RXD pins to the host microcontroller or USB-to-UART converter with default baud rate of 921600 bps (8 data bits, no parity, 1 stop bit). Use the WKP pin (pull low) to quickly wake the module from ultra-low-power sleep mode, and RSTN (pull low) for hardware reset. When routing PCBs for the PCB antenna (T10SP) or Ceramic antenna (T10SC) models, ensure a complete ground clearance keepout zone beneath the antenna section.
Practical Application Scenarios
1. Automated Guided Vehicles (AGV) & AMR Autonomous Follow-Me Navigation
In automated smart factories and logistics hubs, warehouse transport robots and AGVs require reliable proximity tracking relative to operators or leader carts. Integrating EWM550 modules enables real-time 1-to-many bidirectional distance measurement over UART at 921600bps, providing continuous, low-latency distance telemetry for collision avoidance and automatic leader following.
2. Industrial Personnel Geofencing & Hazardous Area Safety Tracking
In high-risk industrial facilities such as underground mines, chemical storage plants, and power substations, monitoring personnel in real time prevents fatal accidents. Wearable worker tags built with EWM550 modules interact with fixed base anchors, offering 30cm ranging accuracy and ultra-low 6.5uA sleep current to ensure multi-month battery life.
3. High-Value Warehouse Asset Locating & Smart Forklift Fleet Management
Tracking the real-time position of high-value equipment, toolboxes, and pallet racks inside metal-heavy warehouses where GPS signals cannot penetrate. Deploying EWM550 modules across storage racks and moving forklifts provides seamless spatial ranging data for automated yard and inventory management.
4. Service Robotics, Smart Hospital Carts & Autonomous Luggage Follower
Commercial service robots and autonomous hospital medical supply carts rely on continuous, jitter-free distance feedback to follow human staff down corridors. The EWM550 module outputs formatted distance frames directly over UART, enabling seamless integration into ROS and embedded microcontrollers without complex driver development.
FAQ Section
1. How does the EWM550 series differ from Decawave DW1000-based modules?
The EWM550 series is based on the highly integrated MK8000 SoC, combining the UWB RF transceiver and controller into a single chip. It offers lower power consumption (45mA TX / 6.5uA Sleep), higher serial baud rates (up to 921600 bps), and turnkey transparent data transmission and AT commands out of the box.
2. What is the difference between the 3G9 and 7G9 series?
The 3G9 series operates in Channel 2 (center frequency 3993.6MHz), which offers better obstacle penetration and lower path loss. The 7G9 series operates in Channel 5 and Channel 9 (center frequencies 6489.6MHz and 7987.2MHz), which comply with international high-band UWB spectrum regulations in regions where Channel 2 is restricted.
3. How does the module execute 1-to-many distance measurement?
In 1-to-many TWR mode, a single master base station polls multiple slave tag nodes in time-division sequence. Each tag responds with its timestamp frame, and the master calculates individual distance values and streams them out via UART.
4. How can I adjust module configuration parameters?
Users can connect the module to a PC serial port using a USB-to-UART converter and utilize standard AT commands or Ebyte's graphical UWB_Setting host software to configure channel numbers, node roles (Base/Tag), transmit power, and sleep intervals.
