The Ebyte E103-W07 is a high-performance 2.4GHz Wi-Fi serial wireless module featuring ESP-MESH self-organizing ad-hoc networking protocol, supporting IEEE 802.11b/g/n, 20dBm transmit power, PCB and IPEX antenna options, and transparent UART AT command control for large-scale indoor and outdoor industrial IoT mesh deployments.
| Technical Parameter | E103-W07 (PCB Onboard Antenna) | E103-W07 (IPEX External Antenna) |
|---|---|---|
| Operating Frequency | 2412 to 2484 MHz (2.4GHz ISM Band) | 2412 to 2484 MHz (2.4GHz ISM Band) |
| Wi-Fi Standard Protocol | IEEE 802.11b/g/n | IEEE 802.11b/g/n |
| Mesh Networking Protocol | ESP-MESH Self-Organizing Ad-Hoc Network | ESP-MESH Self-Organizing Ad-Hoc Network |
| Maximum Transmit Power | 20 dBm (Approx. 100mW) | 20 dBm (Approx. 100mW) |
| Antenna Interface | Onboard PCB Trace Antenna | IPEX Generation 1 Connector |
| Communication Interface | UART Serial Port (TTL Level) | UART Serial Port (TTL Level) |
| Control Commands | Standard AT Instruction Set | Standard AT Instruction Set |
| Dimensions / Weight | 18 x 31 mm / 2.21g plus or minus 0.1g | 18 x 31 mm / 2.21g plus or minus 0.1g |
| Package / Form Factor | SMD Package | SMD Package |
| Application Scope | Indoor / Outdoor Mesh IoT Nodes | Indoor / Outdoor Mesh IoT Nodes |
| Technical Parameter | E103-W07 (PCB Onboard Antenna) | E103-W07 (IPEX External Antenna) |
|---|---|---|
| Operating Frequency | 2412 to 2484 MHz (2.4GHz ISM Band) | 2412 to 2484 MHz (2.4GHz ISM Band) |
| Wi-Fi Standard Protocol | IEEE 802.11b/g/n | IEEE 802.11b/g/n |
| Mesh Networking Protocol | ESP-MESH Self-Organizing Ad-Hoc Network | ESP-MESH Self-Organizing Ad-Hoc Network |
| Maximum Transmit Power | 20 dBm (Approx. 100mW) | 20 dBm (Approx. 100mW) |
| Antenna Interface | Onboard PCB Trace Antenna | IPEX Generation 1 Connector |
| Communication Interface | UART Serial Port (TTL Level) | UART Serial Port (TTL Level) |
| Control Commands | Standard AT Instruction Set | Standard AT Instruction Set |
| Dimensions / Weight | 18 x 31 mm / 2.21g plus or minus 0.1g | 18 x 31 mm / 2.21g plus or minus 0.1g |
| Package / Form Factor | SMD Package | SMD Package |
| Application Scope | Indoor / Outdoor Mesh IoT Nodes | Indoor / Outdoor Mesh IoT Nodes |
| Main parameter | Performance |
| Working channel center frequency range |
2412~2484MHz |
| Wi-Fi |
Protocol IEEE802.11b/g/n |
| Antenna type |
PCB,IPEX Antenna |
| Transmit Power | 20dBm |
| Distance (With router @Mercury MW305R) |
200m |
| Distance (Between modules) |
100m |
|
Recommended working temperature（℃） |
–40~85 |
| Power pin voltage（V） |
3.0~3.6 |
| humidity(%RH) |
85 |
| Peak current(mA) |
400 |
| Average current(mA) |
100 |
Practical Application Scenarios
1. Large-Scale Commercial Smart Lighting and Building Mesh Topologies
In expansive indoor environments like shopping malls, warehouses, and multi-story office complexes, standard Wi-Fi access points struggle with coverage blind spots. The E103-W07 utilizes ESP-MESH protocol to establish a self-healing, multi-hop ad-hoc wireless network across hundreds of node devices. Integrated into LED driver boards, each module acts as both a serial node and a router. If a single lighting node loses power, surrounding modules automatically route control packets through adjacent nodes back to the central gateway, ensuring reliable indoor automation.
2. Outdoor Agricultural Greenhouses and Distributed Environmental Telemetry
In smart agriculture monitoring where physical wiring is impractical across acres of greenhouses, engineers deploy E103-W07 modules alongside Ebyte Sub-GHz LoRa gateways and sensor nodes. The E103-W07 with IPEX external antenna connections forms a robust mesh backhaul network between local greenhouse cluster controllers. Soil moisture, ambient temperature, and automatic irrigation control packets are relayed multi-hop from individual node controllers across the field to an edge gateway without requiring Wi-Fi router coverage for every node.
3. Industrial Warehouse Equipment Status Reporting and Asset Tracking
Inside automated distribution centers filled with metal racks and obstruction obstacles, traditional point-to-point Wi-Fi signals suffer severe attenuation. By embedding the E103-W07 into fixed storage rack controllers and conveyor belt telemetry units, the system creates an ad-hoc Wi-Fi mesh network. Utilizing 20dBm transmit power and AT command control over UART, real-time diagnostic telemetry and status alerts bypass physical signal obstacles through neighboring mesh nodes before uploading to local SCADA servers.
FAQ Section
1. How does ESP-MESH on the E103-W07 differ from traditional Wi-Fi infrastructure mode in large IoT deployments?
In traditional Wi-Fi infrastructure mode, every node device must connect directly to a central Wi-Fi access point or router, creating range limitations and network congestion. The E103-W07 uses ESP-MESH ad-hoc protocol, allowing node modules to dynamically connect with neighboring nodes. Data packets hop from node to node across large indoor or outdoor areas, requiring only a single root node connected to the Wi-Fi router to relay traffic from the entire mesh network.
2. What antenna options are provided on the E103-W07 and when should each be selected?
The E103-W07 comes with dual antenna interfaces on the same compact 18x31mm SMD footprint: an onboard PCB trace antenna and an IPEX generation 1 connector socket. The PCB trace antenna is cost-effective and suitable for compact plastic enclosures in short-to-medium range indoor applications. The IPEX connector is recommended when installing the module inside metal enclosures or when high-gain external rubber duck or feeder antennas are needed to overcome RF attenuation in outdoor environments.
3. How do engineers configure networking parameters and transmit serial data through the E103-W07?
The module features a standard UART serial interface operating with 3.3V TTL logic levels. Embedded developers can easily configure Wi-Fi Mesh parameters, node roles, transmit power (up to 20dBm), and networking topology using simple AT instruction commands. Once connected, serial data received from host microcontrollers is transparently packetized and transmitted across the ad-hoc mesh network.
4. What mechanical and RF precautions should be considered during PCB layout assembly?
The E103-W07 uses an SMD package with dimensions of 18x31mm and a light weight of 2.21g. When utilizing the onboard PCB trace antenna option, engineers must ensure no ground planes, copper traces, or metal components are placed directly underneath or adjacent to the antenna region on the host carrier PCB to prevent severe RF impedance mismatch and signal loss.
