The Ebyte E104-BT54S is an ultra-compact low-power micro Bluetooth RF module built around the BLUENRG355MC SoC, operating in the 2.40-2.48GHz ISM band with BLE 5.1 protocol and a 300m communication range.
| Technical Parameter | E104-BT54S Specification | Remarks / Test Conditions |
|---|---|---|
| Core SoC Chip | BLUENRG355MC (ARM Cortex-M0+) | High-performance low-power wireless processor |
| Operating Frequency Band | 2.40 to 2.48 GHz | Global 2.4GHz ISM license-free band |
| Bluetooth Protocol & Range | BLE 5.1 (Up to 300 meters) | Open line of sight test conditions |
| Electrical Interface & Voltage | TTL Level Output, 3.3V IO Voltage | Direct micro-controller level compatibility |
| Physical Dimensions | 28 x 16 x 2.7 mm | Ultra-small form factor for space-constrained designs |
| Product Weight | 1.8 g +/- 0.1 g | Ultra-lightweight for portable electronics |
Practical Application Scenarios
1. Wearable Medical Health Monitoring Devices
Portable medical instruments such as wireless ECG patches and blood glucose monitors demand extremely strict limitations on component weight and physical footprint. The E104-BT54S module features a micro 28x16x2.7mm size and weighs only 1.8g, enabling health-tech design engineers to embed reliable BLE 5.1 wireless connectivity directly into skin-worn devices without burdening the patient or expanding the enclosure size.
2. Smart Home Asset Tracking and Beacon Nodes
Indoor asset management systems require low-power wireless transceivers that can communicate efficiently across domestic room layouts without draining coin-cell batteries prematurely. Operating in the 2.4GHz ISM band, this SoC module utilizes advanced power-saving sleep modes managed by the BLUENRG355MC architecture to broadcast positioning beacons or telemetry data to nearby gateway hubs over a 300m range.
3. Industrial Handheld Diagnostic and Configuration Terminals
Field technicians utilize compact handheld meters and service tools to query industrial machinery parameters on-site. The module's TTL level output and 3.3V IO compatibility allow seamless integration with core microcontrollers inside compact enclosures, replacing cumbersome physical service cords with a responsive short-range wireless configuration link.
FAQ Section
1. How does the BLE 5.1 protocol improve performance compared to older Bluetooth standards?
BLE 5.1 brings advanced direction-finding capabilities, enhanced connection stability, and higher data throughput efficiency. This ensures faster pairing times and lower packet drop rates when communicating with modern smartphones or industrial gateway hubs.
2. What considerations are necessary for mounting such an ultra-small module onto a custom PCB?
Because the module measures just 28x16mm with an ultra-low profile of 2.7mm, layout engineers must ensure adequate ground plane clearance around the onboard antenna area to prevent signal attenuation and maintain the full 300m transmission range.
3. Can the module be powered directly from a standard 3.3V microcontroller rail?
Yes, the module is engineered with a standard 3.3V IO port voltage and TTL level output, allowing direct pin-to-pin integration with most low-power ARM Cortex and RISC-V host microcontrollers without requiring external voltage level shifters.
