Small in size and low in power consumption, E104-BT5032A is a serial-to-BLE module based on BLE 5.0 working at 2.4Ghz. It works as both Bluetooth master and slave.Based on nRF52832 from Nordic, the E104-BT5032Amodule is developed by Chengdu Ebyte.
[IC]：nRF52832
[Frequency]：2.402~2.480GHz
[Protocol]：BLE5.0
[Distance]：60m
[Size]：11.6*16mm
[Weight]：0.8±0.1g
| RF Parameter | Value | Remark |
|---|---|---|
| Frequency [MHz] | 2402~2480 MHz | ISM band |
| Transmitting power | 4 dBm | - |
| Receiving sensitivity [dBm] | -96 dBm | Bluetooth®lowenergymode |
| Distance | 60m | Test condition:clear and open area, antenna gain: 5dBi，@4dBm,antenna height: 2m |
| Hardware Parameter | Value | Remark |
|---|---|---|
| Size | 11.6 * 16 mm | - |
| Antenna | Ceramic antenna | 50Ω Impedance |
| Communication interface | UART | - |
| Package | SMD | - |
| Electronic parameter | Min | Typ | Max | Unit | Remarks |
|---|---|---|---|---|---|
| Voltage supply [V] | 1.7 | 3.3 | 3.6 | V | ≥3.3 V ensures output power |
| Communication level [V] | - | 3.3 | - | V | For 5V TTL, it may be at risk of burning down |
| Sleep advertising current(default) | - | 173 | - | uA | default advertising gap is 1s |
| Wake-up advertising current(default) | - | 8.70 | - | mA | default advertising gap is 1s |
| Wake-up no advertising current(default) | - | 8.68 | - | mA | default connection gap is 500ms |
| wake-up connection current(default) | - | 8.78 | - | mA | - |
| Operating temperature [℃] | -40 | - | +85 | ℃ | - |
Practical Application Scenarios
1. Industrial Handheld Terminals and Mobile Barcode Scanners
In fast-paced logistics warehouses and manufacturing assembly lines, barcode scanners and data collection guns require wireless flexibility within space-constrained enclosures. The ultra-small 11.6x16mm form factor of this module allows it to fit easily onto tiny handheld PCB layouts. By utilizing the serial-to-BLE transparent transmission channel, the host microcontroller sends scanned inventory data through standard UART straight to the module, which flashes it seamlessly over a 60-meter radius to local server stations or tablet endpoints.
2. Smart Medical Monitoring and Wearable Telemetry Nodes
Clinical environments and patient tracking infrastructures rely heavily on steady data updates paired with highly restrictive energy conservation. Operating as a low-power BLE slave, the nRF52832-driven module can sleep deeply between packet bursts and wake instantly to broadcast vital physiological telemetry from battery-powered medical sensors. The integrated high-gain ceramic antenna ensures zero signal dropouts over localized clinic wards, while maintaining an incredibly light 0.8-gram weight footprint.
3. Multi-Node Sensor Aggregation in Automated Smart Workshops
For modern industrial facilities transitioning into IoT data logging, environmental parameters like temperature and vibration must be gathered across production machinery. Engineers can deploy the module configured in master mode within a localized industrial edge hub. The module actively scans, connects to, and aggregates data from multiple surrounding BLE slave sensor nodes simultaneously, outputting the consolidated sensor metrics via a clean serial bus to an adjacent programmable logic controller (PLC).
FAQ Section
1. How does the master-slave dual-mode architecture benefit field-level deployment flexibility?
The module eliminates the need to source separate SKUs for central and peripheral nodes. Engineers can dynamically configure the hardware to act either as a master device to scan and collect data from automated field equipment, or as a slave device that remains discoverable by industrial tablets and edge gateways, significantly lowering manufacturing inventory overhead.
2. Does the integrated high-gain ceramic antenna offer adequate stability inside metallic industrial enclosures?
While metal enclosures naturally attenuate 2.4GHz RF signals, the onboard ceramic antenna is specifically pre-tuned to resist near-field detuning better than traditional PCB trace variants. For optimal performance within a 60-meter range, engineers should place the module adjacent to an RF-transparent window or non-metallic cutout slot in the chassis to prevent signal trapping.
3. What design considerations are necessary when interfacing this module with a 5V logic host controller?
The core Nordic nRF52832 SoC operates natively within a 3.3V logic environment. If you interface the module's UART serial lines directly to a legacy 5V microcontroller, current injection can damage the internal digital input gates. It is essential to implement external bidirectional level shifters or inline resistor dividers on the RXD/TXD signal paths to guarantee long-term operational reliability.
