Introduction
In the global IoT market, Bluetooth modules must not only deliver excellent performance, but also obtain the mandatory access certifications required by target markets. Certifications such as FCC (US), CE (EU), RoHS (environmental), and SRRC (China) are the necessary "passports" for products to enter mainstream markets including North America, Europe, and China.
The two classic Bluetooth modules E104-BT05 and E104-BT5032A from Chengdu Ebyte Electronic Technology Co., Ltd. (EBYTE), with their respective authoritative certification combinations, have become ideal choices for different application scenarios. This article provides an in-depth analysis of the certification status and core features of these two modules.
E104-BT05: Mature and Stable BLE 4.2 Slave Module
Certification Combination: FCC, SRRC (Two Certifications Complete, Accessible in China and the US)
| Certification | Description |
|---|---|
| FCC | US Federal Communications Commission certification, ensuring the product's electromagnetic radiation and interference immunity meet US standards; legally accessible to the North American market |
| SRRC | China's radio transmission equipment type approval certification; a mandatory market access requirement for radio transmission equipment in China |
In-Depth Analysis of Product Features
Core Solution and Protocol
Chip solution: Based on the TLSR8266 chip;
Bluetooth protocol: Supports the BLE 4.2 protocol, a classic low-power Bluetooth slave module.
Rich Functional Features
Low-power broadcasting and serial wake-up: Supports entering low-power mode via AT commands, and supports serial data wake-up;
I/O control: Supports I/O level reading and level setting;
PWM output: Supports PWM output with variable frequency and period (PWM0, PWM1, PWM2, PWM3);
MAC address binding: Supports binding connections, allowing only hosts with designated MAC addresses to connect, improving security;
Flexible UUID configuration: Supports custom 16-bit and 128-bit UUIDs, resolving the issue of UUID mismatch with APP communication;
Broadcast data switching: Supports normal broadcast and iBeacon broadcast.
Specifications
| Parameter | Value | Remarks |
|---|---|---|
| Operating band | 2.4GHz | ISM band |
| Bluetooth protocol | BLE 4.2 | Slave mode |
| Max transmit power | 8dBm | TXPWR default 0xCF |
| Reference distance | 70m | Open, clear environment |
| Default baud rate | 115200 | - |
| Default MTU length | 20 bytes | Configurable 20~128 bytes |
| Operating temperature | -40 to +85°C | Industrial grade |
| Package size | 10 × 14.5mm | PCB board antenna |
| Certification status | FCC, SRRC | Two certifications complete |
Typical application scenarios: Smart wearable devices, smart home (lighting, door lock control), home security (sensor data reporting), industrial data acquisition and intelligent control.
E104-BT5032A: High-Performance BLE 5.0 Master-Slave Integrated Module
| Certification | Description |
|---|---|
| CE | EU mandatory safety certification, covering safety, EMC, radio, and other requirements, ensuring legal sales in the European market |
| FCC | US Federal Communications Commission certification, legally accessible to the North American market |
| RoHS | Restriction of Hazardous Substances Directive; the product is free of lead, mercury, and other hazardous substances, meeting environmental requirements |
| SRRC | China's radio transmission equipment type approval certification, legally accessible to the Chinese market |
In-Depth Analysis of Product Features
Core Solution and Protocol
Chip solution: Based on the Nordic original nRF52832 chip, with powerful performance;
Bluetooth protocol: Supports the BLE 5.0 protocol, compatible with 2M PHY high-speed mode.
Rich Functional Features
Multiple role modes: Supports four role modes—master, slave, observer, and master-slave integrated;
Multiple data transmission modes: Supports two modes—transparent transmission and formatted transmission;
Multiple connection modes: Supports two connection methods—manual connection and automatic connection;
Multi-connection support: Supports coexistence of multiple masters and multiple slaves, with up to 4 connections (as a master, connects to up to 4 slaves; as a slave, connected by up to 4 masters);
MAC binding: Supports MAC address binding, with up to 8 devices bound (master/slave not distinguished);
GPIO and PWM: Supports up to 8 GPIO channels configured as input/output, and up to 3 PWM outputs;
Large MTU: MTU supports up to 247 bytes;
iBeacon and broadcast switching: Supports iBeacon and normal broadcast switching.
Specifications
| Parameter | Value | Remarks |
|---|---|---|
| Operating band | 2.4GHz | ISM band |
| Bluetooth protocol | BLE 5.0 | Master-slave integrated |
| Max transmit power | 4dBm | Supports dynamic modification |
| Reference distance | 70m @4dBm, 2Mbps | Open, clear environment |
| Receive sensitivity | -96dBm | Bluetooth low energy mode |
| Default baud rate | 115200 | - |
| MTU length | Up to 247 bytes | - |
| Operating voltage | 1.7–3.6V | Typical 3.3V |
| Operating temperature | -40 to +85°C | Industrial grade |
| Package size | 11.5 × 16mm | Ceramic antenna |
| Antenna form | Built-in ceramic antenna | No external antenna needed |
| Certification status | CE, FCC, RoHS, SRRC | Four certifications complete, globally accessible |
Typical application scenarios: Smart wearable devices (scenarios requiring master-slave integration), smart home gateways, industrial wireless sensor networks, health sensors and medical devices, automated data acquisition systems.
Comparison Summary of the Two Modules
| Comparison Dimension | E104-BT05 | E104-BT5032A |
|---|---|---|
| Core chip | TLSR8266 | nRF52832 (Nordic) |
| Bluetooth protocol | BLE 4.2 | BLE 5.0 |
| Role mode | Slave only | Master-slave integrated (master, slave, observer, master-slave) |
| Max transmit power | 8dBm | 4dBm |
| Max connections | 1-to-1 | Up to 4 connections (multi-master/multi-slave) |
| MAC binding | Supported (bind 1) | Supported (bind up to 8) |
| GPIO/PWM | Supports I/O acquisition, I/O output, 4 PWM | Supports 8 GPIO, 3 PWM |
| MTU | 20~128 bytes | Up to 247 bytes |
| Antenna form | PCB board antenna | Built-in ceramic antenna |
| Module size | 10 × 14.5mm | 11.5 × 16mm |
| Certifications obtained | FCC, SRRC | CE, FCC, RoHS, SRRC |
| Certification completeness | ★★★★ | ★★★★★★★ (four complete) |
| Core positioning | High cost-performance, classic BLE 4.2 slave solution | High performance, BLE 5.0 master-slave, most complete global certification |
With the authoritative certifications they have obtained, these two Bluetooth modules from Ebyte provide global customers with a comprehensive selection—from classic to high-performance:
E104-BT05: FCC and SRRC dual certification; suitable for high-cost-performance pure slave Bluetooth applications targeting the Chinese and US markets, such as smart wearables and smart home sensors;
E104-BT5032A: CE, FCC, RoHS, and SRRC four-certification complete; one of the rare "globally accessible" high-performance BLE 5.0 modules, suitable for complex industrial IoT and smart gateway applications requiring advanced functions such as master-slave integration, multi-connection, and large MTU.
These certifications are not only a guarantee of product quality, but also a solid assurance that Ebyte helps customers bring their products to global markets quickly and compliantly. Choose Ebyte's fully certified modules to let your Bluetooth projects cross borders and pass through without barriers.
