[Introduction]：E104-BT51 is a serial to BLE Bluetooth slave module based on Bluetooth protocol version 5.0, which is small-sized, low power consumption, and works in the 2.4GHz frequency band. E104-BT51 module is a serial to BLE Bluetooth module developed by Chengdu Ebyte Electronic Technology Co., Ltd. based on TI CC2640R2F chip.
[IC]：CC2640R2F
[Frequency]：2.402~2.480GHz
[Protocol]：BLE5.0
[Distance]：75m
[Size]：17.5*28.7mm
| RF Parameter | Value | Remark |
|---|---|---|
| Frequency [MHz] | 2402~2480 MHz | ISM band |
| Transmitting power | 5 dBm | - |
| Receiving sensitivity [dBm] | -99 dBm | Air rate is 250k bps |
| Distance | 75m（0dBm） | Clear and open environment, height 1.5m (only 75m can be tested by the host) |
| Hardware Parameter | Value | Remark |
|---|---|---|
| Size | 17.5*28.7 mm | - |
| Antenna | PCB | 50Ω Impedance |
| Communication interface | UART | - |
| Package | SMD | - |
| Electronic parameter | Min | Typ | Max | Unit | Remarks |
|---|---|---|---|---|---|
| Voltage supply [V] | 1.8 | 3.3 | 3.6 | V | ≥3.3 V ensures output power |
| Communication level [V] | - | 3.0 | - | V | For 5V TTL, it may be at risk of burning down |
| Sleep broadcasting current(default) | - | 29.93 | - | uA | Broadcast interval is 1s |
| Wake-up broadcasting current(default) | - | 1581 | - | uA | Broadcast interval is 1s |
| Wake-up no broadcasting current(default) | - | 1570 | - | uA | - |
| wake-up connection current(default) | - | 2301 | - | uA | Connection interval is 1s |
| Sleep connection current(Default) | - | 259.1 | - | uA | Connection interval is 1s |
| Operating temperature [℃] | -40 | - | +85 | ℃ | - |
