The BM2302-34-2 is a 433MHz OOK RF receiver module which has a built-in Low-IF OOK RF receiver IC of the Holtek BC2302C/D. Comparing with the BM2302-3x-1 series, the BM2302-3x-2 series offer stronger anti-interference ability and wider operating voltage range. The product needs to use with an OOK modulation RF transmitter module.
The product automatically enters Auto RX mode after powering on. In Auto RX mode, the module automatically receives RF signals transmitted from the antenna and output the data to the DOUT pin after demodulating.
BM2302-3x-2 and BM2302-6x-2 comparison
| Function | BM2302-3x-2 | BM2302-6x-2 |
|---|---|---|
| Operating voltage | 2.4V~5.5V | 2.4V~5.5V |
| Operating current | 4.0mA @433MHz | 4.0mA @433MHz |
| Operation mode | Auto RX mode | Auto RX, Sniff RX
Deep sleep, Configuration mode |
| RX sensitivity
(@5V, 25℃, 433MHz) |
-108dBm @10Ksps | -108dBm @10Ksps |
| RF input power (Max.) | +10dBm | +10dBm |
| Frequency band | 315MHz/433MHz/
868MHz/915MHz |
315MHz/433MHz/
868MHz/915MHz |
| Modulation | OOK | OOK |
| Symbol rate | Auto RX mode: 0.5Ksps~19Ksps | Auto RX mode: 0.5Ksps~19Ksps |
| Dimension | 43 x 10.5 x 5.5mm | 16 x 15 x 2.6mm |
| Pin | Pin name | Function |
|---|---|---|
| 1 | ANT | Antenna interface |
| 2 | GND | Ground |
| 3 | GND | Ground |
| 4 | VDD | Power supply: 2.4V~5.5V |
| 5 | VDD | Power supply: 2.4V~5.5V |
| 6 | DOUT | Demodulated data output |
| 7 | DOUT | Demodulated data output |
| 8 | GND | Ground |
| Function | BM2302-3x-2 | BM2302-3x-1 |
|---|---|---|
| Operating voltage | 2.4V~5.5V | 3.0V~5.5V |
| Operating current | 4.0mA @433MHz | 3.2mA @433MHz |
| Deep sleep mode current | - | 0.5μA @5V |
| RX sensitivity
(@5V, 25℃, 433MHz) |
-108dBm @10Ksps | -112dBm @10Ksps |
| RF input power (Max.) | +10dBm | +10dBm |
| Frequency band | 315MHz/433MHz/
868MHz/915MHz |
315MHz/433MHz/
868MHz/915MHz |
| Modulation | OOK | OOK |
| Symbol rate | 0.5Ksps~19Ksps | 1Ksps~20Ksps |
| Dimension | 43 x 10.5 x 5.5 mm | 43 x 10.5 x 5.5 mm |
| HS Code (reference) | 8517.79.00.00-6 |
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