[IC] : SI4432
[Frequency] : 425~525MHz
[Power] : 20dBm
[Distance] : 1.6km
[Interface] : SPI
[Introduction] : E27-4333M20S is a 100mW wireless transceiver module, operates at 433MHz,with small-size(1.27 Pin pitch).E27-4333M20S is based on the original imported RF chip Si4432 from Silicon Labs. With diversified built-in antenna and excellent anti-interface performance, the chip supports frequency hopping.
| RF Parameter | Value | Remark |
| Working frequency | 425~525 MHz | Default: 433MHz (30MHz oscillator) |
| Transmitting power | 20 dBm | Max. Power (100mW) |
| Receiving sensitivity | -121 dBm | Air data rate: 1.2kbps |
| Air data rate | 0.123k~256kbps | Default: 1.2kbps |
| Test distance | 1.6km | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 1.2kbps |
| Hardware Parameter | Value | Remark |
Size | 16 * 16 mm | |
Antenna type | Stamp hole | |
Communication interface | SPI | |
Package | SMD | |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 1.8 | 3.3 | 3.6 | V | |
| Communication level | 1.8 | 3.3 | 3.6 | V | |
| Transmitting current | 78 | 83 | 91 | mA | 20dBm（100mW） |
| Receiving current | 14.7 | 18.5 | 20.0 | mA | |
| Sleep current | 0.4 | 0.5 | 0.6 | μA | |
| Operating temperature | -40 | 20 | +85 | ℃ | |
| Operating humidity | 10 | 60 | 90 | % | |
| Storage temperature | -40 | 20 | +125 | ℃ |
| Pin No | Pin item | Pin direction | Pin application |
| 1 | GND | - | Ground |
| 2 | GPIO0 | Input/Output | Configurable GPIO |
| 3 | GPIO1 | Input/Output | Configurable GPIO |
| 4 | GPIO2 | Input/Output | Configurable GPIO |
| 5 | VCC | Input/Output | Power supply 1.8V~3.6V. |
| 6 | SDO | Output | SPI master input slave output |
| 7 | SDI | Input | SPI master input slave output |
| 8 | SLCK | Input | SPI master input slave output |
| 9 | NSEL | Output | SPI chip select for starting SPI communication |
| 10 | IRQ | Output | SPI chip select for starting SPI communication |
| 11 | SDN | - | Shut down input Pin It is low level when working. (See SI4432 manual for moredetails) |
| 12 | GND | - | Ground |
| 13 | ANT | - | Antenna |
| 14 | GND | - | Ground |
| Order online |
| 【eBay】：https://www.ebay.com/usr/cdebyte |
| 【Aliexpress】：https://www.aliexpress.com/store/2798183 |
| 【Alibaba】：https://www.alibaba.com |
| For batch order/customized product |
| 【Sales hotline】：+86-28-61399028 Ext.812 |
| 【E-mail】：service@cdebyte.com |
| Technical support |
| 【Submit online】：http://www.ebyte.com/en/apple-technology.aspx |
| 【E-mail】：support@cdebyte.com |
| Model | IC | Interface | Frequency Hz | Power dBm | Distance km | Air Rate(bps) | Package | Size (mm) | Feature | Manual | Sample |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E27-433M20S | SPI | SI4432 | 433M | 20 | 1.5 | 0.123k~256k | SMD | 16 * 16 | Small size strong anti-interferance |
