This document is a manual for the wireless transceiver module MD-Si4432-PHY, which describes the basic features and main applications of the module.
The MD‑Si4432‑PHY is a compact, low‑power RF transceiver module based on Silicon Labs' Si4432 chip. It supports FSK, GFSK and OOK modulation, operates in the 433‑470 MHz band, and offers up to 128 kbps data rates with typical output power of 17 dBm.
The manual includes the module’s key specifications, a detailed pin definition table, recommended reference circuits, and contact information for sales and service. It also lists typical applications such as home automation, security systems, smart metering, and short‑range data transmission. This manual is written in Chinese.
| Working frequency range | 433-470 MHz |
|---|---|
| Typical output power | 17 dBm |
| Receiver sensitivity | -115 dBm @ 9.6 kbps |
| Maximum data rate | 128 kbps |
| FSK deviation range | 1‑160 kHz |
| Receiver bandwidth | 10.6‑230.4 kHz |
| Supply voltage | 1.8‑3.6 V |
| Typical receive current | 18.3 mA |
| Typical transmit current | 60 mA |
| Sleep mode current | 10 nA |
It uses an SPI‑compatible control interface with pins such as SDI, SCLK, SDO and nSEL.
Typical applications include home automation and security, smart metering, alarm sensors, short‑range data transmission and control.
The module delivers a typical output power of 17 dBm.