The CWMDP102A series UART transparent transmission module is a half-duplex wireless transmission module that can work in the 315/433/868/915MHz public frequency bands. It meets the requirements of wireless regulations and does not require a frequency use permit. The module uses the WI-LINK serial debugging software to set output power, serial port speed, working frequency, product ID, etc., to provide customers with convenient and quick use.
The CWMDP102 is a half‑duplex UART wireless transmission module that operates in the 315/433/868/915 MHz ISM bands and complies with ETSI regulations. It can be configured via the WI‑LINK software or the CWM‑SET hardware switch for power, baud rate, frequency, and ID settings.
The document describes the module’s technical parameters, port definitions, wiring diagram, parameter configuration procedures, communication testing, and network (point‑to‑point and point‑to‑multipoint) operation, with practical application examples such as smart home, industrial data acquisition, and vehicle monitoring. This manual is written in Chinese.
| Operating frequency | 315/433/868/915 MHz (configurable) |
|---|---|
| Modulation method | FSK |
| Output power | 0 dBm / 5 dBm / 10 dBm / 15 dBm (configurable) |
| Receive sensitivity | -110 dBm |
| Supply voltage | +4 V ~ +9 V (other voltages customizable) |
| Harmonic suppression | < -60 dBc |
| Spurious emission | < -60 dBm |
| Baud rates | 1.2k/2.4k/4.8k/9.6k/19.2k/38.4k bps (configurable) |
| Transmission current | 43 mA @15 dBm |
| Reception current | 15 mA |
| Sleep current | < 5 µA |
| Interface data format | 8N1 (other formats customizable) |
| Operating temperature | -30 °C ~ 70 °C |
| Operating humidity | 10 % ~ 90 % RH (no condensation) |
| Dimensions | 24 mm × 36 mm |
| Reference transmission distance | 200 m |
The module can transmit up to 200 meters under typical conditions.
The module operates from a supply voltage of +4 V to +9 V, with other voltages available on request.
The sleep current is less than 5 µA.