Zigbee CC2531 2.4Ghz USB zigbee usb RF Transmitter and Receiver PCB Antenna 8051 MCU ISM Band LED Indicator
[IC]：CC2531
[Frequency]：2.394~2.507GHz
[Protocol]：Zigbee
[Distance]：200m
[Interface]：USB
[Introduction]：E18-2G4U04B uses CC2531 RF chip imported from Texas Instruments. The chip integrates 8051 microcomputer and wireless transceiver, and integrates PA + LNA, which greatly expands the communication distance and improves communication stability, and it is equipped with ADC sampling, remote PWM output control, remote GPIO control and other
| No. | Name | Direction | Function |
|---|---|---|---|
| 1 | P1.4 | Input/output | GPIO（see more from CC2531 datasheet） |
| 2 | P1.5 | Input/output | GPIO（see more from CC2531 datasheet） |
| 3 | P1.6 | Input/output | GPIO（see more from CC2531 datasheet） |
| 4 | P1.7 | Input/output | GPIO（see more from CC2531 datasheet） |
| 5 | VCC | Power supply | 2.0V—3.6V（do not power the module via USB at same time） |
| 6 | DD | Input/output | P2_1 for program download（see more from CC2531 datasheet） |
| 7 | DC | Input/output | P2_2 for program download（see more from CC2531 datasheet） |
| 8 | RESET | Input | Reset(Reset circuit available） |
| 9 | GND | Power supply | Ground |
| 10 | P0.2 | Input/output | GPIO（see more from CC2531 datasheet） |
| 11 | P0.3 | Input/output | GPIO（see more from CC2531 datasheet） |
| 12 | P0.4 | Input/output | GPIO（see more from CC2531 datasheet） |
| 13 | P0.5 | Input/output | GPIO（see more from CC2531 datasheet） |
| 14 | P0.6 | Input/output | GPIO（see more from CC2531 datasheet） |
| 15 | P0.7 | Input/output | GPIO（see more from CC2531 datasheet） |
| 16 | LED | Signal indicator | Connect to P1.1 of CC2531，drive of high level lights |
| 17 | LED | Signal indicator | Connect to P0.0 of CC2531，drive of low level lights |
| 18 | Button | Function | Connect to P1.3 of CC2531，effective at low level |
| 19 | Button | Function | Connect to P1.2 of CC2531，effective at low level |