User's Manual

XR-31B WIFI module
Copyright © 2019 Shenzhen JiXinInteligence Co., Ltd All Rights Reserved
Page 5 of 14
1.3 Key parameter
Table 1.1 Description of the main parameters
Module model
XR-31B
Mounting
SMD16
Size(mm)
22*15*3(±0.2)
Cert.
FCC、CE、IC、REACH、RoHS
SPI Flash
32Mbit(default)
Interface
UART/GPIO/ADC/PWM/I2C /SPI
Number of GPIO
11
UART baud.
9600/19200/38400/115200/921600 bps
Freq.
2400 ~2483.5MHz
Antenna
Onboard PCB antenna
Tx Power
802.11b: 17±2 dBm (@11Mbps)
802.11g: 15±2 dBm (@54Mbps)
802.11n: 14±2 dBm (@HT20, MCS7)
Rx Sensitivity
CCK, 1 Mbps : -96dBm
CCK, 11 Mbps: -91dBm
6 Mbps (1/2 BPSK): -91 dBm