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Bluetooth WIFI combination module


Dual-frequency SDIO Bluetooth WIFI Combination Module WG225

WG225 is a dual-band WiFi Bluetooth combination module. It supports 1 x 1 802.11 a/b/g/n/ac WLAN standard and BT 4.2 + HS.

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Chip RTL8821
Wireless IEEE 802.11a/b/g/n/ac
Dimension 12*12*1.8mm

WG225 is a dual-band WiFi Bluetooth combination module. It supports 1 x 1 802.11 a/b/g/n/ac WLAN standard and BT 4.2 + HS. It enables seamless integration of WLAN/BT and low power technologies.

The WG225 wireless module only needs an external 3.3V power supply. The module is based on the microcontroller RTL8821. It supports low-power SDIO 3.0 interface and UART/PCM interface.

Product Features:

 Wi-Fi
◆ 802.11 a/b/g/n/ac, up to 433.3 Mbps data rate.

◆ 1T1R WLAN for 5 GHz 802.11ac, or 2.4 GHz/5 GHz 802.11n WLAN applications.

◆ SDIO 3.0 int

 Bluetooth

◆ Compliant with Bluetooth v2.1 + EDR

◆ Support Bluetooth 4.2 features

◆ Class-1, class-2 and class-3 transmitter without external power amplifier

◆ Enhanced power control

◆ Integrated internal Class 1,Class 2,and Class 3 PAs

◆ Support BT-WLAN coexistence

◆ RoHS compliance (Lead-free)

Model WG225
Antenna Style PCB Pin
Chip RTL8821
Voltage 3.3V+/-5%
Size (L × W × H) 12.0mm*12.0mm*1.8mm
Wireless standard IEEE 802.11a/b/g/n/ac
Frequency 2.412GHz--2.484GHz & 5.180GHz --5.825GHz
Data rate IEEE 802.11b : 1,2,5.5,11Mbps
IEEE 802.11g : 6,9,12,18,24,36,48,54Mbps
IEEE 802.11n : MCS0--MCS7 @ HT20 /2.4GHz band
MCS0--MCS7 @ HT40 /2.4GHz band
MCS0--MCS9 @ HT40 /5GHz band
IEEE 802.11ac : MCS0--MCS9 @ VHT80 /5GHz band
Receiving sensitivity VHT80 MCS9 : -53dBm@10% PER(MCS9) /5GHz band
HT40 MCS9 : -60dBm@10% PER(MCS9) /5GHz band
HT40 MCS7 : -65dBm@10% PER(MCS7) /2.4GHz band
HT20 MCS7 : -66dBm@10% PER(MCS7) /2.4GHz band
54M: -71dBm@10% PER
11M: -83dBm@ 8% PER
Modulation technology DSSS (DBPSK, DQPSK, CCK)
OFDM (BPSK, QPSK, 16-QAM, 64-QAM, 125-QAM, 256-QAM)
Encryption WPA/WPA2, WEP, TKIP and AES, WPS2.0, WAPI
Transmission power IEEE 802.11ac: 11dBm @HT80 MCS9 /5GHz band
IEEE 802.11ac: 13dBm @HT80 MCS0 /5GHz band
IEEE 802.11n: 12dBm @HT20/40 MCS7 /5GHz band
IEEE 802.11n: 14dBm @HT20/40 MCS0 /5GHz band
IEEE 802.11n: 14dBm @HT20/40 MCS7 /2.4GHz band
IEEE 802.11g: 16dBm @54MHz
IEEE 802.11b: 18dBm @11MHz
Certificate RoHS
Storage Temperature: -40℃~135℃
Operating Humidity: 10%~90% non-condensing
Storage Humidity: 5%~90% non-condensing

◆ SDIO 2.4GHz/5GHz 802.11n WIFI

◆ SDIO 5GHz 802.11ac WIFI


1. who are we?
We are based in Guangdong, China, start from 2006,sell to North America(30.00%),Eastern Europe(15.00%),Western Europe(15.00%),Northern Europe(14.00%),Oceania(5.00%),South Asia(5.00%),Domestic Market(5.00%),South America(4.00%),Southeast Asia(3.00%),Africa(00.00%),Mid East(00.00%),Central America(00.00%),Southern Europe(00.00%).
2. how can we guarantee quality?
Always a pre-production sample before mass production; Always final Inspection before shipment;