Introduction
BL-M7921AU1 is a highly integrated triple-band WLAN + Bluetooth-compatible v5.4 combo module. It integrates a 2T2R triple-band WLAN subsystem and a dual-mode short-range wireless subsystem compliant with Bluetooth v5.4 core specification.
This module complies with the IEEE 802.11a/b/g/n/ac/ax (Wi-Fi) standard and delivers a maximum PHY rate of up to 1200 Mbps. It supports Classic BR/EDR and Low Energy (BLE) operation modes, and is backward compatible with Bluetooth v4.2 and v2.1+EDR specifications. This design provides high-standard feature-rich wireless connectivity, along with reliable, cost-effective and high-throughput performance over an extended transmission distance.
Features
Support 2.4GHz, 5GHz, 6GHz Triple-band channels
Support Triple-band 2T2R mode with 20/40/80Mhz bandwidth
Support MU-MIMO RX, MU-OFDMA TX/RX
Support TX/RX Beamformer
Support DBDC (2.4G 1T1R + 5G / 6GHz 1T1R)
Block Diagram
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General Specifications
Module Name | BL-M7921AU1 |
Chipset | MT7921AUN |
WLAN Standard | IEEE 802.11 a/b/g/n/ac/ax |
BT Specification | Bluetooth Core Specification v5.4/4.2/2.1 |
Host Interface | USB3.0/USB2.0 for WLAN & Bluetooth (Reserved UART interface for BT) |
Antenna | IPEX / MHF-1 connector for external WLAN antennas; Half hole PAD for external BT antennas (Reserved IPEX connector for BT0) |
Dimension | 27.0*17.8*2.5mm (L*W*H) |
Power Supply | DC 3.3V±0.2V @ 1800 mA (Max Peak) |
Operation Temperature | -20℃ to +70℃ |
Operation Humidity | 10% to 95% RH (Non-Condensing) |
Product Dimension
![屏幕截图 2025-12-30 114333]()
Module dimension: 27.0*17.8*2.5mm(L*W*H; Tolerance: ±0.3mm_L/W, ±0.2mm_H)
IPEX / MHF-1 connector dimension: 2.6*3.0*1.2mm (L*W*H, Ø2.0mm)
Package Dimensions
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Package specification:
1. 900 modules per roll and 3,600 modules per box.
2. Outer box size: 39.5*38*35cm.
3. The diameter of the blue environment-friendly rubber plate is 13 inches,
with a total thickness of 48mm (with a width of 44mm carrying belt).
4. Put 1 package of dry agent (20g) and 1 PC humidity card in each anti-static vacuum bag.
5. Each carton is packed with 4 boxes.
