User Manual for xiaomi models including: MHCWB8S-B, 2AFZZ-MHCWB8S-B, 2AFZZMHCWB8SB, MHCWB8S-B MHCWB8S-IB Wi-Fi BLE Module, MHCWB8S-B MHCWB8S-IB, Wi-Fi BLE Module, BLE Module, Module

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User manual

Xiaomi Communications Co., Ltd. MHCWB8S-B 2AFZZ-MHCWB8S-B 2AFZZMHCWB8SB mhcwb8s b

Xiaomi Communications Co., Ltd. MHCWB8S-IB 2.4GHz WIFI Bluetooth dual-mode module 2AFZZ-MHCWB8S-IB 2AFZZMHCWB8SIB mhcwb8s ib

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The user manual of WIFIBLE module

1. The product description The user can achieve wireless connection to WIFI net and BLE, through this module
2. Basic parameters

Feature Description Model Product Name Major Chipset WLAN Standard BT Standard WLAN Frequency Range BT Frequency Range Spread Spectrum
Modulation Method
Data Transfer Rate
Antenna Reference
Interface Supply Voltage Dimension
Operating Temperature Storage Temperature

Feature Description
MHCWB8S-B&MHCWB8S-IB 2.4GHz WIFI+Bluetooth Dual-Mode Module
BL616C
IEEE 802.11b/g/n/ax
V5.0 BLE
2.4GHz~2.4835GHz
2402MHz~2480MHz
IEEE 802.11b: DSSS (Direct Sequence Spread Spectrum) IEEE802.11g/n: OFDM (Orthogonal Frequency Division Multiplexing)
IEEE802.11axOFDMA(orthogonal frequency-division multiple access) DBPSK/DQPSK/CCK(DSSS) BPSK/QPSK/16QAM/64QAM/256QAM(OFDM) 11b:1,2,5.5, 11Mbps 11g: 6,9,12,18,24,36,48,54Mbps 11n:HT20MCS0~HT20MCS7 11ax:HT20MCS0~HT20MCS9 MHCWB8S-B:WIFI/BLE Internal Printed ANT; MHCWB8S-IB:WIFI/BLE external ANT UART
3.3V±0.3V
MHCWB8S-B:12mm*16.2mm*2.5mm MHCWB8S-IB: 12mm*13.5mm*2.5mm -40°C to 85°C
-40°C to 85°C

3. RF Output Power

WLAN BLE

Band 2400-2483.5MHz 2402-2480MHz

Power Limited 20dBm 20dBm

4. The display method of Model approved code In the factorythe model approve code is lasered on the shielding case.
5. FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications. However there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures  Reorient or relocate the receiving antenna.  Increase the separation between the equipment and receiver.  Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.  Consult the dealer or an experienced radio/TV technician for help.

FCC ID:
6. Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment and it also complies with Part 15 of FCC RF Rules. This equipment should be installed and operated with minimum distance of 20 in (50cm)between the radiator and yourbody. This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter CAUTION: To comply with the limits of the Class B digital device pursuant to Part 15 of the FCC Rules, this device is compliant with Class B limits. All peripherals must be shielded and grounded. Operation with non-certified peripherals or nonshielded cables may results in interference to radio or reception MODIFICATION To assure continued compliance, Any changes or modifications not expressly approved by the grantee of this device could void the users authority to operate the device.
6. Radiation Exposure Statement This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 50 cm(8 in )between the radiator and your body NOTE Tosatisfy FCC exterior labeling requirements, the following text must be placed on the exterior of the end product Contains Transmitter module FCC ID: 2AFZZ-MHCWB8S-B&2AFZZ-MHCWB8S-IB To satisfy IESD exterior labeling requirements, the following text must be placed on the exterior of the end product " Contains Transmitter module IC:25903-MHCWB8SB&25903-MHCWB8SIB
IC ID
This device complies with Industry Canada's licence-exempt RSSs. Operation is subject to the following two conditions: "Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device." Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L' exploitation est autorisée aux deux conditions suivantes : 1) l'appareil ne doit pas produire de brouillage; 2) l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

IC ID
Manufacturer:xxxxx Address: xxxxx
A voltage stabilizing element or circuit is required on the power supplies to the module, and then the power supply is sent to the modu This equipment may be operated in all European countries


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