WM1 Reset & Teardown (FCC ID 2ACDZ-WM1)
Factory reset and internal photos for Broadlink WM1. Broadlink smart plug.
January 15, 2026
•
1 min read
Before you buy the Broadlink WM1, check what's inside.
The Broadlink WM1 is a compact WiFi module designed for integration into other devices. It enables them to connect to a 2.4GHz WiFi network and offers various communication interfaces like UART, I2C, and GPIO.
⚠️ NOTE: Ensure correct voltage (3.1-3.6V) is supplied to the VDD pin and observe polarity.
Quick Specs
- Manufacturer: Broadlink
- Model: WM1
- Protocol: WiFi
- Chipset: Broadlink WiFi
- Ecosystem: Broadlink
- App: Broadlink App
🔧 Geek Corner (Flashing Info)
- Chipset: Broadcom WFM200
- Flashable: ❌ No
- Info: Proprietary Broadlink chipset, not designed for flashing custom firmware like Tasmota or ESPHome.
User Manual
Scanned pages from the official user manual:
External Photos
Photos of the device exterior:
Internal Photos
Teardown photos showing the PCB and components:
Verdict
The WM1 is a WiFi device from the Broadlink ecosystem.
📄 Click to view full text manual (SEO)
USERMANUAL_V1
The device is a fully self‐contained small form‐factor, single stream, 802.11 b/g/n wifi
module, which provides a wireless interface to any equipment with a Serial/GPIO/I2C/ADC
interfacefor datatransfer .ItsupportsAPandSTAwirelessnetworkingandsupportWIFIDirect
mode.ItintegratesMAC,basebandprocessor,RFtransceiverwithpoweramplifierinhardware
andallwifiprotocolandconfigurationfunctionalityandnetworkingstack,inembeddedfirmware
tomakeafullyself‐contained802.11b/g/nwifisolutionforavarietyofapplications.
DeviceFeatures
[email protected]/WPA2
Fullyself‐containedserial‐to‐wirelessfunctionality
SupportIEEE802.11b/g/nwirelessstandards
SupportUART/PWM/ADC/I2C/GPIOdatacommunicationinterface
SupportworkasSTA/AP/AP+STA/WIFIdirectmode
Supportsmartconfiguration
SupportTLS/SSLandmDNSProtocal
SupportPCB/Externalantennaoption
Smallsize:40.9mm*22.6mm*2.7mm
Deviceparemeters
Class Item Parameters
Wireless Wirelessstandard 802.11b/g/n
Frequency range 2.412GHz~2.484GHz
TransmitPower 802.11b:17dBm
802.11g:15dBm
802.11n:15dBm
ReceiverSensitivity 802.11b<‐78dBm
802.11g<‐68dBm
802.11n<66dBm
PCBantennagain 1.5dB
Hardware Operatingvoltage 3.1~3.6V
Operatingcurrent Max(tx):~210mA
OPERATINGtemp 0~70℃
size 40.9mm*22.6mm*2.7mm
VIL ≤0.3VCC
VIH ≥0.7VCC
ESD(HumanBodyModel) 2kv@25℃
ESD(ChargedDeviceModel) 500v@25℃
software Networktype STA/AP/STA+AP/WIFIDirect
Securitymechanisms WEP/WPA/WAP2
Encryption WEP64/WEP128/TKIP/AES
Reservedresource
Networkprotocol IPv4,TCP/UDP/FTP/HTTP ,HTTPS,TLS,mDNS
Hardware
(Unit:mm)
Pinassignment
GND GND
VDD 3.3V
RX2 GPIO79; GPT1_CH1; UART2_RX
TX2 GPIO78; GPT1_CH0; UART2_TX
P1 GPIO6; ADC0_IN1; GPT3_CH0
P2 GPIO7; ADC0_IN0;GPT3_CH1
P3 GPIO8; ADC1_IN0; GPT1_CH2;I2C1_SDA
P4 GPIO9;ADC1_IN1;GPT1_CH3; I2C1_SCL
P5 GPIO17;GPT0_CH5
GND GND
TDO JTAG TDO
TCK JTAG TCK
TMS JTAG TMS
TDI JTAG TDI
TRST_N JTAG TRST_N
VDD 3.3V
GND GND
P6 GPIO27;BOOT
P7 GPIO28;GPT3_CH3
P8 GPIO29;GPT3_CH4
P9 GPIO30;GPT3_CH5
P10 GPIO44;I2C0_SDA
P11 GPIO45;I2C0_SCL
RX0 UART0_RX;GPIO75
TX0 UART0_TX;GPIO74
GND GND
P12 GPIO63;SPI_CLK
P13 GPIO64;SPI_CS
P14 GPIO65;SPI_RX
P15 GPIO66;SPI_TX
GPIO
EachGPIOcanbeconfiguredbysoftwareasaninputoroutput
ProgrammablecontrolforGPIOinterrupt,
4mAcurrentsink/sourcecapabilityfor3.3vI/Osupply
RTC(Realtimeclock)
TheRTCisanindependent32‐bithardwaretimer,providingacontinuouslyrunningcounter
thatcanbesuppliedtoacustomerclock‐calendarandtimerinterrupt.
GPT(Generalpurposetimer)
A32‐bitcounterwithprogrammableclockdividerandpre‐scalar
Inputcaptureforexternalinputs
Edge‐alignedandCenter‐alignedPWM
ADC
TheADCmodulehasaprogrammableresolutionfrom10to16bits.
Flexiblegainbuffersettingof2x,1x,0.5x
Highestthroughputratewith10‐bitresolutionis250ksample/s
UART
UART0fordebug;UART2usedtocommunicatewithotherdevice.
I2C
Threespeeds:standardmode(100kb/s),fastmode(400kb/s),high‐speedmode(3.4Mb/s)
Clocksynchronization
MasterorslaveI2Coperation,multi‐master,multi‐slaveoperation,andarbitrationsupport
JTAG
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