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Sonoff ESP8285-PSF-B, Application Manual

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Sonoff ESP8285-PSF-B Application Manual Download Page 11

Input reflection 

- 

- 

-10 

dB 

PA output peak valuepower when at 
72.2Mbps 

15.5 

16.5 

17.5 

dBm 

PA output peak value power in 802.11b 
mode 

19.5 

20.5 

21.5 

dBm 

5.1 Sensitivity

 

Description 

Typical value 

Unit mA 

CCK 1Mbps 

-98 

dBm 

CCK 11Mbps 

-91 

dBm 

6Mbps(1/2BPSK) 

-93 

dBm 

54 Mbps (3/4 64-QAM) 

-75 

dBm 

HT20, MCS7 (65Mbps,72.2Mbps) 

-72 

dBm 

5.2 Adjacent frequency suppression  

 

Description 

Typical value 

Unit mA 

OFDM, 6Mbps 

37 

dB 

Summary of Contents for ESP8285-PSF-B

Page 1: ...o APP eWeLink PSF B04 has various packaging methods and the antenna supports ceramic antennas It can be widely used in smart grid smart transportation smart home handheld devices industrial control and other fields Product Features Built in 32bit MCU and can double as an application processor Support wireless 802 11 b g n standard Wi Fi 2 4 GHz support WPA WPA2 security mode 20 5dBm maximum output...

Page 2: ...erature 10 75 Relative humidity 20 RH 80 RH Wireless network type STA AP STA AP Encryption mechanism WEP WPA PSK WPA2 PSK Encryption type WEP64 WEP128 TKIP AES Firmware upgrade OTA remote upgrade 2 2 Wi Fi parameters Conditions VDD 3 3V 10 GND 0V test at room temperature 25 C Type Parameters Wireless standard IEEE 802 11b g n Frequency range 2 412GHz 2 484GHz ...

Page 3: ...dBm 11 Mbps CCK 802 11g 75 dBm 54Mbps OFDM 802 11n 72 dBm MCS7 Antenna type Ceramic patch antenna 3 Module Type and Pin Definition 3 1 Module type PSF B04 top view 3 2 Sequence of pin arrangement PSF B04 module provides 4 channel switch control interface Wi Fi status light interface UART serial port Top view of module pins ...

Page 4: ...Bottom view of module pins ...

Page 5: ...enable terminal high level valid low level closed Note An external pull up resistor of 1 10K connect a 100nF capacitor to the ground 4 GPIO16 Main switch for 4 channel pin active low APP configuration pin when the low level 5S enter the pairing mode 5 GPIO14 The switch for the fourth channel pin active low APP configuration pin when the low level 5S enter the pairing mode ...

Page 6: ... 5S enter the pairing mode Note The chip configuration pin needs to pull down 1 4 7K resistor to ground 9 GPIO2 Used to program flash UART1_TX 10 GPIO0 The switch for the first channel active low APP configuration pin when the low level 5S enter the pairing mode 11 GPIO4 The relay switch for the third channel active high power on default low level 12 GND GND 13 GPIO9 The switch for the second chan...

Page 7: ... through APP The following is the function description 1 Pairingmethod quick pairing mode compatible pairing mode Press and hold the button IO0 pull down default high level for more than 5s to enter the quick pairing mode When it is in the quick pairing mode press the button for more than 5s again to enter the compatible pairing mode APP can be configured in both modes Please refer to 4 3 for deta...

Page 8: ...ht on the device represents the its current network working status The specific status includes the following seven types The flashing of the Wi Fi status light is in a cycle of 2 seconds as shown in the figure the low level light is on and the high level light is off Detailed explanation of each status 1 Normal The device is working normally and the connection to the cloud server is normal The de...

Page 9: ...ble pairing mode The mobile terminal joins the device AP as a station to form a local area network to realize data interaction When the device is in the quick pairing mode G state see details in 4 2 Wi Fi status indicator light description press and hold the pairing button for 5S the device enters the compatible pairing mode Click add device on the eWeLink APP connect the device hot spot in the ph...

Page 10: ...mmon timing setting allowing users to set the work schedule of the device For example turn on off the device at 8 30 am every Wednesday etc It is similar to the setting of an alarm clock timing is very convenient to use especially for devices that are repeatedly running at certain moments 2 Count downtimer The count down is to facilitate the user to perform one time timing operations such as turn ...

Page 11: ...k value power in 802 11b mode 19 5 20 5 21 5 dBm 5 1 Sensitivity Description Typical value Unit mA CCK 1Mbps 98 dBm CCK 11Mbps 91 dBm 6Mbps 1 2BPSK 93 dBm 54 Mbps 3 4 64 QAM 75 dBm HT20 MCS7 65Mbps 72 2Mbps 72 dBm 5 2 Adjacent frequency suppression Description Typical value Unit mA OFDM 6Mbps 37 dB ...

Page 12: ...etic components such as motors inductance transformers etc high frequency signal devices such as crystal oscillators high frequency clock signals etc 2 The upper and lower layers of the PCB where the module is placed should not be routed as much as possible Do the copper clad processing and the PCB from the module antenna to the nearest pin of the module should be hollowed out as much as possible ...

Page 13: ...odule s power supply VCC pin capacitance and other module pin capacitances resistors as close as possible to the module pins and the tracepath should be short 7 Packaging Information Package size diagram Share this ...

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