User Manual Rev

FCC ID: 2ANDL-WR3E

Users Manual

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FCCID_4308742

WR3E User Manual Tuya Smart Wi-Fi Module 1. Product Overview WR3E is a low power consumption module with built-in Wi-Fi connectivity solution designed by Hangzhou Tuya Information Technology Co., Ltd..The Wi-Fi Module consists of a highly integrated wireless radio chip W302HBI40PI and some extra flashthathas been programed with Wi-Fi network protocol and plenty of software examples.WR3E include a ARM CM4F, WLAN MAC, 1T1R WLAN, maximum frequency reaches 125MHz, 256K SRAM, 1M byte flash and various peripheral resources. WR3E is a RTOS platform, embedded with all the Wi-Fi MAC and TCP/IP protocol function examples, users can customize their Wi-Fi product by using these software examples. 1.1 Features  Integrated low power consumption 32-bit CPU, also known as application processor  Basic frequency of the CPU can support 125 MHz  Supply voltage range: 3V to 3.6V  Peripherals:7 GPIO channels, 2 UART, 1 ADC  Wi-Fi connectivity:  802.11 B/G/N20/N40  Channel 1 to 11 @ 2.4GHz  Support WPA/WPA2  +23.31dBm output power in 802.11g Mode  Support SmartConfig function for both Android and IOS devices  On-board PCB antenna  Pass CE, FCC, SRRC certifications  Operating temperature range: -20℃ to 85℃ 1.2 Main ApplicationFields  Intelligent Building  Intelligent home, Intelligent household applications  Healthy devices  Industrial wireless control  Baby monitor  Webcam  Intelligent bus

WR3E User Manual 2. Dimensions and Footprint 2.1Dimensions WR3E has 2 columns of Pins (2*8).The distance between each Pin is 2 mm. Size of WR3E: 16 mm (W)×24 mm (L) ×3.3 mm (H) 2.2 Pin Definition Table 1 shows the generalpin attributes of WR3E Table 1. The typical pin definitionof WR3E PIN NAME TYPE DISCREPTION NO. 1 NC / Dangling don't pick up, in order to compatible with other modules 2 ADC AI ADC，Max5V 3 CHIP_EN I/O 4 GPIOA_29 I/O UART_Log_RXD GPIO 5 GPIOA_14 I/O GPIOA_14，hardware PWM 6 GPIOA_15 I/O GPIOA_15，hardware PWM 7 GPIOA_22 I/O GPIOA_22 8 VCC P （3.3V） 9 GND P 10 GPIOA_0 I/O GPIOA_0，HardwarePWM 11 GPIOA_30 I/O UART_Log_TXD GPIO 12 GPIOA_19 I/O GPIOA_19 13 GPIOA_5 I/O GPIOA_5，hardware PWM 14 GPIOA_12 I/O GPIOA_12，hardware PWM 15 RXD I/O UART0_RXD 16 TXD I/O UART0_TXD Note: S: Power supply pins; I/O: Digital input or output pins; AI: Analog input.

WR3E User Manual 3. Electrical Characteristics 3.1 Absolute Maximum Ratings Table 3.1. Absolute Maximum Ratings PARAMETERS DESCRIPTION MIN MAX UNIT Ts Storage temperature ‐40 105 ℃ VCC Supply voltage ‐0.3 3.6 V Static electricity voltage TAMB‐25℃ ‐ 2 KV (human model) Static electricity voltage TAMB‐25℃ ‐ 0.5 KV (machine model) 3.2 Electrical Conditions Table 3.2. Electrical Conditions PARAMETERS DESCRIPTION MIN TYPICAL MAX UNIT Ta Working temperature ‐20 ‐ 85 ℃ VCC Working voltage 3 3.3 3.6 V VIL IO low level input ‐0.3 ‐ VDD*0.25 V VIH IO high level input VDD*0.75 ‐ VDD V VOL IO low level output ‐ ‐ VDD*0.1 V VoH IO high level output VDD*0.8 ‐ V V Imax IO drive current ‐ ‐ 16 mA Cpad Input capacitor ‐ 2 ‐ pF

WR3E User Manual 3.3 Wi-Fi Receiving CurrentConsumptions Table 3.3. Wi-Fi RX currentconsumption PARAMETERS MODE TYPICAL UNIT IRF CPU sleep 90 mA IRF CPU active 120 mA 3.4 Working Mode CurrentConsumptions Table 3.4. The module working currentconsumption WORK MODE AT TA=25℃ TYPICAL MAX* UNIT EZ Mode WR3E is under EZ paring mode, Wi‐Fi indicator 115 125 mA light flashes quickly Standby Mode WR3E is connected, Wi‐Fi indicator light is on 60 209 mA Operation Mode WR3E is connected, Wi‐Fi indicator light is on 118 198 mA Disconnection WR3E is disconnected, Wi‐Fi indicator light is 34 192 mA Mode off Note: peak continuous time is about 5us. The parameter shown above will vary dependingon different firmware functions. 4. WLAN Radio Specification 4.1 Basic Radio Frequency Characteristics Table 41.Basic Radio frequency characteristics PARAMETERS DESCRIPTION Frequency band 2412-2462MHz(802.11b/g/n20);2422-2452MHz(802.11n40) Wi‐Fi standard IEEE 802.11n/g/b (Terminal 1‐11) Data transmitting rate 11b:1,2,5.5,11(Mbps) 11g:6,9,12,18,24,36,48,54(Mbps) 11n:HT20,MCS0~7 11n:HT40,MCS0~7 Antenna type On‐board PCB Antenna

WR3E User Manual 4.2.Wi-Fi TransmittingPower Table 4.2. Wi-Fi transmitting power RF output power 802.11b:21.43dBm 802.11g:23.31dBm 802.11n20:22.56dBm 802.11n40:21.55dBm 4.3Wi-Fi Receiving Sensitivity Table 4.3. Wi-Fi Receiving sensitivity PARAMETERS MIN TYPICAL MAX UNI T PER<8%, Receiving sensitivity, 802.11b CCK Mode 11M ‐ ‐91 ‐ dBm PER<10%, Receiving sensitivity, 802.11g OFDM Mode 54M ‐ ‐75 ‐ dBm PER<10%, Receiving sensitivity, 802.11n OFDM Mode MCS7 ‐ ‐72 ‐ dBm

WR3E User Manual 5. Antenna Information 5.1 Antenna Type Antenna can be connectedusing On-board PCB antenna. 5.2 Reduce Antenna Interference While using the On-board PCBantenna, in order to have the best Wi-Fi performance, it’s recommended to keep a minimum 15mm distance between the antenna part and the other metal pieces. 6. Packaging Information And Production Guide 6.1 Production Guide  The storage for the delivered module should meet the following condition: 1. The anti-moisture bag should be kept in the environment withtemperature< 30℃ and humidity< 85% RH. 2. The expiration date is 6 months since the dry packaging products was sealed.  Cautions: 1. All the operators should wear electrostatic ringin the whole process of production. 2. While operating, water and dirt should not have any contact with the modules. 6.2 Recommended furnace temperature curve Figure 6.2. PCB Package DrawingRecommended furnace temperature curve

WR3E User Manual Regulatory Module Integration Instructions 2.2 List of applicable FCC rules This device complies with part 15.247 of the FCC Rules. According to the definition of mobile and fixed device is described in Part 2.1091(b), this device is a mobile device. 2.3 Summarize the specific operational use conditions This module can be used in household electrical appliances as well as lighting equipments. The input voltage to the module should be nominally 3.0 to 3.6V VDC ,typical value 3.3VDC and the ambient temperature of the module should not exceed 85℃. This module using only one kind of antennas with maximum gain is 2.5dBi .Other antenna arrangement is not covered by this certification. The antenna is not field replaceable. If the antenna needs to be changed, the certification should be re-applied. 2.4 Limited module procedures Not applicable 2.5 Trace antenna designs Not applicable 2.6 RF exposure considerations This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment .This equipment should be installed and operated with minimum distance 20cm between the radiator& your body. If the device built into a host as a portable usage, the additional RF exposure evaluation may be required as specified by§ 2.1093. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Country Code selection feature to be disabled for products marketed to the US . 2.7 Antennas Module only contains one PCB antenna. No additional external connectors.

WR3E User Manual 2.8 Label and compliance information The outside of final products that contains this module device must display a label referring to the enclosed module. This exterior label can use wording such as: “Contains Transmitter Module FCC ID: 2ANDL-WR3E ”,or “Contains FCC ID: 2ANDL-WR3E ”, Any similar wording that expresses the same meaning may be used. 2.9 Information on test modes and additional testing requirements a) The modular transmitter has been fully tested by the module grantee on the required number of channels, modulation types, and modes, it should not be necessary for the host installer to re-test all the available transmitter modes or settings. It is recommended that the host product manufacturer, installing the modular transmitter, perform some investigative measurements to confirm that the resulting composite system does not exceed the spurious emissions limits or band edge limits (e.g., where a different antenna may be causing additional emissions). b) The testing should check for emissions that may occur due to the intermixing of emissions with the other transmitters, digital circuitry, or due to physical properties of the host product (enclosure). This investigation is especially important when integrating multiple modular transmitters where the certification is based on testing each of them in a stand-alone configuration. It is important to note that host product manufacturers should not assume that because the modular transmitter is certified that they do not have any responsibility for final product compliance. c) If the investigation indicates a compliance concern the host product manufacturer is obligated to mitigate the issue. Host products using a modular transmitter are subject to

WR3E User Manual all the applicable individual technical rules as well as to the general conditions of operation in Sections 15.5, 15.15, and 15.29 to not cause interference. The operator of the host product will be obligated to stop operating the device until the interference has been corrected Below are steps for on test modes： tx_contin_en 1 // return：wifi tx continuous test! wifitxout < parameter 1> < parameter 2> < parameter 3> < parameter 1>：Send channel option and allowed number is 1~11. < parameter 2>：Send data rate option, the relationship between input parameters and rates is shown in table 1. < parameter 3>：Send power attenuation Table 1: allowed input for speed of receiving or sending data package 11b mode 11g mode 11n mode Input Dial Speed Input Dial Speed Input Dial Speed 0x0 1M 0xb 6M 0x10 6.5M / MCS0 0x1 2M 0xf 9M 0x11 13M / MCS1 0x2 5.5M 0xa 12M 0x12 19.5M / MCS2

WR3E User Manual 0x3 11M 0xe 18M 0x13 26M / MCS3 0x9 24M 0x14 39M / MCS4 0xd 36M 0x15 52M / MCS5 0x8 48M 0x16 58.5M / MCS6 0xc 54M 0x17 65M / MCS7 cmdstop // Stop sending data package command 2.10 Additional testing, Part 15 subpart B disclaimer The final host / module combination need to be evaluated against the FCC Part 15B criteria for unintentional radiators in order to be properly authorized for operation as a Part 15 digital device. The host integrator installing this module into their product must ensure that the final composite product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operation and should refer to guidance in KDB 996369. Frequency spectrum to be investigated For host products with certified modular transmitter, the frequency range of investigation of the composite system is specified by rule in Sections 15.33(a)(1) through (a)(3), or the range applicable to the digital device, as shown in Section 15.33(b)(1), whichever is the higher frequency range of investigation.

WR3E User Manual Operating the host product When testing the host product, all the transmitters must be operating.The transmitters can be enabled by using publicly-available drivers and turned on, so the transmitters are active. In certain conditions it might be appropriate to use a technology-specific call box (test set) where accessory devices or drivers are not available. When testing for emissions from the unintentional radiator, the transmitter shall be placed in the receive mode or idle mode, if possible. If receive mode only is not possible then, the radio shall be passive (preferred) and/or active scanning. In these cases, this would need to enable activity on the communication BUS (i.e., PCIe, SDIO, USB) to ensure the unintentional radiator circuitry is enabled. Testing laboratories may need to add attenuation or filters depending on the signal strength of any active beacons (if applicable) from the enabled radio(s). See ANSI C63.4, ANSI C63.10 and ANSI C63.26 for further general testing details. The product under test is set into a link/association with a partnering WLAN device, as per the normal intended use of the product. To ease testing, the product under test is set to transmit at a high duty cycle, such as by sending a file or streaming some media content. FCC Statement Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.


Document Created: 2019-06-11 19:48:56
Document Modified: 2019-06-11 19:48:56
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