2AS9404LoRa Module

SGW2828 LoRa Module Manual Version 1.0 SGW2828 LoRa Module Datasheet Page 2 of 13 1. Introduction The SGW2828 is a pre-certified SoM enables LoRa connectivity for portable and extremely low power embedded systems. SGW2828 integrates Semtech SX1276 long range, low power transceiver, RF power amplifier and high performance MCU from STMicroelectronics. With a maximum of +30dBm Tx power and high sensitivity, the SGW2828 supports a wide range of sensors and ultra-long range spread spectrum communication between devices. This can be easily applicable to popular development platforms to facilitate the building of smart devices fast at optimized cost. 2. Features o Complete LoRa solution o Semtech SX1276 RF-front-end transceiver o STMicroelectronics MCU STM32L072KBU6 o Frequency range: 902-928MHz (US) o High sensitivity and Ultra long range: >10 km o Programmable bit rate: up to 300kbps o Standard UART/I2C/USB interface for external connectivity o Easy to use AT-command interface over UART o Operating temperature: -40°C to +85°C o Mechanical Dimension: 24.8mm x 10.8mm x 2.6mm (without antenna and connector) 2.1. Applications o Smart Agriculture o Smart Buildings & Smart Cities o Smart Healthcare o Smart Industrial Control o Smart Logistics & Supply Chain Management SGW2828 LoRa Module Datasheet Page 3 of 13 Table of Contents 1. Introduction ............................................................................................................................................. 2 2. Features .................................................................................................................................................. 2 3. Ordering Information ............................................................................................................................... 4 4. Pin Description ........................................................................................................................................ 5 5. Electrical Specifications .......................................................................................................................... 6 6. Mechanical Dimension ............................................................................................................................ 6 7. Recommended PCB Landing Pattern & Pad Locations ......................................................................... 7 8. Module Marking ...................................................................................................................................... 7 9. Soldering Temperature-Time Profile for Re-Flow Soldering ................................................................... 8 10. Certifications ......................................................................................................................................... 9 11. Revision History .................................................................................................................................. 13 12. Useful Links......................................................................................................................................... 13 SGW2828 LoRa Module Datasheet Page 4 of 13 3. Ordering Information Table 1. Ordering Part Number Part No Description SGW2828‐01A SGW2828 LoRa +30dBm Module – NA version (915 MHz) SGW2828–EVK SGW2828 LoRa +30dBm Module Evaluation Kit SGW2828 LoRa Module Datasheet Page 5 of 13 4. Pin Description Figure 2. SGW2828 Pin Out (Top View) Pin Number Pin Name Type Description 8 PB0 Digital I/O, AnalogInputGeneralpurposeI/O,ADC_IN 12 USB‐D‐ Digital I/O General purpose I/O, USB‐Data‐ 13 USB‐D+ Digital I/O General purpose I/O, USB‐Data+ 14 SWDIO Digital I/O Serial wire debug data 15 SWDCLK In Serial wire debug clock input 16 I2C_SDA Digital I/O General purpose I/O 17 I2C_SCL Digital I/O GeneralpurposeI/O 19 OSC_IN Analog Input 20 OSC_OUT Analog Output 22 RESET In 23 PA0 Digital I/O, AnalogInputGeneralpurposeI/O,ADC_IN0 24 UART_TX Digital Output UART output TX signal 25 UART_RX Digital Input UART input RX signal 37 RF_OUT RF connection 3,4 VDDH Power RFPAPowerSupply,5V 29,30 VDD Power +3.3V Power supply 1, 2, 5‐7, 9‐ 11, 18, 21, 26‐28, 31‐ 36, 38‐39 GND Power Ground signal Table 1. SGW2828 Pin Description SGW2828 LoRa Module Datasheet Page 6 of 13 5. Electrical Specifications 5.1. Absolute Maximum Ratings Symbol Parameter Min. Max. Unit VDD max Voltage on VDD supply pin ‐0.3 3.9 V VDDH max Voltage on VDDH supply pin ‐0.3 5.8 V VIO max Voltage on GPIO pin (VCC ≤ 3.6 V) ‐0.3 VCC+0.3 V V T storage Storage Temperature Range ‐40 125 °C Table 2. Absolute Maximum Ratings 5.2. Operating Conditions Symbol Parameter Min. Typ. Max. Unit VDD VCC Operating supply voltage 2.5 3.0 3.6 V VDDH VCCH Operating supply voltage 2.5 3.7 5.5 V V IH Input High Voltage 0.7 x V CC V CC V V IL Input Low Voltage V SS 0.3 x V CC V V OH Output High Voltage V CC – 0.4 V CC V V OL Output High Voltage V SS V SS + 0.4 V T Ambient Operating Temperature Range ‐40 85 °C Table 3. Operating Conditions 6. Mechanical Dimension Figure 3. SGW2828 Mechanical Information SGW2828 LoRa Module Datasheet Page 7 of 13 7. Recommended PCB Landing Pattern & Pad Locations Figure 4. SGW2828 Dimension (Top View) 8. Module Marking Figure 5. SGW2828 Module Label SGW2828 LoRa Module Datasheet Page 8 of 13 9. Soldering Temperature‐Time Profile for Re‐Flow Soldering Figure 6. Soldering Temperature‐Time Profile for Re‐Flow Soldering Remark: SGW2828 is rated as MSL 3,168-hour floor life after opening. SGW2828 LoRa Module Datasheet Page 9 of 13 10. Certifications 10.1. 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, …

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Modular Approval Request FCC (KDB 996369 D01 & Part 15.212) FCC ID: _ 2AS9404 ____ Items to be covered by Single modular transmitters. Answer from applicant 1. The modular transmitter must have its own RF shielding. Yes, shield is provided as verfieid in the submitted photo 2. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with Part 15 requirements under conditions of excessive data rates or over-modulation. Yes, the devices contains buffered modulation 3. The modular transmitter must have its own power supply regulation. Yes, the devices contains power supply regulation 4. The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204(b)(c). The antenna must either be permanently attached or employ a “unique” antenna coupler (at all connections between the module and the antenna, including the cable). Yes, the module has a non- detachable PCB antenna. 5. The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing. This is intended to demonstrate that the module is capable of complying with Part 15 emission limits regardless of the device into which it is eventually installed. Yes, the module was tested in a stand-alone configuration please refer to test setup photo. 6. The modular transmitter must be equipped with either a permanently affixed label or must be capable of electronically displaying its FCC identification number in accordance with 15.212 (a)(1)(vi)(A) / (B). Yes, the module has a permanently affixed label with its own FCC ID number .Please refer to label and label location. 7. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment authorization. For example, there are very strict operational and timing requirements that must be met before a transmitter is authorized for operation under Section 15.231. For instance, data transmission is prohibited, except for operation under Section 15.231(e), in which case there are separate field strength level and timing requirements. Compliance with these requirements must be assured. Yes,the module comply with this requirement .Please refer to user manual . 8. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 1.1310, 2.1091, 2.1093, and specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum transmitters operating under Section 15.247 are required to address RF Exposure compliance. Modular transmitters approved under other Sections of Part 15, when necessary, may also need to address certain RF Exposure concerns, typically by providing specific installation and operating instructions for users, installers and other interested parties to ensure compliance. Yes,the module comply with this requirement .Please refer to MPE report. Items to be covered by Split modular transmitters. Answer from applicant 1. The modular transmitter must comply with all requirements of a single modular transmitter except for items (1) & (5) of the above single modular approval requirements. 2. Only the radio front end must be shielded. The physical crystal and tuning capacitors may be located external to the shielded radio elements. The interface between the split sections of the modular system must be digital with a minimum signalling amplitude of 150 mV peak-to-peak. 3. Control information and other data may be exchanged between the transmitter control elements and radio front end. 4. The sections of a split modular transmitter must be tested installed in a host device(s) similar to that which is representative of the platform(s) intended for use. 5. Manufacturers must ensure that only transmitter control elements and radio front end components that have been approved together are capable of operating together. The transmitter module must not operate unless it has verified that the installed transmitter control elements and radio front end have been authorized together. Manufacturers may use means including, but not limited to, coding in hardware and electronic signatures in software to meet these requirements, and must describe the methods in their application for equipment authorization. Note: A limited modular approval (LMA) may be granted for single or split modular transmitters that comply partially with the requirements above. Name and surname of applicant (or authorized representative): __ Kenneth Wong Date: ___06 May,2020___________ Signature: _________________

Date: 06 May, 2020 To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern: The SG Wireless Limited, the undersigned, hereby authorizes Mr. Wu Xuewen from Shenzhen BALUN Technology Co., Ltd., to act on the behalf of the SG Wireless Limited solely in matters relating to the application for an FCC equipment authorization for FCC ID: 2AS9404 including the signing of documents in connection with this Application. Necessary acts carried out by Shenzhen BALUN Technology Co., Ltd. in connection with the Application shall have the same effect as acts of the SG Wireless Limited. The SG Wireless Limited also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti‐Drug Abuse Act of 1988, 21 U.S.C. Section 862. Yours Sincerely, Print name: Kenneth Wong Title: Chief Technology Officer SG Wireless Limited

Date: 06 May 2020 To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 RE: SG Wireless Limited FCC ID: 2AS9404 FCC Certification Confidentiality Request Gentlemen: This letter is to comply with 47 CFR 0.457 and 0.459 pertaining to confidentiality material. SG Wireless Limited requests that the following documents regarding this submission for FCC ID : 2AS9404 be kept Long‐Term confidential: Exhibit Type File Name Block Diagram Block Diagram.pdf Schematics Schematics.pdf Operational Description Operational Description.pdf And below exhibit kept short‐term confidential (180 days): Exhibit Type File Name External Photos External Photo.pdf Internal Photos Internal Photo.pdf Test Setup Photos Test Setup Photos.pdf Users Manuals Users Manual.pdf Those documents contain detailed system and equipment description and related information about the product which SG Wireless Limited considers to be confidential proprietary, a custom design and, otherwise, not releasable to the general public. Since this design is a basis form which future technological products will evolve, SG Wireless Limited considers this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Thank you for your attention to this matter. Yours Sincerely, Print name: Kenneth Wong Title: Chief Technology Officer SG Wireless Limited

Annex No.: BL-SZ2030163-AW 1 / 4 EUT EXTERNAL PHOTOS FRONT VIEW OF EUT REAR VIEW OF EUT Annex No.: BL-SZ2030163-AW 2 / 4 LEFT SIDE VIEW OF EUT RIGHT SIDE OF EUT Annex No.: BL-SZ2030163-AW 3 / 4 TOP VIEW OF EUT BOTTOM VIEW OF EUT Annex No.: BL-SZ2030163-AW 4 / 4 Accessory-Antenna

Label ： Label Location : On the shield of module Label location

Annex No.: BL-SZ2030163-AI 1 / 2 EUT INTERNAL PHOTOS MAIN BOARD TOP VIEW MAIN BOARD REAR VIEW RF Chip Annex No.: BL-SZ2030163-AI 2 / 2 Dipole Antenna

RF Exposure Evaluation For FCC ID: 2AS9404 Refer user manual this device is a LoRa Module, and this device was designed used in Mobile devices that the minimum distance between human’s body is 20cm. Based on the 47CFR 2.1091, this device belongs to Mobile device. The definition of the category as following: Mobile Derives: CFR Title 47 §2.1091(b) (b) For purposes of this section, a mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter’s radiating structure(s) and the body of the user or nearby persons. FCC KDB 447498 D01 General RF Exposure Guidance v06 Limit Devices operating in standalone mobile exposure conditions may contain a single transmitter or multiple transmitters that do not transmit simultaneously. A minimum test separation distance ≥ 20 cm is required between the antenna and radiating structures of the device and nearby persons to apply mobile device exposure limits. The distance must be fully supported by the operating and installation configurations of the transmitter and its antenna(s), according to the source-based time-averaged maximum power requirements of § 2.1091(d)(2). In cases where cable losses or other attenuations are applied to determine compliance, the most conservative operating configurations and exposure conditions must be evaluated. The minimum test separation distance required for a device to comply with mobile exposure conditions must be clearly identified in the installation and operating instructions, for all installation and exposure conditions, to enable users and installers to comply with RF exposure requirements. For mobile devices that have the potential to operate in portable device exposure conditions, similar to the configurations described in § 2.1091(d)(4), a KDB inquiry is required to determine the SAR test requirements for demonstrating compliance. When the categorical exclusion provision of § 2.1091(c) applies, the minimum test separation distance may be estimated, when applicable, by simple calculations according to plane-wave equivalent conditions, to ensure the transmitter and its antenna(s) can operate in manners that meet or exceed the estimated distance. The source-based time-averaged maximum radiated power, according to the maximum antenna gain, must be applied to calculate the field strength and power density required to establish the minimum test separation distance. When the estimated test separation distance becomes overly conservative and does not support compliance, MPE measurement or computational modeling may be used to determine the required minimum separation distance. According to FCC Part 1.1307, systems operating under the provisions of this section shall be operated in a manner the ensures that the public is not exposed to radio frequency energy level in excess of the commission’s guidelines. Limits for General Population/ Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength(E)(V/m) Magnetic Field Strength (H)(A/m) Power Density (S)(mW/cm 2 ) 0.3-1.34 614 1.63 (100)* 1.34-30 824/f 2.19/f (180/f2)* 30-300 27.5 0.073 0.2 300-1500 f/1500 1500-100,000 1.0 MPE calculation formula Where: S = power density P = output power (mW) G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = Separation distance between radiator and human body (cm) Test data LoRa 125KHz Mode Low Channel Middle Channel High Channel Peak Power (dBm) 27.82 27.42 27.33 250KHz Mode Low Channel Middle Channel High Channel Peak Power (dBm) 27.08 27.11 27.22 500KHz Mode Low Channel Middle Channel High Channel Peak Power (dBm) 19.10 18.88 18.72 Note: This report listed the worst case peak power value, please refer to RF test report for more details. Turn-up power Mode Range (dBm) LoRa (125KHz) 26.00-28.00 LoRa (250KHz) 26.00-28.00 LoRa (500KHz) 18.00-20.00 Test result Evolution mode Maximum peak output power (dBm) Antenna Gain (typical) (dBi): Total Power (mw) Distance (cm) Power Density (mW/cm²) Limit of Power Density (mW/cm²) Verdict LoRa (125KHz) 28.00 2.00 1000.00 20 0.1989 0.6013 Pass LoRa (250KHz) 28.00 2.00 1000.00 20 0.1989 0.6013 Pass LoRa (500KHz) 20.00 2.00 158.49 20 0.0315 0.6013 Pass Note: 1. The LoRa Module work frequency range used is 902 MHz ~ 928 MHz, the result close to the limit by the above formula, so we select 902MHz to calculate the exclusion power threshold. 2. More power list please refer to RF test report. Conclusion: RF exposure Evaluation Results: Compliance