2BBL8-ATMO-TU2The Portable Air Pollution Monitor

1. Installthe Atmotube appEnables data viewing and storage via Bluetooth. It’s free on the App Store and Google Play. 4. Pairing the AtmotubePlease follow the in-app instructions to pair the Atmotube with your smartphone. By default, the Atmotube is already in connection detection mode. The LED on the device should blink blue while searching for the smartphone. Once the pairing is successful, the LED will stop blinking blue. Note: By default, the GPS feature on the Atmotube is disabled. To activate GPS, navigate to the settings in the mobile application and enable the GPS option. 2. Charge your deviceMake sure your device is fully charged. To c harge Atmotube, use the included USB Typ e-C cable and connect it to a power supply for at least 2 hours. The LED light will change its color from orange to green once the Atmotube is fully charged.3. Unplug the device fromthe power cableEnsure the device is fully charged and unplugged before starting. This is necessary for accessing the complete LED indications during setup. LED IndicatorAir Quality Score (AQS) Quick Start Guide PORTABLE AIR POLLUTION MONITOR When you pressthe button, the LED shows the current AQS level. GOODMODERATEPOLLUTEDVERY POLLUTEDSEVERELY POLLUTED For more information go to atmotube.com/pro2 SCAN TO ACCESS USER SUPPORT &tZE/E' dŚŝƐĚĞǀŝĐĞĐŽŵƉůŝĞƐǁŝƚŚƉĂƌƚϭρŽĨƚŚĞ&ZƵůĞƐ͘KƉĞƌĂƚŝŽŶŝƐƐƵďũĞĐƚƚŽƚŚĞĨŽůůŽǁŝŶŐƚǁŽ ĐŽŶĚŝƚŝŽŶƐ͗ ;ϭͿdŚŝƐĚĞǀŝĐĞŵĂLJŶŽƚĐĂƵƐĞŚĂƌŵĨƵůŝŶƚĞƌĨĞƌĞŶĐĞ͕ĂŶĚ;ϮͿƚŚŝƐĚĞǀŝĐĞŵƵƐƚĂĐĐĞƉƚĂŶLJ ŝŶƚĞƌĨĞƌĞŶĐĞƌĞĐĞŝǀĞĚ͕ŝŶĐůƵĚŝŶŐŝŶƚĞƌĨĞƌĞŶĐĞƚŚĂƚŵĂLJĐĂƵƐĞƵŶĚĞƐŝƌĞĚŽƉĞƌĂƚŝŽŶ͘ ŶLJĐŚĂŶŐĞƐŽƌŵŽĚŝĨŝĐĂƚŝŽŶƐŶŽƚĞdžƉƌĞƐƐůLJĂƉƉƌŽǀĞĚďLJƚŚĞƉĂƌƚLJƌĞƐƉŽŶƐŝďůĞĨŽƌĐŽŵƉůŝĂŶĐĞ ĐŽƵůĚǀŽŝĚƚŚĞƵƐĞƌΖƐĂƵƚŚŽƌŝƚLJƚŽŽƉĞƌĂƚĞƚŚĞĞƋƵŝƉŵĞŶƚ͘ dŚŝƐĞƋƵŝƉŵĞŶƚŚĂƐďĞĞŶƚĞƐƚĞĚĂŶĚĨŽƵŶĚƚŽĐŽŵƉůLJǁŝƚŚƚŚĞůŝŵŝƚƐĨŽƌĂůĂƐƐĚŝŐŝƚĂůĚĞǀŝĐĞ͕ ƉƵƌƐƵĂŶƚƚŽƉĂƌƚϭρŽĨƚŚĞ&ZƵůĞƐ͘dŚĞƐĞůŝŵŝƚƐĂƌĞĚĞƐŝŐŶĞĚƚŽƉƌŽǀŝĚĞƌĞĂƐŽŶĂďůĞƉƌŽƚĞĐƚŝŽŶ ĂŐĂŝŶƐƚŚĂƌŵĨƵůŝŶƚĞƌĨĞƌĞŶĐĞŝŶĂƌĞƐŝĚĞŶƚŝĂůŝŶƐƚĂůůĂƚŝŽŶ͘dŚŝƐĞƋƵŝƉŵĞŶƚŐĞŶĞƌĂƚĞƐ͕ƵƐĞƐĂŶĚĐĂŶ ƌĂĚŝĂƚĞƌĂĚŝŽĨƌĞƋƵĞŶĐLJĞŶĞƌŐLJĂŶĚ͕ŝĨŶŽƚŝŶƐƚĂůůĞĚĂŶĚƵƐĞĚŝŶĂĐĐŽƌĚĂŶĐĞǁŝƚŚƚŚĞŝŶƐƚƌƵĐƚŝŽŶƐ͕ ŵĂLJĐĂƵƐĞŚĂƌŵĨƵůŝŶƚĞƌĨĞƌĞŶĐĞƚŽƌĂĚŝŽĐŽŵŵƵŶŝĐĂƚŝŽŶƐ͘,ŽǁĞǀĞƌ͕ƚŚĞƌĞŝƐŶŽŐƵĂƌĂŶƚĞĞƚŚĂƚ ŝŶƚĞƌĨĞƌĞŶĐĞǁŝůůŶŽƚŽĐĐƵƌŝŶĂƉĂƌƚŝĐƵůĂƌŝŶƐƚĂůůĂƚŝŽŶ͘/ĨƚŚŝƐĞƋƵŝƉŵĞŶƚĚŽĞƐĐĂƵƐĞŚĂƌŵĨƵů ŝŶƚĞƌĨĞƌĞŶĐĞƚŽƌĂĚŝŽŽƌƚĞůĞǀŝƐŝŽŶƌĞĐĞƉƚŝŽŶ͕ǁŚŝĐŚĐĂŶďĞĚĞƚĞƌŵŝŶĞĚďLJƚƵƌŶŝŶŐƚŚĞĞƋƵŝƉŵĞŶƚ ŽĨĨĂŶĚŽŶ͕ƚŚĞƵƐĞƌŝƐĞŶĐŽƵƌĂŐĞĚƚŽƚƌLJƚŽĐŽƌƌĞĐƚƚŚĞŝŶƚĞƌĨĞƌĞŶĐĞďLJŽŶĞŽƌŵŽƌĞŽĨƚŚĞ ĨŽůůŽǁŝŶŐŵĞĂƐƵƌĞƐ͗ ͶZĞŽƌŝĞŶƚŽƌƌĞůŽĐĂƚĞƚŚĞƌĞĐĞŝǀŝŶŐĂŶƚĞŶŶĂ͘ Ͷ/ŶĐƌĞĂƐĞƚŚĞƐĞƉĂƌĂƚŝŽŶďĞƚǁĞĞŶƚŚĞĞƋƵŝƉŵĞŶƚĂŶĚƌĞĐĞŝǀĞƌ͘ ͶŽŶŶĞĐƚƚŚĞĞƋƵŝƉŵĞŶƚŝŶƚŽĂŶŽƵƚůĞƚŽŶĂĐŝƌĐƵŝƚĚŝĨĨĞƌĞŶƚĨƌŽŵƚŚĂƚƚŽǁŚŝĐŚƚŚĞƌĞĐĞŝǀĞƌŝƐ ĐŽŶŶĞĐƚĞĚ͘ ͶŽŶƐƵůƚƚŚĞĚĞĂůĞƌŽƌĂŶĞdžƉĞƌŝĞŶĐĞĚƌĂĚŝŽͬdsƚĞĐŚŶŝĐŝĂŶĨŽƌŚĞůƉ͘ &ZĂĚŝĂƚŝŽŶdžƉŽƐƵƌĞ^ƚĂƚĞŵĞŶƚ dŚŝƐĞƋƵŝƉŵĞŶƚĐŽŵƉůŝĞƐǁŝƚŚ&ƌĂĚŝĂƚŝŽŶĞdžƉŽƐƵƌĞůŝŵŝƚƐƐĞƚĨŽƌƚŚĨŽƌĂŶƵŶĐŽŶƚƌŽůůĞĚ ĞŶǀŝƌŽŶŵĞŶƚ͘ dŚŝƐƚƌĂŶƐŵŝƚƚĞƌŵƵƐƚŶŽƚďĞĐŽͲůŽĐĂƚĞĚŽƌŽƉĞƌĂƚŝŶŐŝŶĐŽŶũƵŶĐƚŝŽŶǁŝƚŚĂŶLJŽƚŚĞƌĂŶƚĞŶŶĂŽƌ ƚƌĂŶƐŵŝƚƚĞƌ͘

Atmotech Inc Add: 100 Pine St, Suite 1250, San Francisco, California, United States Tel: +351915200159 Email: [email protected] Attestation Letter Date: 2025-12-08 FEDER AL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear S ir or Madam: Our product The Portable Air Pollution Monitor, model: Atmotube PRO 2, FCC ID:2BBL8-ATMO -TU2, for marketing purpose, this product only supports BLE 1M,.The other functions, bands and modes was disabled to use by manufacturer in the software, the end user has no capability to activate it. Sincerely, Printed Name: Igor Mikhnenko Title: Secretary

Atmotech Inc Add: 100 Pine St, Suite 1250, San Francisco, California, United States Tel: +351915200159 Email: [email protected] CFR 47 §2.911(d)(5)(i)(ii) Attestation Letter Attes tation Letter Date: 2025-12-08 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i)(ii) Filing FCC I D: 2BBL8-ATMO-TU2 Atmotech Inc(“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Atmotech Inc certifies that as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Atmotech Inc certifies that the equipment does not use Kaspersky's software information. Sincerely, Signature: Contact Person: Igor Mikhnenko Title: Secretary

U.S. AGENT LETTER OF ATTESTATION D ate: 2025-12-08 F EDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 R ef: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID:2BBL8-ATMO-TU2 Atmotech Inc certifies that, as of the date of the application, Iconsigh is our designated U.S. agent for service of process for the above referenced FCC ID:2BBL8-ATMO-TU2 accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. I consigh accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. D esignated U.S. Agent Information: Company Name: Iconsigh Address: 2310 Homestead Road, Suite C1, Los Altos, CA, 94024, USA FRN: 0033398652 Tel.: +1 (408) 320-9867 Email: [email protected] Signed by (printed name): Benjamin Kaur Signature: Ap plicant: Atmotech Inc Address: 100 Pine St, Suite 1250, San Francisco, California, United State FRN: 0025297052 Tel: +351915200159 Email: [email protected] Printed name: Igor Mikhnenko Signature:

QA-FR-170-B Atmotech Inc Add: 100 Pine St, Suite 1250, San Francisco, California, United States Tel: +351915200159 Email: [email protected] FCC Authorization Date: 2025-12-08 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We, Atmotech Inc hereby authorizes China Certification ICT Co., Ltd (Dongguan) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by China Certification ICT Co., Ltd (Dongguan) on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Client’s signature Printed Name: Igor Mikhnenko Title: Secretary

QA -FR-171-A Atmotech Inc Ad d: 100 Pine St, Suite 1250, San Francisco, California, United States Tel: +351915200159 Email: [email protected] FCC Confidential Authorization Date: 2025-12-08 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID:2BBL8-ATMO-TU2 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Atmotech Inc hereby requests long-term confidential treatment of information accompanying this application as outlined below: •Block Diagram •Schematics •Operation Description T he above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely, Signature: Printed Name: Igor Mikhnenko Title: Secretary

China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-EXP Page 1 / 4 EUT EXTERNAL PHOTOGRAPHS China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-EXP Page 2 / 4 China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-EXP Page 3 / 4 China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-EXP Page 4 / 4 *****END *****

8.00 Model: Atmotube P RO 2 Assembled in PRC FCC ID: 2BBL8-ATMO-TU2 Input: 5 V 1 A Designed by Atmotech Inc Dark Gray PANTONE 7540 C 21 mm 15 mm Model: Atmotube P RO 2 Assembled in PRC FCC ID: 2BBL8-ATMO-TU2 Input: 5 V 1 A Designed by Atmotech Inc

China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-INP Page 1 / 11 EUT INTERNAL PHOTOGRAPHS China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-INP Page 2 / 11 China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-INP Page 3 / 11 China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-INP Page 4 / 11 China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-INP Page 5 / 11 Antenna China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-INP Page 6 / 11 China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-INP Page 7 / 11 China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-INP Page 8 / 11 China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-INP Page 9 / 11 China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-INP Page 10 / 11 China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-INP Page 11 / 11 *****END *****

China Certification ICT Co., Ltd (Dongguan) Report No.:2503Y81182E-RF-00A Report Template: RF-FCC-BLE-A/0 Page 65 of 67 5. RF EXPOSURE EVALUATION 5.1 Applicable Standard According to§15.247(i) and §1.1310, systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. According to KDB447498 D01 General RF Exposure Guidance v06: The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] • [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where • f(GHz) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. 5.2 Measurement Result Frequency (MHz) Conducted Output Power Including Tolerance ▲ Distance (mm) Calculated value Threshold (1-g) SAR Test Exclusion (dBm) (mW) 2402-2480 6 3.98 5 1.3 3 Yes Note: The Maximum Conducted Power including Tune-up Tolerance was declared by manufacturer. Result: Compliant. The stand-alone SAR test is not necessary.

APPLICATION SPECIFICATION REVISION: ECR/ECN INFORMATION: TITLE: WIFI GNSS Chip Combo Antenna Application Specification SHEET No. A EC No: 660310 1 of 28 DATE: 2021/04/10 DOCUMENT NUMBER: CREATED / REVISED BY: CHECKED BY: APPROVED BY: AS-2169420001 Liu Hai 2021/04/08 Stern Zhao 2021/04/08 Chris Zhong 2021/04/08 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).DOC TITLE WIFI GNSS CHIP COMBO ANTENNA TABLE OF CONTENTS 1.0 SCOPE 2.0 PRODUCT DESCRIPTION 3.0 APPLICABLE DOCUMENTS 4.0 ANTENNA PERFORMANCE 5.0 MATCHING NETWORK DESRICPTION 6.0 RECOMMENDED REFLOW CONDITION 7.0 RF PERFORMANCE AS A FUNCTION OF IMPLEMENTATION 8.0 CHANGED HISTORY Antenna manufacturer: Molex Interconnect (Shanghai) Co. Ltd. CN Address: Building 1, No. 889 Yishan Road Xuhui District Shanghai, 200233 CHINA APPLICATION SPECIFICATION REVISION: ECR/ECN INFORMATION: TITLE: WIFI GNSS Chip Combo Antenna Application Specification SHEET No. A EC No: 660310 2 of 28 DATE: 2021/04/10 DOCUMENT NUMBER: CREATED / REVISED BY: CHECKED BY: APPROVED BY: AS-2169420001 Liu Hai 2021/04/08 Stern Zhao 2021/04/08 Chris Zhong 2021/04/08 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).DOC WIFI GNSS CHIP COMBO ANTENNA 1.0 SCOPE This specification describes the antenna application and surrounding. The information in this document is for reference and benchmark purposes only. Antenna illustrations in this document are generic representations. They are not intended to be an image of any antenna listed in the scope. 2.0 PRODUCT DESCRIPTION 2.1 PRODUCT NAME AND SERIES NUMBER (S) Product name: WIFI GNSS chip combo antenna Series Number: 2169420001 2.2 DESCRIPTION 216942 is a ceramic SMT/chip antenna simultaneously working at frequency bands of GNSS (1.561/1.575/1.601GHz) and WiFi (2.4/5.8GHz). It eliminates the need of putting two standalone antennas to support the two standards. It is compact size (3.2x1.6x1.2mm) and only needs a small keep-out space (8x6mm). Hence, 216942 is a perfect choice for those space constrained and cost sensitive applications, for example, wearable/portable devices, car black box, tracker, navigation devices, etc. 2.3 PRODUCT STRUCTURE INFORMATION Please refer to PS-2169420001 for full information. Molex 2169420001 3D VIEW APPLICATION SPECIFICATION REVISION: ECR/ECN INFORMATION: TITLE: WIFI GNSS Chip Combo Antenna Application Specification SHEET No. A EC No: 660310 3 of 28 DATE: 2021/04/10 DOCUMENT NUMBER: CREATED / REVISED BY: CHECKED BY: APPROVED BY: AS-2169420001 Liu Hai 2021/04/08 Stern Zhao 2021/04/08 Chris Zhong 2021/04/08 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).DOC 3.0 APPLICABLE DOCUMENTS DOCUMENT NUMBER DESCRIPTION Sale Drawing (SD) SD-2169420001 Mechanical Dimension of the product Product Specification (PS) PS-2169420001 Product Specification Packing Drawing (PK) PK-2169420001 Product packaging specifications 4.0 ANTENNA PERFORMANCE 4.1 RF TEST CONDITIONS All measurements are done of the antenna mounted on a reference PCB (80*40*0.8mm) with VNA Agilent E5071C and Over-The-Air (OTA) chamber. FIGURE4.1.1 ANTENNA LOADED WITH REFERENCE PCB TESTED WITH VNA E5071C DUT APPLICATION SPECIFICATION REVISION: ECR/ECN INFORMATION: TITLE: WIFI GNSS Chip Combo Antenna Application Specification SHEET No. A EC No: 660310 4 of 28 DATE: 2021/04/10 DOCUMENT NUMBER: CREATED / REVISED BY: CHECKED BY: APPROVED BY: AS-2169420001 Liu Hai 2021/04/08 Stern Zhao 2021/04/08 Chris Zhong 2021/04/08 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).DOC FIGURE4.1.2 ANTENNA LOADED WITH REFERENCE PCB TESTED IN OTA CHAMBER 4.2 ANTENNA PERFORMANCE DESCRIPTION EQUIPMENT Requirements (For GPS) Requirements (For WIFI) Frequency Range VNA E5071C 1561.098± 2.046 MHz 1575.42± 1.023 MHz 1602.56± 4MHz 2.4- 2.5GHz 5.15- 5.85GHz Return Loss VNA E5071C < -6 dB < -10 dB < -6 dB < -7 dB < -5 dB Peak Gain (Max) OTA Chamber 0.4dBi 0.8dBi 0.8dBi 1.3dBi 3.0dBi Average Total Efficiency OTA Chamber >40% >45% >45% >50% >65% Polarization OTA Chamber Linear Input Impedance VNA E5071C 50 ohms Note that the above antenna performance is measured with just the antenna mounted on a reference PCB to similar a free-space condition. When implement into the system, the frequency resonant might be off-tune due to the loading of surrounding components especially metal plane. This off-tune can be compensated through matching. Although module manufacturers specify a peak gain limit, it is based on free-space conditions. The peak gain will be degraded by 1 to 2dBi in the actual implementation as the radiation pattern will change due to the surround components. As such, during selection of antenna, you can select one with high peak gain to compensate for the loss. Molex can offer assistant to choose the best location and best tuning in-order to meet this peak gain requirement. DUT APPLICATION SPECIFICATION REVISION: ECR/ECN INFORMATION: TITLE: WIFI GNSS Chip Combo Antenna Application Specification SHEET No. A EC No: 660310 5 of 28 DATE: 2021/04/10 DOCUMENT NUMBER: CREATED / REVISED BY: CHECKED BY: APPROVED BY: AS-2169420001 Liu Hai 2021/04/08 Stern Zhao 2021/04/08 Chris Zhong 2021/04/08 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).DOC APPLICATION SPECIFICATION REVISION: ECR/ECN INFORMATION: TITLE: WIFI GNSS Chip Combo Antenna Application Specification SHEET No. A EC No: 660310 6 of 28 DATE: 2021/04/10 DOCUMENT NUMBER: CREATED / REVISED BY: CHECKED BY: APPROVED BY: AS-2169420001 Liu Hai 2021/04/08 Stern Zhao 2021/04/08 Chris Zhong 2021/04/08 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).DOC 4.3 RETURN LOSS PLOT All measurements in this document are done on a reference PCB. FIGURE 4.3.1 RETURN LOSS OF ANTENNA AT GPS BAND IN FREE SPACE FIGURE 4.3.2 RETURN LOSS OF ANTENNA AT WIFI BAND IN FREE SPACE APPLICATION SPECIFICATION REVISION: ECR/ECN INFORMATION: TITLE: WIFI GNSS Chip Combo Antenna Application Specification SHEET No. A EC No: 660310 7 of 28 DATE: 2021/04/10 DOCUMENT NUMBER: CREATED / REVISED BY: CHECKED BY: APPROVED BY: AS-2169420001 Liu Hai 2021/04/08 Stern Zhao 2021/04/0…

Text truncated - open the document above for the full version.

TEST REPORT Applicant: Atmotech Inc Address: 100 Pine St, Suite 1250, San Francisco, California, United States FCC ID: 2BBL8-ATMO-TU2 Product Name: The Portable Air Pollution Monitor Standard(s): 47 CFR Part 15, Subpart C(15.247) ANSI C63.10-2020 KDB 558074 D01 15.247 Meas Guidance v05r02 The above device has been tested and found compliant with the requirement of the relative standards by China Certification ICT Co., Ltd (Dongguan) Report Number: 2503Y81182E-RF-00A Date Of Issue: 2025-12-02 Reviewed By: Calvin Chen Title: RF Test Supervisor Approved By: Sun Zhong Title: EMC Manager Test Laboratory: China Certification ICT Co., Ltd (Dongguan) Room 101 & 201, Building 2, 256 Pingdong Road, Dalang Town, Dongguan City, Guangdong, China Tel: +86-769-83085888 www.ccttt.com.cn China Certification ICT Co., Ltd (Dongguan) Report No.:2503Y81182E-RF-00A Report Template: RF-FCC-BLE-A/0 Page 2 of 67 Test Facility The Test site used by China Certification ICT Co., Ltd (Dongguan) to collect test data is located on the Room 101 & 201, Building 2, 256 Pingdong Road, Dalang Town, Dongguan City, Guangdong, China. The lab has been recognized as the FCC accredited lab under the KDB 974614 D01 and is listed in the FCC Public Access Link (PAL) database, FCC Registration No. : 442868, the FCC Designation No. : CN1314. Declarations China Certification ICT Co., Ltd (Dongguan) is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with a triangle symbol ―▲‖. Customer model name, addresses, names, trademarks etc. are not considered data. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report cannot be reproduced except in full, without prior written approval of the Company. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report may contain data that are not covered by the accreditation scope and shall be marked with an asterisk ―★‖. Each test item follows the test standard(s) without deviation. China Certification ICT Co., Ltd (Dongguan) Report No.:2503Y81182E-RF-00A Report Template: RF-FCC-BLE-A/0 Page 3 of 67 CONTENTS DOCUMENT REVISION HISTORY .......................................................................................... 5 1. GENERAL INFORMATION .................................................................................................... 6 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ....................................................... 6 1.1.1 General ........................................................................................................................................................... 6 1.1.2 Operation Frequency Detail ........................................................................................................................... 6 1.1.3 Antenna Information Detail▲ ....................................................................................................................... 6 1.1.4 Accessory Information ................................................................................................................................... 7 1.2 DESCRIPTION OF TEST CONFIGURATION ........................................................................................... 7 1.2.1 EUT Operation Condition: ............................................................................................................................. 7 1.2.2 Support Equipment List and Details .............................................................................................................. 7 1.2.3 Support Cable List and Details ...................................................................................................................... 7 1.2.4 Block Diagram of Test Setup ......................................................................................................................... 8 1.3 MEASUREMENT UNCERTAINTY .......................................................................................................... 9 2. SUMMARY OF TEST RESULTS .......................................................................................... 10 3. REQUIREMENTS AND TEST PROCEDURES .................................................................. 11 3.1 AC LINE CONDUCTED EMISSIONS .................................................................................................... 11 3.1.1 Applicable Standard ..................................................................................................................................... 11 3.1.2 EUT Setup.................................................................................................................................................... 12 3.1.3 EMI Test Receiver Setup ............................................................................................................................. 12 3.1.4 Test Procedure ............................................................................................................................................. 13 3.1.5 Corrected Amplitude & Margin Calculation ................................................................................................ 13 3.2 RADIATION SPURIOUS EMISSIONS .................................................................................................... 14 3.2.1 Applicable Standard ..................................................................................................................................... 14 3.2.2 EUT Setup.................................................................................................................................................... 14 3.2.3 EMI Test Receiver & Spectrum Analyzer Setup ......................................................................................... 15 3.2.4 Test Procedure ..........…

Text truncated - open the document above for the full version.

China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-00A-TSP Page 1 / 5 TEST SETUP PHOTOGRAPHS Conducted Emissions Front View Conducted Emissions Side View China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-00A-TSP Page 2 / 5 Radiated Emission 30 MHz-1 GHz View Radiated Emission 9 kHz-30 MHz Parallel View China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-00A-TSP Page 3 / 5 Radiated Emission 9 kHz-30 MHz Perpendicular View Radiated Emission 9 kHz-30 MHz Ground-parallel View China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-00A-TSP Page 4 / 5 Radiated Emission Below 1GHz View Radiated Emission 1-18GHz View China Certification ICT Co., Ltd (Dongguan) EXHIBIT No.: 2503Y81182E-RF-00A-TSP Page 5 / 5 Radiated Emission 18-25GHz View Radiated Emission Above 1GHz View *****END *****