FCC ID: 2ACQELR8X Radar Level Transmitter

Label Photos LR80, LR81 Flowline, Inc. 10500 Humbolt Street Los Alamitos, CA 90720 USA 000000 LR80-XXXX SN 000001 Flowline, Inc. 10500 Humbolt Street Los Alamitos, CA 90720 USA 000000 LR81-XXXX SN 000001 Location for FCC/IC FCC-ID: 2ACQELR8X IC:27195-LR8X FCC-ID: 2ACQELR8X IC:27195-LR8X Power: 12 to 30VDC Output: 4-20mA Enclosure: IP68, Type 6 Wetted Parts: PVDF Temperature: -40 to 140F Pressure: -14.5 to 43.5psi Power: 12 to 30VDC Output: 4-20mA with HART Enclosure: IP68, Type 6 Wetted Parts: PVDF Temperature: -40 to 176F Pressure: -14.5 to 43.5psi Location for FCC/IC Location for FCC/IC

| 1 Label Photos Label Photos LR83 Flowline, Inc. 10500 Humbolt St Los Alamitos, CA 90720 USA 000000 LR83-XXXX SN 000001 Location for FCC/IC FCC-ID: 2ACQELR8X IC:27195-LR8X Power: 12 to 30VDC Output: 4-20mA HART Enclosure: IP66/67 MWP: -14.5 to 43.5psi Wetted Parts: PVDF Temperature: -40 to 212F Location for FCC/IC

| 2 Label Photos Label Photos LR85 Flowline, Inc. 10500 Humbolt St Los Alamitos, CA 90720 USA 000000 LR85-XXXX SN 000001 Location for FCC/IC FCC-ID: 2ACQELR8X IC:27195-LR8X Power: 12 to 30VDC Output: 4-20mA HART Enclosure: IP66/67 MWP: Ambient Wetted Parts: PFA Temperature: -40 to 248F Location for FCC/IC Location for FCC/IC

| 3 Label Photos

Label and Label Location FCC ID: 2ACQELR8&X IC: 27195-LR8X Model No.: LR80 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. FCC ID: 2ACQELR8X IC: 27195-LR8X Model No.: LR81 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. FCC ID: 2ACQELR8&X IC: 27195-LR8X Model No.: LR84 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. FCC ID: 2ACQELR8&X IC: 27195-LR&X Model No.: LR85 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. FCC ID: 2ACQELR8&X IC: 27195-LR8X Model No.: LR&2 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. FCC ID: 2ACQELR8X IC: 27195-LR8X Model No.: LR&86 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. FCC ID: 2ACQELR&X IC: 27195-LR8X Model No.: LR&83 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. MO Label Location

2. FLOWLINE 12-05-2023 To: BVCPS, INC. 779 Montague Expressway, Milpitas, CA 95035 USA Dear Sir/Madam, Re: Signee, Proof of Authorization

|, Phil Colin, hereby authorize:

Michael Rafferty, Director of Engineering michael.rafferty@flowline.com 562.598.3015 Flowline, Inc., 10500 Humbolt Street, Los Alamitos, CA 90720 to act as signee for certifying for the following project(s):

FCC ID: 2ACQELR8X Product Description: Level Probing Radar Model: LR8X (X" means 0,1,3,4 and 5) sincerely, Phil Colin, Senior Project Manager phil.colin@flowline.com 962.598.3015 Flowline, Inc., 10500 Humbolt Street, Los Alamitos, CA 90720

Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 10-10-2023 FCC ID: 2ACQELR8X Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Flowline, 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. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing Flowline, Inc. (the applicant) 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. Cover List Link: (https://www.fcc.gov/supplychain/coveredlist) Applicant: Flowline, Inc. Address: 10500 Humbolt Street, Los Alamitos, CA 90720 Contact Person: Michael Rafferty, Director of Engineering Tel.: 562.598.3015 Email: michael.rafferty@flowline.com Sincerely, Rev 2/6/2023

LA.

=> FLOWLINE LEVEL BEST Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA FCC ID: 2ACQELR8X Date of Filing to TCB: 10-10-2023 Ref: Attestation Statements Part 2.911(d)(7) Filing Flowline, Inc. certifies that, as of the date of the filing of the application, Michael Rafferty is our designated U.S. agent for service of process for the above referenced FCC ID. Flowline, Inc. 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 and will notify the TCB/FCC in a timely manner if the US Processing Agent changes. BVCSP, Inc. 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. Designated U.S. Agent Information:

Name: Michael Rafferty FRN: 0034577775 Address: 10500 Humbolt Street, Los Alamitos, CA 90720 Contact Person: Michael Rafferty Tel.: (562) 598-3015 Email: michael.rafferty@flowline.com Sincerely,

(Applicant printed name) Phil Colin

(Applicant signature) |

(US Local Agent printed name)

(US Local Agent signature) Rev 2

775 Montague Expressway Milpitas, CA 95035 Tel: 408-526-1188 Fax: 408-526-1088 Email: certification@bureauveritas.com Website: https://www.cps.bureauveritas.com/

Confidentiality Request Letter Reason for Amendment (current / obsolete) Initial Release (obsolete) Adding CFR 2.459 (obsolete) Updated company template & Added text box

(obsolete) Added IC confidentiality letter form (obsolete) Corrections to STC form. Added reference to KDB

(obsolete) Updated company logo (current) Updated References and Contact Info Revision History From 1.0 1.0 2.0 3.0 4.0 5.0 6.0 To 1.0 2.0 3.0 4.0 5.0 6.0 7.0 Approved Date Nov-14-2006 August 11 - 2008 Jan-31-2012 March-26-2015 Nov-19-2015 Jun-26-2019 Aug-30-2020 SCS-F019: Confidentiality Request Letter Page 1 of 3 Rev 7.0 10-10-2023 To:

Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046-1609 Cc:

Bureau Veritas Consumer Products Services Inc. 775 Montague Expressway Milpitas, CA 95035 Subject: Confidentiality Request for FCC ID: 2ACQELR8X Pursuant to CFR 47 sections 0.457 and 0.459, we respectfully request permanent confidential treatment of the following Exhibits accompanying this application be held confidential:

Type of Confidentiality Requested Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Permanent Permanent i Permanent Permanent Permanent Permanent Permanent i Exhibit Block Diagram External Photos Internal Photos Operational Description/ Theory of Operation Parts List Tune-Up Procedure Schematics Test Setup Photos Users Manual The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Permanent Confidentiality:

The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality:

To avoid premature release of sensitive information prior to marketing or release of the product to the public, the applicant requests the following documents contained in this certification application be temporarily withheld from public disclosure for an initial period of 45 or 180 days; or for a specified date of not to exceed 180 days from the Grant Date The applicant understands that disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Clients signature:

Clients name & title: MICHAEL RAFFERTY, Director of Engineering Contact information / address: michael.rafferty@flowline.com, Flowline, Inc. 10500 Humbolt Street, Los Alamitos, CA 90720 i Permanent confidentiality may be requested in accordance with FCC KDB 726920 SCS-F019: Confidentiality Request Letter Page 2 of 3 Rev 7.0

10-10-2023 To: BVCPS, INC. 775 Montague Expressway, Milpitas, CA 95035 USA Dear Sir/Madam, Re: Family Model Declaration We, Flowline, Inc., for business and marketing purposes wish to list the following models:

FCC ID: 2ACQELR8X IC: 27195-LR8X Product Description: Level Probing Radar Model: LR8X (X means 0,1,3 and 5) All electronic parts, including RF and Bluetooth circuitry, are the same within these models. Differences including housing material, installation method or display inclusion cannot affect the RF performance of the product. The LR80 and LR81 are identical in every aspect and referenced by different model numbers solely for marketing purposes. Sincerely, Michael Rafferty, Director of Engineering michael.rafferty@flowline.com, 562.598.3015 Flowline, Inc., 10500 Humbolt Street, Los Alamitos, CA 90720

10-10-2023 To: BVCPS, INC. 775 Montague Expressway, Milpitas, CA 95035 USA Dear Sir/Madam, Re: Product Certification Representative Authorization Letter We, Flowline, Inc., hereby authorize Bureau Veritas Consumer Product Services, Inc. to act as a Certification Body for certifying for the following project(s):

FCC ID: 2ACQELR8X Product Description: Level Probing Radar Model: LR8X (X means 0,1,3 and 5) Sincerely, Michael Rafferty, Director of Engineering michael.rafferty@flowline.com 562.598.3015 Flowline, Inc., 10500 Humbolt Street, Los Alamitos, CA 90720 SCS-F018: Project and Product Certification Representative Authorization Letter Page 2 of 3 Rev 7.0 10-10-2023 To: BVCPS, INC. 775 Montague Expressway, Milpitas, CA 95035 USA Dear Sir/Madam, Re: Project and Product Certification Representative Authorization Letter We, Flowline, Inc., hereby authorize Bureau Veritas Consumer Product Services, Inc. to act as a Certification Body for certifying for the following project(s):

FCC ID: 2ACQELR8X Product Description: Level Probing Radar Model: LR8X (X means 0,1,3 and 5) We affirm that between Bureau Veritas Consumer Product Services, Inc. and Flowline, Inc., any difference in understanding, including test plan, measurement methods, applicable standards and relevant procedures and processes have been resolved prior to commencement of testing activities. Sincerely, Michael Rafferty, Director of Engineering michael.rafferty@flowline.com 562.598.3015 Flowline, Inc., 10500 Humbolt Street, Los Alamitos, CA 90720 SCS-F018: Project and Product Certification Representative Authorization Letter Page 3 of 3 Rev 7.0

Confidentiality Request Letter Federal Communications Commission Authorization and Evaluation Division FCC ID: 2ACQELR8X Confidentiality Request 1. Block Diagram 2. Schematics 3. Operational Description Sincerely, Name: Phil Colin, Project Engineer Date: 2021-04-29 Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, we hereby request confidential treatment of information accompanying this application as outlined below:

The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application.

Declaration of Conformity Date: May 22, 2021 Federal Communications Commission Authorization and Evaluation Division FCC ID: 2ACQELR8X Please be notified that we, the undersigned, Flowline, Inc. declares that the product which bears the above FCC ID is also compliant with the FCC requirements for sDOC. And the sDOC procedure shall be carried out prior to marketing the device in the US. Sincerely, Name: Phil Colin, Project Engineer Date: 2021-05-22 Declaration of Conformity Page 1 of 1

Declaration letter For our business issue and marketing requirement, we would like to list different model number as following:

Model No.: LR80, LR81, LR82, LR83, LR84, LR85, LR86 Model Difference: The EUT is made up of electronic part, housing part, process connection part, installation accessories part and antenna. All electronic parts including RF circuit are same within these models, and differences of other parts such as Shell Material, Installation method and power supply method etc. can not affect RF performance of the product. Only the differences of antennas can affect the RF performance and we selected the model LR84 with the largest antenna gain for all RF testing. Main difference as below. Installation Lens Antenna Lens Antenna Lens Antenna Signal Output House Method material Material Gain (dBi) Size (mm)

(4-20)mA/HART or RS485/MODBUS Protocol Beam Display angle 8 8 6 6 4 4 4 Optional NO NO NO Yes Yes Yes 21 29 35 35 51 44 51 Model No. LR80 LR81 LR82 LR83 LR84 LR85 LR86 Thread Thread Thread Thread Thread Flange Thread or PVDF PVDF PVDF PBT PBT PBT PBT PVDF PVDF PVDF PVDF PFA PFA PFA 15 15 23 23 30 28 30 Flange Name: Phil Colin, Project Engineer Date: 2021-04-29

Declaration of Authorization Address: 10500 Humbolt St., Los Alamitos, California 90720, United States We Name: Flowline, Inc. Declare that:

Name Representative of agent:

Marlin Chen Agent Company name:

MRT Technology (Suzhou) Co., Ltd Address:

City:

Country Suzhou China D8 Building, Youxin Industrial Park, No.2 Tian'edang Rd., Wuzhong Economic Development Zone, is authorized to apply for Certification of the following product(s):

Product:

FCC ID:

Model No.:

Serial Model No.:

LR Radar Level Instrument 2ACQELR8X LR84 LR80, LR81, LR82, LR83, LR85, LR86 Sincerely, Name: Phil Colin, Project Engineer Date: 2021-04-29