2BFMF-AC603H-WIFIThermostat

Ecostar Energy Solutions & Restoration Inc. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: April 01, 2024 FCC ID: 2BFMF-AC603H-WIFI Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Ecostar Energy Solutions & Restoration Inc. 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 Ecostar Energy Solutions & Restoration 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. Applicant: Ecostar Energy Solutions & Restoration Inc. Address: 8520 NW 44th court Lauderhill Florida United States 33351 Contact Person: Qingyu Yang Tel.: 7864318983 Email: [email protected] Sincerely, Signature:

Ecostar Energy Solutions & Restoration Inc. U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: April 01, 2024 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2BFMF-AC603H-WIFI Ecostar Energy Solutions & Restoration Inc. (“the applicant”) certifies that, as of the date of the filing of the application, Ecostar Energy Solutions & Restoration Inc. (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. Ecostar Energy Solutions & Restoration Inc. ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Ecostar Energy Solutions & Restoration Inc. FRN: 0035191923 Address: 8520 NW 44th court Lauderhill Florida United States 33351 Signature: Contact Person: Qingyu Yang Tel: 7864318983 Email: [email protected] Applicant Ecostar Energy Solutions & Restoration Inc. FRN: 0035191923 Address: 8520 NW 44th court Lauderhill Florida United States 33351 Signature: Contact Person: Qingyu Yang Tel: 7864318983 Email: [email protected]

Report No: SSP24030148A Antenna Test Report Page 1 of 4 Antenna Test Report Test Standard: Manufacturer: Product Name: Model: Report No.: Tested Date: Issued Date: Tested By: Approved By: IEEE 149-1979 Ecostar Energy Solutions & Restoration Inc. 2.4GHz Antenna AC603H-WIFI SSP24030148A 2024-03-18 2024-03-25 William Liu (Engineer) Lahm Peng (Manager) Prepared By: Shenzhen ZRLK Testing Technology Co., Ltd. 1F, No. 35 Building, Changxing Technology Industrial Park, Yutang Street, Guangming New District, Shenzhen City, Guangdong Province, China Tel.: +86-755-33019599 Fax.: +86-755-33019599 Website: www.zrlklab.com Note: This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen ZRLK Testing Technology Co., Ltd. Report No: SSP24030148A Antenna Test Report Page 2 of 4 1. General Information 1.1 Product Information Manufacturer Manufacturer: Ecostar Energy Solutions & Restoration Inc. Address of Manufacturer: 8520 NW 44th court Lauderhill, fl 33351 General Description of Antenna Product Name: 2.4GHz Antenna Model No.: Thermostat Frequency Range: 2400MHz-2483.5MHz Type of Antenna: PCB Antenna Antenna Gain: 0dBi (Max.) Impedance: 50 ohm Antenna View (15mm*5mm) 1.2 Test Methodology All measurements contained in this report were conducted with standards IEEE 149-1979 for IEEE Standard Test Procedures for Antennas. 1.3 Test Facilities Testing Lab: Shenzhen ZRLK Testing Technology Co., Ltd. All measurement facilities used to collect the measurement data are located at 1F, No. 35 Building, Changxing Technology Industrial Park, Yutang Street, Guangming New District, Shenzhen City, Guangdong Province, China Report No: SSP24030148A Antenna Test Report Page 3 of 4 2. OTA Test 2.1 Gain Frequency Peak Gain (dBi) Polarity 2402MHz 0 Horizontal 2402MHz -0.34 Vertical 2442MHz -1.53 Horizontal 2442MHz -2.26 Vertical 2480MHz -2.46 Horizontal 2480MHz -2.98 Vertical 2.2 Radiation Pattern View Report No: SSP24030148A Antenna Test Report Page 4 of 4

Ecostar Energy Solutions & Restoration Inc. Date: April 01, 2024 Product Model Number: AC603H-WIFI, AC605H-WIFI, AC829H-WIFI, AC8300H-WIFI, AC8400H-WIFI, AC8500H-WIFI FCC ID: 2BFMF-AC603H-WIFI To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following: • Testing • Approval applications and procedures We declare that ORGANIZATION. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by ORGANIZATION. on our behalf shall have the same effect as acts of our own. By: Qingyu Yang Contact Listed on FCC Wesbite Title: Manager Email: [email protected] Telephone: 7864318983 On behalf of: Ecostar Energy Solutions & Restoration Inc.

Ecostar Energy Solutions & Restoration Inc. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: April 1, 2024 Subject; Request for Confidentiality FCC ID: 2BFMF-AC603H-WIFI To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure Software Security Requirements for UNII devices In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Qingyu Yang Title: Manager

Ecostar Energy Solutions & Restoration Inc. Model Difference Statement Dear Sir/Madam, Added models AC605H-WIFI, AC829H-WIFI, AC8300H-WIFI, AC8400H-WIFI, AC8500H-WIFI basis of the original product AC603H-WIFI. The color of appearance and model name of series models listed are different from the main model, but the circuit and the electronic construction are the same, declared by the manufacturer. Sincerely, Name: Qingyu Yang Title: Manager Company name: Ecostar Energy Solutions & Restoration Inc. Address: 8520 NW 44th court Lauderhill Florida United States 33351

Report No: SSP24030148-1E FCC ID: 2BFMF-AC603H-WIFI Annex of Test Report Annex D. Label and Information FCC Label Sample FCC Label Specifications Text is Black in color and is justified. Labels are printed in indelible ink on permanent adhesive backing or silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Where the EUT is constructed in two or more sections connected by wires and marketed together, the above statement is required to be affixed only to the main control unit. When the EUT is so small or for such use that it is not practicable to place the statement on it, the above information shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. FCC Label Location

FCC ID: 2BFMF-AC603H-WIFI RF Exposure Evaluation Limits The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz Friis transmission formula: Pd = (Pout*G)/(4*pi*r 2 ) Where Pd = power density in mW/cm 2 , Pout = output power to antenna in mW; G = gain of antenna in linear scale, Pi = 3.1416; R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Test Result of RF Exposure Evaluation WiFi mode Mode Output power to antenna (dBm) Tune-up Power(dBm) Max Tune-up Power(dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result 802.11b 18.52 18(±1) 19 79.43 0.0158 1.0 PASS Remark: antenna gain=0dBi

FCC ID: 2BFMF-AC603H-WIFI RF Exposure Evaluation Limits The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz Friis transmission formula: Pd = (Pout*G)/(4*pi*r 2 ) Where Pd = power density in mW/cm 2 , Pout = output power to antenna in mW; G = gain of antenna in linear scale, Pi = 3.1416; R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Test Result of RF Exposure Evaluation WiFi mode Mode Output power to antenna (dBm) Tune-up Power(dBm) Max Tune-up Power(dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result 802.11b 18.52 18(±1) 19 79.43 0.0158 1.0 PASS Remark: antenna gain=0dBi