2BAF6-HEATER650Boiler

■ Boiler Operation Manual MODEL : OM-Heater-650 Size : 150 x 240 x 125mm(H) Rated Voltage : AC 120V 50/60Hz Rated Power : 360W Rated Current : 3A ■ Safety Precautions 1. Before filling the unit with water, make sure the hoses between the boiler and the mat are securely connected. Failure to do so may result in water leakage. 2. Before plugging in the power cord, verify that the power supply matches the rated voltage of the product. Failure to do so may cause electric shock or fire. 3. Place the unit on a flat, level surface. If the unit is tilted, operation will stop automatically. 4. Always unplug the power cord before inspecting the unit or draining the water. Failure to do so may result in electric shock. 5. Do not place the mat more than 70 cm (27.6 inches) higher than the boiler unit. Poor water circulation may prevent proper operation. 6. When filling the water tank, add water slowly to avoid overflow. Overflowing water may cause electric shock or water leakage. 7. Use only purified water or bottled drinking water. Do not fill the unit with any other liquids. 8. When connecting the hoses between the unit and the mat, ensure that the hoses are not bent or kinked. Restricted water flow may prevent proper operation. ■ Installation 1. Place the heating mat in the desired location. 2. Connect the hoses between the boiler unit and the mat. 3. Open the water inlet cap, fill the unit with water, and securely close the cap. 4. Plug the power cord into an electrical outlet. The LCD will illuminate for approximately 5 seconds and then turn off. 1. . ■ LCD , Touch Key ■ Operation 1. The unit operates only when there is sufficient water inside the tank. If the tank is empty, a warning message will appear and the unit will not operate. 2. Touch the Power button to start operation. The unit will operate using the default temperature and operating time. If no settings are changed during operation, the unit will automatically stop after the preset time has elapsed. ■ Default Settings  Operating Time: 10 hours  Water Temperature: 98°F ■ Adjustable Range  Operating Time: 1 to 24 hours  Water Temperature: 68°F to 158°F ■ Settings 1. Water Temperature Adjustment While the unit is operating, touch the ▲ or ▼ button to adjust the water temperature. When either button is touched, the currently set temperature is displayed on the LCD. Continue pressing ▲ or ▼ to adjust the temperature.  Each press changes the temperature by 1°F.  Press and hold the button to change the temperature rapidly. 2. Operating Time Adjustment While the unit is operating, touch the SET button, then touch ▲ or ▼ to adjust the operating time. The remaining operating time will be displayed on the LCD.  Each press changes the operating time by 15 minutes.  Press and hold the button to change the time rapidly. ■ Error Messages The following warning messages may appear on the LCD. EMPTY The water tank is empty. (Displayed for 10 seconds.) The unit will not operate until water has been added. Add Water The water level is low and additional water is required. (Displayed for 10 seconds.) FULL Indicates that the water tank is full while adding water. (Displayed for 10 seconds.) ERROR2 The internal temperature sensor has malfunctioned. (Displayed for 30 seconds.) The unit will stop operating. Service or replacement is required before the unit can be used again. FCC Statement 1.This device complies with Part 15 of the FCC Rules. Operation is subject to thefollowing two conditions: (1)This device may not cause harmful interference.(2)This device must accept any interference received, including interference that maycause undesired operation. 2.Changes or modifications not expressly approved by the party responsible forcompliance could void the user’s authority to operate the equipment. Note:This equipment has been tested and found to comply with the limits for a class Bdigital device,pursuant to Part 15 of the FCC Rules. These limits are designed to providereasonable 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,may cause harmful interference to radio communications.However,there is no guarantee that interference will not occur in a particular installation.if this equipment does cause harmful interference to radio or television reception,which can be determined by turning the equipment off and on,the user is encouraged to try to correct the interference by one or more of the following measures: •Reorient or relocate the receiving antenna. •Increase the separation between the equipment and receiver. •Connect the equipment into an outlet on a circuit different from that to which thereceiver is connected. •Consult the dealer or an experienced radio/TV technician for help. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction ISED Statement This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: 1. This device may not cause interference. 2. This device must accept any interference, including interference that may cause undesired operation of the device. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes : 1) L’appareil ne doit pas produire de brouillage; 2) L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement. …

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External

LABLE SERIAL NO : xxxxxxxxSERIAL NO : xx(Year)xx(Month)xxxx(Serial) MFG Date : xx / xxxxMFG Date : xx(Month) / xxxx(Year) MODEL NUMBER : OM-Heater-650 INPUT : 120V~ 60Hz 3.0A 360W Indoor Use Only MADE IN CHINA FCC ID : 2BAF6-HEATER650 , IC : 35423-HEATER650 401066

Internal Antenna

RF EXPOSURE EVALUATION EUT Specification EUT Boiler Model Number OM-Heater-650 FCC ID 2BAF6- HEATER650 Antenna gain (Max) -0.52 dBi Operation Frequency 2480MHz Power Supply AC 120 V Classification Per Stipulated Test Standard §15.247(i), §2.1093 Modulation GFSK Max. output power 2.4GHz: -6.03dBm (0.000249W) Test Requirement: According to ß15.247(i) and ß1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Routine SAR evaluation refers to that specifically required by ß2.1093, using measurements or computer simulation. When routine SAR evaluation is not required, portable transmitters with output power greater than the applicable low threshold require SAR evaluation to quality for TCB approval. One antenna is available for the EUT. The minimum separation distance is 5mm. Page 2 of 2 Measurement Result 2.4GHz: Transmit Frequency (MHz) Mode Measured Power (dBm) Tune up Power (dBm) Max tune up power (dBm) Calculation Result 1-g SAR 2480 GFSK -6.03 -6±1 -5 0.279 3 According to KDB 447498, no simultaneous SAR measurement is required. Signature: Alan He Date: 2026-7-06

ReportNo.:XH20260624002 Page1stof12 TESTREPORT Compiledby:Reviewedby: Approvedby:Date: June24,2026 Preparedby: ShenzhenXinHuaTechnologyco.,Ltd E-mail:[email protected] ProductName: Boiler Model/Typereference: OM-Heater-650 ReportNumber: XH20260624002 DateofIssue: June24,2026 TestStandards: GB/T9410-2021 ANSI/IEEEStd149-1979 Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua ReportNo.:XH20260624002 Page2ndof12 Version Contents 1.GeneralInformation................................................................................................3rd 1.1Generalinformationoftestinginstitutions..................................................3rd 1.2ApplicantandManufacturer.........................................................................3rd 1.3Testingprinciple..........................................................................................3rd 1.4Testequipment.............................................................................................4th 1.5Testenvironment..........................................................................................4th 1.6Statement.......................................................................................................4th 2.SampleInformation..................................................................................................5th 2.1DescriptionofEUT(S).....................................................................................5th 2.2EUTappearance.............................................................................................6th AntennaDimensions........................................................................................6th 2.3EUTsetupphotooffreespaceOTAtesting........................................................7th 3.TestResults............................................................................................................8th 3.1Testuncertainty...............................................................................................8th 3.2Testdata........................................................................................................9th 3.2.1VSWRparameters..................................................................................9th 3.2.2VSWRdata............................................................................................9th 3.2.3Typicalfreespaceefficiencyandgain....................................................10th 3.2.4Radiationpattern.................................................................................11th VersionNo.DateDescription 00 June24,2026 Original Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua ReportNo.:XH20260624002 Page3rdof12 1.GeneralInformation 1.1Generalinformationoftestinginstitutions Name ShenzhenXinHuaTechnologyco.,Ltd Address Room617,No.15,ShajiangEastRoad,SonggangCommunity,Songgang Street,Bao'anDistrict,Shenzhen 1.2ApplicantandManufacturer Applicant/ClientName FIRSTECH,LLC ApplicantAddress 2190368THAVESKENT,WA98032UnitedStatesofAmerica 1.3Testingprinciple Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua Xinhua ReportNo.:XH20260624002 Page4thof12 1.4Testequipment EquipmentModelNo.SerialNo.Manufacturer Calibration date Next calibration date OTATest System RayZone-5000 A0011 GTS2026.01.192027.01.18 Network Analyzer E5071CC0017KEYSIGHT2026.01.192027.01.18 1.5Testenvironment Temperature 24.8°C Humidity 83%RH Pressure 100.06kPa 1.6Statement (1)Thetestresultsinthereportareonlyapplicabletothetestedsamplesandthetested samplesworkundertheenvironmentdescribedinthereport. (2)OnlyShenzhenXinHuaTechnologyco.,Ltdhavetherighttomodifythereport,andthe modificationinformationsha…

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Appendix A Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT 2.4GHz 2480 Ant1 51.02 2.92 1.13 2 / 14 Duty Cycle NVNT BLE 1M 2480MHz Ant1 3 / 14 Maximum Peak Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Conducted Power (W) Antenna Gain (dBi) E.I.R.P. (dBm) Limit Conducted(dBm) Verdict NVNT 2.4GHz 2480 Ant1 -6.03 0.00025 -0.52 -6.55 30 Pass 4 / 14 Peak Power NVNT BLE 1M 2480MHz Ant1 5 / 14 -6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT 2.4GHz 2480 Ant1 0.6203 0.5 Pass 6 / 14 -6dB Bandwidth NVNT BLE 1M 2480MHz Ant1 7 / 14 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT 2.4GHz 2480 Ant1 2.0969 8 / 14 OBW NVNT BLE 1M 2480MHz Ant1 9 / 14 Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Antenna Conducted PSD (dBm/3kHz) Duty Factor (dB) Total PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT 2.4GHz 2480 Ant1 -7.85 2.92 -4.93 8 Pass 10 / 14 PSD NVNT BLE 1M 2480MHz Ant1 11 / 14 Band Edge Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2480 Ant1 -38.38 -20 Pass 12 / 14 Band Edge NVNT BLE 1M 2480MHz Ant1 Ref Band Edge NVNT BLE 1M 2480MHz Ant1 Emission 13 / 14 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2480 Ant1 -30.41 -20 Pass 14 / 14 Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Emission

TRF No.: 04-E001-0B TRF Originator: GTG TRF Date: 2023-12-13 Web: www.gtggroup.com E-mail: [email protected] Tel.: 86-400 755 8988 CFR 47 FCC PART 15 SUBPART C RSS-247 Issue 4 TEST REPORT For Boiler MODEL NUMBER: OM-Heater-650 REPORT NUMBER: E04A26051159F00301 ISSUE DATE: July 06, 2026 FCC ID: 2BAF6-HEATER650 IC: 35423-HEATER650 Prepared for FCC: Firstech,LLC 21903 68th Ave. South, Kent, Washington, United States, 98032 IC: Compustar Canada Audio & Security Inc. 30 - 3903 Arthur Rose, Saskatoon, SK S7P 0C8, Canada Prepared by Guangdong Global Testing Technology Co., Ltd. Room 101-105, 203-210, Building 1, No.2, Keji 8 Road, Songshan Lake Park, Dongguan city, Guangdong, People’s Republic of China, 523808 This report is based on a single evaluation of the submitted sample(s) of the above mentioned product, it does not imply an assessment of the production of the products. This report shall not be reproduced, except in full, without the written approval of Guangdong Global Testing Technology Co., Ltd. REPORT NO.: E04A26051159F00301 Page 2 of 35 TRF No.: 04-E001-0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 July 06, 2026 Initial Issue REPORT NO.: E04A26051159F00301 Page 3 of 35 TRF No.: 04-E001-0B Global Testing , Great Quality. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC Part 15.203/15.247 (c) RSS-GEN Clause 6.8 Pass AC Power Line Conducted Emission ANSI C63.10-2020, Clause 6.2 FCC Part 15.207 RSS-GEN Clause 8.8 Pass Conducted Output Power ANSI C63.10-2020, Clause 11.9.1.2 FCC Part 15.247 (b)(3) RSS-247 Clause 6.3.2 Pass 6dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2020, Clause 11.8.1 or 11.8.2 FCC Part 15.247 (a)(2) RSS-247 Clause 6.3.1(a) ISED RSS-Gen Clause 6.7 Pass Power Spectral Density ANSI C63.10-2020, Clause 11.10.2 FCC Part 15.247 (e) RSS-247 Clause 6.3.1(b) Pass Conducted Band edge and spurious emission ANSI C63.10-2020, Clause 11.11 FCC Part 15.247(d) RSS-247 Clause 6.6 Pass Radiated Band edge and Spurious Emission ANSI C63.10-2020, Clause 11.12 FCC Part 15.247(d) FCC Part 15.205/15.209 RSS-247 Clause 6.6 RSS-GEN Clause 8.9 Pass Duty Cycle ANSI C63.10-2020, Clause 11.6 None; for reporting purposes only. Pass Note: 1. For ISED, this report is also performed according to ANSI C63.10-2020 + Cor.1-2023 + C63.10a-2024 + Errata to C63.10a-2024 standards. *This test report is only published to and used by the applicant, and it is not for evidence purpose in China. *The measurement result for the sample received is <Pass> according to < CFR 47 FCC PART 15 SUBPART C, ISED RSS-247 Issue 4> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A26051159F00301 Page 4 of 35 TRF No.: 04-E001-0B Global Testing , Great Quality. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 5 2. TEST METHODOLOGY ......................................................................................................... 6 3. FACILITIES AND ACCREDITATION ..................................................................................... 6 4. CALIBRATION AND UNCERTAINTY ................................................................................... 7 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 7 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 7 5. EQUIPMENT UNDER TEST .................................................................................................. 8 5.1. DESCRIPTION OF EUT ........................................................................................... 8 5.2. CHANNEL LIST ........................................................................................................ 8 5.3. MAXIMUM CONDUCTED OUTPUT POWER ........................................................... 8 5.4. TEST CHANNEL CONFIGURATION ........................................................................ 8 5.5. THE WORSE CASE POWER SETTING PARAMETER ............................................ 8 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ........................................................... 9 5.7. SETUP DIAGRAM .................................................................................................... 9 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 10 7. ANTENNA PORT TEST RESULTS ..................................................................................... 12 7.1. Conducted Output Power ........................................................................................ 12 7.2. 6dB Bandwidth and 99% Occupied Bandwidth ....................................................... 13 7.3. Power Spectral Density ........................................................................................... 15 7.4. Conducted Band edge and spurious emission ........................................................ 16 7.5. Duty Cycle .............................................................................................................. 18 8. RADIATED TEST RESULTS ............................................................................................... 19 8.1. Radiated Band edge and Spurious Emission .......................................................... 25 9. ANTENNA REQUIREMENT ................................................................................................ 31 10. AC POWER LINE CONDUCTED EMISSION ......................................................... 33 REPORT NO.: E04A26051159F00301 Page 5 of 35 TRF No.: 04-E001-0B Global Testing , Great Quality. 1. ATTESTATION OF TEST RESULTS FCC Applicant Information Company Name: Firstech,LLC Address: 21903 68th Ave. South, Kent, Washington, United States, 98032 IC Applicant Information Company Name: Compustar Canada Audio & Security Inc. Address: 30 - 3903 Arthur Rose, Saskatoon, S…

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Radiated Band edge and Spurious Emission AC Power Line Conducted Emission RF conducted method