2A27UU251HFive-channel transmitter

Instruction Of Buttons Version: A/01 5-channel Emitter Instruction Lock status Unlock status Press and hold STOP button 15s LED flash twice LED flash once Note: 1,The factory default is unlock status, repeat same operation to switch status circulaly. 2、When the combination buttons are locked, if you press the combination buttons, the emitter won't send any signal and LED won't flash. 3、Only the transmitting code will be affected if the combination buttons are locked. Radio frequency: 433.92MHz Working temperature：-5°C~50°C Quiescent current: ≤1uA Working current≤20mA Radio range: 30 meters indoor Battery：3V (CR2430)Battery life: >2 years Technical specification 1, Emitter couldn't expose to moisture or be striked heavily, or else the emitter life will be affected; 2, If the emitter is not so sensitive or the radio range becomes shorter, pls check whether to change the battery; 3, If you press any button more than 20S, the emitter will stop sending radio signals; 4, It's forbidden to use different type battery to avoid any dangerous risk; 5, Dispose of used batteries properly. Warning DD251H DD251H 5-channel emitter DD251H Back LED Setting button (P2) UP DOWN Channel(+) (P1+) Channel(-) (P1-) STOP Combination Button Lock / Unlock Operation Caution: This device complies with Part 15 of the FCC. Operation is subject to thefollowing two conditions: (1) this device may not cause harmful interference; (2) this device must accept any interference received, includinginterference that may cause undesired operation. Any changes or modifications not expressly approved by the partyresponsible for compliance could void the user's authority tooperate theequipment. This equipment has been tested and found to comply with the limits for aClass B digital device, pursuant to part 15 of the FCC Rules.These limitsare designed to provide reasonable protection against harmful interferencein a residential installation. This equipmentgenerates uses and can radiate radio frequency energy and, if not installed and used in accordance withthe instructions, may causeharmful interference to radio communications. However, there is no guarantee that interference will not occur in aparticularinstallation. If this equipment does cause harmful interference toradio or television reception, which can be determined by turningtheequipment off and on, the user is encouraged to try to correct theinterference 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 towhich the receiver is connected. —Consult the dealer or an experienced radio/TV technician for help.

External Photos Documentation Applicant: Markisol USA Inc Page 1 of 3 Product: Five-channel transmitter FCC ID: 2A27U251H External Photos Documentation Applicant: Markisol USA Inc Page 2 of 3 Product: Five-channel transmitter FCC ID: 2A27U251H External Photos Documentation Applicant: Markisol USA Inc Page 3 of 3 Product: Five-channel transmitter FCC ID: 2A27U251H

Label & Location Label

Internal Photos Documentation Applicant: Markisol USA Inc Page 1 of 2 Product: Five-channel transmitter FCC ID: 2A27U251H Internal Photos Documentation Applicant: Markisol USA Inc Page 2 of 2 Product: Five-channel transmitter FCC ID: 2A27U251H Antenna for 433.92MHz

Report No: 709502301626-00B EMC_SHA_F_R_02.06E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 1 of 2 Rev. 171.00 RF Exposure Estimation 1. Introduction Applicant: Markisol USA Inc Address: 700 Pinnacle Ct Suite 170 Norcross GEORGIA 30071 USA Product: Five-channel transmitter FCC ID: 2A27U251H Model No.: DD251H Reference RF report # 709502301626-00A 2. B.2 Blanket 1 mW Blanket Exemption The 1 mW Blanket Exemption of § 1.1307(b)(3)(i)(A) applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power of no more than 1 mW, regardless of separation distance. The 1 mW blanket exemption applies at separation distances less than 0.5 cm, including where there is no separation. This exemption shall not be used in conjunction with other exemption criteria other than those for multiple RF sources in paragraph § 1.1307(b)(3)(ii)(A). The 1 mW exemption is independent of service type and covers the full range of 100 kHz to 100 GHz, but it shall not be used in conjunction with other exemption criteria or in devices with higher-power transmitters operating in the same time-averaging period. Exposure from such higher-power transmitters would invalidate the underlying assumption that exposure from the lower-power transmitter is the only contributor to SAR in the relevant volume of tissue. 3. RF Exposure Evaluation Per the test report included herein, for 433.92MHz According to C63.10 Annex G EIRP = pt × gt =( E × d) 2 /30, so pt=( E × d) 2 /30* gt where pt is the transmitter output power in watts gt is the numeric gain of the transmitting antenna (dimensionless) E is the electric field strength in V/m d is the measurement distance in meters (m) transmitter output power for 433.92MHz Function Field strength (E): 88.03 (dBuV/m) = 0.0252 (V/m) Measurement distance (D): 3 (m) Antenna Gain, typical (dBi): -3 Numerical gain of the transmit antenna (gt): 0.50 Transmitter output power (TP): 0.000380(W) Transmitter output power (TP): 0.380(mW) Report No: 709502301626-00B EMC_SHA_F_R_02.06E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 2 of 2 Rev. 171.00 We used the maximum ERP/EIRP to perform RF exposure exemption evaluation. Evaluation method Exempt Limit (mW) Verdict ◼ Blanket 1 mW Blanket Exemption 1mW Yes  MPE-based Exemption (ERP) 7mW (ERP) N/A  SAR-based Exemption (Pth) 3060mW N/A So, the device is qualified for SAR test exemption, the exemption report is in lieu of the SAR report. - TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch Reviewed by: Prepared by: Tested by: _____________________ _____________________ ______________________ Hui TONG Jiaxi XU Cheng Huali EMC Section Manager EMC Project Engineer EMC Test Engineer Date: April 17, 2023 Date: April 17, 2023 Date: April 17, 2023 -------------------------------------------------------End of Test Report--------------------------------------------------------------------

Markisol USA Inc Antenna Information To whom it may concern, Product name: Five-channel transmitter Model: DD251H FCC ID: 2A27U251H The applicable FCC rule part of this product is § 15.231, radiated measurements are used to show compliance with FCC limits for fundamental and spurious emissions. The Antenna information as below for your reference. Antenna photo: Antenna transmission frequency: 433.92MHz Antenna type: PCB antenna Antenna Gain: -3 dBi Yours sincerely. Anton Persson Company Officer: Markisol USA Inc Telephone Number: (4) 673-3598 764 Email: [email protected] Antenna Length:30mm±2mm

Report Number: 709502301626-00A EMC_SHA_F_R_02.05E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 1 of 16 Rev. 171.00 FCC TEST REPORT Report Number : 709502301626-00A Date of Issue: April 17, 2023 Model : DD251H Product Type : Five-channel transmitter Applicant : Markisol USA Inc Address : 700 Pinnacle Ct Suite 170 Norcross GEORGIA 30071 USA Production Facility : Ningbo Dooya Mechanic & Electronic Technology Co., Ltd. Address : No.168 Shengguang Road,Luotuo,Zhenhai 315202 Ningbo, Province, P.R. China. Test Result : ◼ Positive  Negative Total pages including Appendices : 16 TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch is a subcontractor to TÜV SÜD Product Service GmbH according to the principles outlined in ISO 17025. TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch reports apply only to the specific samples tested under stated test conditions. Construction of the actual test samples has been documented. It is the manufacturer's responsibility to assure that additional production units of this model are manufactured with identical electrical and mechanical components. The manufacturer/importer is responsible to the Competent Authorities in Europe for any modifications made to the production units which result in non-compliance to the relevant regulations. TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch shall have no liability for any deductions, inferences or generalizations drawn by the client or others from TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch issued reports. This report is the confidential property of the client. As a mutual protection to our clients, the public and ourselves, extracts from the test report shall not be reproduced except in full without our written approval. dc Report Number: 709502301626-00A EMC_SHA_F_R_02.05E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 2 of 16 Rev. 171.00 1 Table of Contents 1 Table of Contents ........................................................................................................................................................... 2 2 Details about the Test Laboratory.................................................................................................................................... 3 3 Description of the Equipment Under Test ........................................................................................................................ 4 4 Summary of Test Standards ............................................................................................................................................ 5 5 Summary of Test Results ................................................................................................................................................ 6 6 General Remarks ............................................................................................................................................................ 7 7 Systems test configuration .............................................................................................................................................. 8 8 Test Setups ..................................................................................................................................................................... 9 9 Test Methodology......................................................................................................................................................... 10 9.1 Radiated Emission ................................................................................................................................................ 10 9.2 Bandwidth Measurement ...................................................................................................................................... 13 9.3 Deactivation Time ................................................................................................................................................ 14 10 Test Equipment List...................................................................................................................................................... 15 11 System Measurement Uncertainty ................................................................................................................................. 16 Report Number: 709502301626-00A EMC_SHA_F_R_02.05E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 3 of 16 Rev. 171.00 2 Details about the Test Laboratory Details about the Test Laboratory Test Site 1 Company name: TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch No.16 Lane, 1951 Du Hui Road, Shanghai 201108, P.R. China Test Firm FCC Registration Number: Designation number: 820234 CN1183 IC Company Number: CAB identifier: 25988 CN0101 Telephone: +86 21 6141 0123 Fax: +86 21 6140 8600 Report Number: 709502301626-00A EMC_SHA_F_R_02.05E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 4 of 16 Rev. 171.00 3 Description of the Equipment Under Test Product: Five-channel transmitter Model no.: DD251H FCC ID: 2A27U251H Rating: DV 3V RF Transmission Frequency: 433.92MHz Modulation: FSK Antenna Type: PCB antenna Antenna Gain: -3.0dBi Description of the EUT: The Equipment Under Test (EUT) was a Five-channel transmitter, transmitter operated at 433. 92MHz. Test sample no.: SHA-716249-1 Report Number: 709502301626-00A EMC_SHA_F_R_02.05E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No…

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Applicant: Markisol USA Inc Product: Five-channel transmitter FCC ID: 2A27U251H ©2023 Not to be reproduced, except in its entirety, Page 1 of 1 without the Permission of TÜ V SÜ D Certification and Testing (China) Co., Ltd. Shanghai Branch PHOTOGRAPHS OF TEST SET UP Field Strength and Harmonics Test Setup Radiated Emission Setup 30MHz ~ 1GHz 1GHz ~ 4.5GHz