2AOTUKDH231BHandset

1 Wireless Handset User Manual 1. Performance parameter Model KDH231B Voltage 4.5VDC（3AAA 1.5V battery） Current MAX 50mA Keys 9 Protection class IP 42 Main material HIPS-2230 RF 2420Mhz Key 1: Short press button 1, and the fader will run to a fixed position (Book mode) to stop; long press button 1, after 3 seconds, the current position will be memorized (overwrite the previous memory), the backlight will flash 3 times quickly, and the control box will beep 2 1 time; After the position is memorized, short press button 3, and the fader will switch to the current memorized position; Key 2: Short press button 2, and the push rod will stop running to a fixed position (TV mode); long press button 2, after 3 seconds, the current position will be memorized (overwrite the previous memory), the backlight will flash 3 times quickly, and the control box will beep 1 time; After memorizing the position, short press button 2 to switch the fader to the current memorized position; Key 3: Long press button 3, push rod 1 extends, release it to stop; Key 4: Long press button 4, push rod 2 extends, release it to stop; Key 5: Long press button 5, push rod 1 retracts, release it to stop; Key 6: Short press button 6, the push rod 1 and push rod 2 retract at the same time; press any key to stop the push rod during the operation of the push rod; Key 7: Long press button 7, the push rod 2 retracts, release it to stop; Key 8: long press button 8 for about 3 seconds, the backlight flashes for 3 seconds and then stays on, the control box will memorize the current push rod position (overwrite the previous memory); at the same time the buzzer buzzes once, the backlight is off; short press again Press the 8 key, the push rod moves to the memory position; Key 9: Short press button 9 to stop the push rod running to a fixed position (zero gravity mode); long press button 9 for 3 seconds, the current position is memorized (overwrite the previous memory), and the backlight flashes 3 times quickly, the control box bee Beep once; after the position is memorized, short press button 9 to switch the fader to the current memorized position. 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 warning: Any Changes or modifications not expressly approved by the party responsible for compliance 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 B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable 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 3 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 the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. The device has been evaluated to meet general RF exposure requirement. T he device can be used in portable exposure condition without restriction.

(Changzhou Kaidi Electrical Inc.) Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AOTUKDH231B Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Block Diagram, Schematics, Operational Description Block Diagram.pdf, Schematics.pdf, Operational Description.pdf 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. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Internal Photos, External Photos, Test Setup Photos, Manual Internal Photos.pdf, Test Setup Photos.pdf, Manual.pdf, External Photos.pdf Sincerely, Qin Yin/Manager Changzhou Kaidi Electrical Inc.

(Changzhou Kaidi Electrical Inc.) Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: February 20, 2021 SUBJECT: FCC Application for FCC ID: 2AOTUKDH231B To Whom It May Concern: We, the undersigned, hereby authorize Tony Wei at EMTEK(NINGBO) CO., LTD. on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by EMTEK(NINGBO) CO., LTD. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, Qin Yin/Manager Changzhou Kaidi Electrical Inc.

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Report No.ES210204022W Page 1 of 26 Ver.1.0 TEST REPORT Product Name : Handset Model Number : KDH231B FCC ID : 2AOTUKDH231B $二维码$ Prepared for : Changzhou Kaidi Electrical Inc. Address : JiangCun, Henglin Town, Changzhou, China Prepared by : EMTEK (SHENZHEN) CO., LTD. Address : Building 69, Majialong Industry Zone, Nanshan District, Shenzhen, Guangdong, China Tel: (0755) 26954280 Fax: (0755) 26954282 Report Number : ES210204022W Date(s) of Tests : February 04, 2021 to February 23, 2021 Date of Issue : February 24, 2021 Report No.ES210204022W Page 2 of 26 Ver.1.0 Table of Contents 1 TEST RESULT CERTIFICATION .............................................................................................................. 3 2 EUT TECHNICAL DESCRIPTION ............................................................................................................ 5 3 SUMMARY OF TEST RESULT ................................................................................................................. 6 4 TEST METHODOLOGY ............................................................................................................................ 7 4.1 GENERAL DESCRIPTION OF APPLIED STANDARDS ........................................................................ 7 4.2 MEASUREMENT EQUIPMENT USED .................................................................................................. 7 4.3 DESCRIPTION OF TEST MODES ......................................................................................................... 8 4.4 TEST SOFTWARE ................................................................................................................................. 8 5 FACILITIES AND ACCREDITATIONS ...................................................................................................... 9 5.1 FACILITIES ............................................................................................................................................ 9 5.2 LABORATORY ACCREDITATIONS AND LISTINGS ............................................................................. 9 6 TEST SYSTEM UNCERTAINTY ............................................................................................................. 10 7 SETUP OF EQUIPMENT UNDER TEST ................................................................................................ 11 7.1 RADIO FREQUENCY TEST SETUP 1 ................................................................................................. 11 7.2 RADIO FREQUENCY TEST SETUP 2 ................................................................................................. 11 7.3 CONDUCTED EMISSION TEST SETUP ............................................................................................. 13 7.4 SUPPORT EQUIPMENT ..................................................................................................................... 13 8 TEST REQUIREMENTS ......................................................................................................................... 14 8.1 BANDWIDTH TEST ............................................................................................................................. 14 8.2 RADIATED SPURIOUS EMISSION ..................................................................................................... 16 8.3 CONDUCTED EMISSIONS TEST ....................................................................................................... 24 8.4 ANTENNA APPLICATION .................................................................................................................... 25 Report No.ES210204022W Page 3 of 26 Ver.1.0 1 TEST RESULT CERTIFICATION Applicant : Changzhou Kaidi Electrical Inc. Address : JiangCun, Henglin Town, Changzhou, China Manufacturer : Changzhou Kaidi Electrical Inc. Address : JiangCun, Henglin Town, Changzhou, China EUT : Handset Model Name : KDH231B Trademark : N/A Measurement Procedure Used: APPLICABLE STANDARDS STANDARD TEST RESULT FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C PASS The above equipment was tested by EMTEK(SHENZHEN) CO., LTD. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10 (2014) and the energy emitted by the sample EUT tested as described in this report is in compliance with the requirements of FCC Rules Part 2 and Part 15.249 The test results of this report relate only to the tested sample identified in this report. Date of Test : February 04, 2021 to February 23, 2021 Prepared by : Qiang Wang/Editor Reviewer : Sewen Guo/Supervisor Approve & Authorized Signer : Lisa Wang/Manager Report No.ES210204022W Page 4 of 26 Ver.1.0 Modified History Version Report No. Revision Date Summary Ver.1.0 ES210204022W / Original Report Report No.ES210204022W Page 5 of 26 Ver.1.0 2 EUT TECHNICAL DESCRIPTION Product: Handset Model Number: KDH231B Sample Number: 1# Power Supply: DC 4.5V for Battery Modulation: GFSK Frequency Range: 2420MHz Max Transmit Power: 93.54 dBuV/m Antenna: PCB Antenna Antenna Gain: 1.0 dBi Temperature Range: -5°C ~ 40°C Received of Date: February 04, 2021 Note: for more details, please refer to the user’s manual of the EUT. Report No.ES210204022W Page 6 of 26 Ver.1.0 3 SUMMARY OF TEST RESULT FCC Part Clause Test Parameter Verdict Remark 15.207 Conducted Emission N/A 15.209 Radiated Emission PASS 15.249 Radiated Spurious Emission PASS 15.249 Band edge test PASS 15.249 20dB Bandwidth PASS 15.203 Antenna Requirement PASS NOTE1: N/A is an abbreviation for not applicable NOTE2: The report use radiated measurements in the restricted frequency bands. In addition, the radiated test is also performed to ensure the emissions emanating from the device cabinet also comply with the applicable limits. RELATED SUBMITTAL(S) / GRANT(S): This submittal(s) (test report) is intended for FCC ID: 2AOTUKDH231B filing to comply with Section 15.249 of …

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