2AYDXSCRA1Symphony Classroom Remote Control

ShenZhen C&D Electronics CO.Ltd. Add: Tel: 86-755- 28142422 Fax: 86-755-28142699 E-mail: [email protected] User manual (Ver 1.0) Seller approval Customer approval Prepared By: James Date: 2020.9.25 Received by: Date： Checked By: Beiji Li Date: 2020.9.25 Checked by: Date: Approved By: Date: Approved by: Date: company chop： company chop： Change history Version Date Description Author Ver1.0 2020.9.25 Preliminary James 9/F,Tower9A, Baoneng Science&Technology Park, Qinghu Industrial Park,Qingxiang Road,Longhua Street,Longhua New District,Shenzhen City,Guangdong Province,P.R.China 2.Index NO. 描述appellation 1 Approval Sheet Cover 2 Index 3 Product Cosmetics drawing 4 Main functions 5 spec and electric feature 6 Code table 7 RF Performance 8 MIC Performance 产品认证 Product certification No. Item Spec 1 FCC/IC FCC 15B (US & Canada, other market regions TBC) 2 BQB Bluetooth BQB 3 RoHS RoHS compliant parts & materials 4 CE 5 3.Product cosmetics drawing Remark: The wrist straps and logo badge are provided by Customer. 4.Mainfunctions RF427A (SCRA1) Compliant with Bluetooth low protocol stack (V4.2) ‐Bluetooth module should be built‐in and be compatible with Android9. 4.1 Voice function Press and hold the Microphone button to talk. Voice function stops after Microphone button is released. 4.2 Gyroscope & Accelerometer Sensor 6-axis motion tracking device with 3-axis gyroscope and 3-axis accelerometer. Air mouse cursor should not drift when the RCU is stable on the table. -Digital-output X-, Y-, and Z-Axis angular rate sensors (gyroscopes) with full-scale range of ±1000°/sec -Digital-output triple-axis accelerometer with a programmable full scale range of ±2g 4.3 Environmental Operating Temperature 0°C to 45°C (32°F to 113°F) Storage Temperature -15°C to 55°C (-5°F to 131°F) Operating Humidity 20% to 80% non-condensing humidity Storage Humidity 20% to 90% non-condensing humidity 4.4 Certification & Compliances FCC / IC FCC 15B (US & Canada, other market regions TBC) CE BLE Support Compliant with Bluetooth low protocol stack (V4.2) RoHS RoHS compliant parts & materials Bluetooth BQB Bluetooth certification (TBC) 4.5 LED Indicator Mode 1. Microphone listening: Green led on and solid 2. BT pairing: Blue led on and flashing 3. Other keypresses: LED off. 4.6 BLE Supported Remote controller is compliant with Bluetooth low protocol stack (V4.2). 4.7 Pairing Mode Power ON → Press Home + back key to enter pairing mode.(LED behavior 0.5sec on,1.5 sec off) 4.8 Pairing Clear Mode Press Home + back key on pairing mode the RCU will to do pairing clear function..(LED behavior 0.3 sec on,0.3 sec off) 4.9 OTA STB will trigger firmware update on connected remote controller if it is not running on latest firmware . However, unless special circumstances do not occur, there is no plans to execute. 4.10 Battery reports The remote controller reports the estimated voltage level ,only when inquired by host. 5. Spec and electric feature Type Bluetooth Voice Remote Control with Air Mouse function Frequency 2402 ~ 2480 MHz Distance > 10 meters Power AA battery x2. Battery usage life: 1 year (100 times/day, 0.5s/time) Current Working: <15mA, Standby: < 20uA Voice Input button Hold to Talk Microphone build-in Digital MEMS microphone, 16 KHz sampling rate Air Mouse function Support mouse functions Sensor 6 axis Gyroscope & Accelerometer Size ~ 157.5 x 41 x 22 mm Weight 65g (including batteries) Color/Material/Finish Pantone Cool Gray 1C, Texture NP1055-2B. See Merlyn RCU CMF document Number of keys 19 OS Software support LED HID device, Air Mouse, Voice Microphone. Android 9 driver support. LED flashing under Bluetooth pairing mode Low battery reminder Communicate to main unit Buzzer built-in Support buzzer and MIDI music 6. Button function 6.1Button Keycodes and Click Behaviors 7. RF Performance 7-1 Basic Rate Item Min. Typ. Max. Bluetooth Spec Unit Output power P AV (1) -12 -8 -5 -20 to 10 dBm Leakage Power Avg (1) -100 -65 100 < 100 dBm Output power P PK (1) － 4.5 23 < 23 dBm Ppeak-PavgAvg (1) － 0.5 3 < 3 dBm Frequency range 2402 － 2480 2402 to 2480 MHz Frequency Accuracy Avg (1) -150 8 150 <±150 kHz Frequency Offset Avg (1) -150 11 150 <±150 kHz Frequency Drift Avg (1) -50 3 50 <±50 kHz Initial Frequency Drift Avg (1) -20 -0.1 20 <±20 kHz Max Drift Rate Avg (1) -20 3 20 <±20 kHz Avg Frequency Deviation Avg (1) 185 225 275 185 to 275 kHz Min Frequency Deviation Avg (1) 185 210 275 185 to 275 kHz Max Frequency Deviation Avg (1) -1000 240 1000 -1000 to 1000 kHz Delta F1 Avg (2) 225 250 275 225 to 275 kHz Delta F2 Avg / Delta F1 Avg (2) 0.8 － － > 0.8 － Delta F2 Max Threshold: 185.0 kHz (2) 99.9 － － > 99.9 % Note： (1) Payload: 10101010, Length: 37 Bytes (2) Payload: 11110000 & 10101010, Length: 37 Bytes 7-2 Basic Rate Item Min. Typ. Max. Bluetooth Spec Unit Sensitivity at 30.8% PER (1) (2) – -80 -70 ≤ -70 dBm Maximum received signal at 30.8% PER (1) (2) -20 -10 – ≥ -20 dBm Note： (1) Packets: 1500, Payload: PRBS 9, Length: 37 Bytes (2) Measured at F 0 = 2442MHz. 8. MIC Performance - Digital MEMS microphone - Audio CODEC output: 16KHz, 16bit - Ensure wind noise is minimize while talking into the remote - Isolate as much as possible from the enclosure to minimize enclosure vibrations fromaffecting microphone performance. - Question : Is there a guideline for proximity of microphone to LED in terms of minimizing LED related EMI noise (if a concern) ? IC Warning This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) This device may not cause interference, and (2) This device must accept any interference, including interference that may cause undesired operation of the device. Le présent appareil est conforme aux CNR d'Industrie 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, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radi…

Text truncated - open the document above for the full version.

Merlyn Mind, Inc. TCBJ FORM-4 Issued by: TCB Administrator Revision 6 12/06/10 2021.02.23 MET Laboratories, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, Merlyn Mind, Inc. hereby authorize (Shenzhen STS Test Services Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature Name: Max Tsou

Merlyn Mind, Inc. TCBJ FORM-4 Issued by: TCB Administrator Revision 6 12/06/10 2021.02.23 MET Laboratories, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Symphony Classroom Remote Control / SCRA1 /FCC ID: 2AYDXSCRA1) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the • Schematics • Block diagram • Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. required to be submitted with this application be permanently withheld from public review. Please contact me if there is any information you may need. Sincerely, Name: Max Tsou Signature:

Page 1 of 3 Report No.: STS2011361 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: SCRA1 Photo 1 Photo 2 Page 2 of 3 Report No.: STS2011361 Photo 3 Photo 4 Page 3 of 3 Report No.: STS2011361 Photo 5 Photo 6

FCC Label silk screen Size: 40mm*30mm Symphony Classroom Remote Control Model name: SCRA1 FCC ID: 2AYDXSCRA1 IC: 26781-SCRA1 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.

Page 1 of 3 Report No.: STS2011361 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: SCRA1 Photo 1 Photo 2 BT Antenna Page 2 of 3 Report No.: STS2011361 Photo 3 Photo 4 Page 3 of 3 Report No.: STS2011361 Photo 5 Photo 6

FCC ID: 2AYDXSCRA1 RF EXPOSURE EVALUATION METHOD SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR,where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. FCC ID: 2AYDXSCRA1 Maximum measured transmitter power. BLE The Worst Case Mode 2402-2480MHz Detector AVG GFSK -3.5±1dBm Remark: The worst case gain of the antenna is 1dBi. 1dBi logarithmic terms convert to numeric result is nearly 1.259 GFSK2.402-2.91-2.5 0.5623413250.1743 3 Result Limit Test mode frequency (GHz) Maximum AVG Conducted Output Power (dBm) Tune up Power (dBm) Tune up Power (mW) Threshold at which no SAR required is 0.1743≤ 3.0 for 1-g SAR, Separation distance is 5mm.

Any reproduction of this document must be done in full. No single part of this document may be reproduced without permission from STS, all test data presented in this report is only applicable to presented test sample. Shenzhen STS Test Services Co., Ltd. A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China TEL: +86-755 3688 6288 FAX: +86-755 3688 6277 E-mail:[email protected] RADIO TEST REPORT Report No.:STS2011361W02 Issued for Merlyn Mind, Inc. 405 Lexington Avenue, Suite 3504 New York, NY 10174, USA Product Name: Symphony Classroom Remote Control Brand Name: Symphony Classroom Model Name: SCRA1 Series Model: N/A FCC ID: 2AYDXSCRA1 IC： 26781-SCRA1 Test Standard: FCC Part 15.247 RSS-247 Issue 2, February 2017 RSS-Gen Issue 5 ,March 2019 S T L A B S Page 2 of 49 Report No.: STS2011361W02 TEST RESULT CERTIFICATION Applicant’s Name ..................: Merlyn Mind, Inc. Address ..................................: 405 Lexington Avenue, Suite 3504 New York, NY 10174, USA Manufacturer's Name ...........: Shenzhen C&D Electronics Co.,Ltd Address ..................................: 9/F,Tower 9A, Baoneng Science&Technology Park, Qinghu Industrial Park,Qingxiang Road,Longhua Street ,Longhua New District, Shenzhen City, Guangdong Province ,P.R.China Product Description Product Name .........................: Symphony Classroom Remote Control Brand Name ..........................: Symphony Classroom Model Name ...........................: SCRA1 Series Model ...........................: N/A Test Standards ......................: FCC Part15.247 Test Procedure .......................: ANSI C63.10-2013 RSS-247 Issue 2, February 2017 RSS-Gen Issue 5 ,March 2019 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC/IC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of STS, this document may be altered or revised by STS, personal only, and shall be noted in the revision of the document. Date of Test ............................................ : Date of receipt of test item ...................... : 26 Nov. 2020 Date (s) of performance of tests ............. : 26 Nov. 2020 ~ 07 Dec. 2020 Date of Issue ........................................... : 07 Dec. 2020 Test Result ............................................... : Pass Testing Engineer : (Chris Chen) Technical Manager : (Sean she) Authorized Signatory : (Vita Li) Page 3 of 49 Report No.: STS2011361W02 Table of Contents 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.4 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 10 2.5 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 11 2.6 EQUIPMENTS LIST 12 3. EMC EMISSION TEST 14 3.1 CONDUCTED EMISSION MEASUREMENT 14 3.2 TEST PROCEDURE 15 3.3 TEST SETUP 15 3.4 EUT OPERATING CONDITIONS 15 3.5 TEST RESULTS 16 4. RADIATED EMISSION MEASUREMENT 17 4.1 RADIATED EMISSION LIMITS 17 4.2 TEST PROCEDURE 20 4.3 TEST SETUP 21 4.4 EUT OPERATING CONDITIONS 21 4.5 FIELD STRENGTH CALCULATION 22 4.6 TEST RESULTS 23 5. CONDUCTED SPURIOUS & BAND EDGE EMISSION 30 5.1 LIMIT 30 5.2 TEST PROCEDURE 30 5.3 TEST SETUP 30 5.4 EUT OPERATION CONDITIONS 30 5.5 TEST RESULTS 31 6. POWER SPECTRAL DENSITY TEST 35 6.1 LIMIT 35 6.2 TEST PROCEDURE 35 6.3 TEST SETUP 35 6.4 EUT OPERATION CONDITIONS 35 Page 4 of 49 Report No.: STS2011361W02 Table of Contents 6.5 TEST RESULTS 36 7. BANDWIDTH TEST 38 7.1 LIMIT 38 7.2 TEST PROCEDURE 38 7.3 TEST SETUP 38 7.4 EUT OPERATION CONDITIONS 38 7.5 TEST RESULTS 39 8. PEAK OUTPUT POWER TEST 43 8.1 LIMIT 43 8.2 TEST PROCEDURE 43 8.3 TEST SETUP 44 8.4 EUT OPERATION CONDITIONS 44 8.5 TEST RESULTS 45 9. ANTENNA REQUIREMENT 47 9.1 STANDARD REQUIREMENT 47 9.2 EUT ANTENNA 47 10. FREQUENCY STABILITY 48 10.1 LIMITS OF FREQUENCY STABILITY MEASUREMENT 48 10.2 TEST PROCEDURE 48 10.3 TEST RESULT 48 11 EUT TEST PHOTO 49 Page 5 of 49 Report No.: STS2011361W02 Revision History Rev. Issue Date Report NO. Effect Page Contents 00 07 Dec. 2020 STS2011361W02 ALL Initial Issue Page 6 of 49 Report No.: STS2011361W02 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C RSS-247 Issue 2 Standard Section Test Item Judgment Remark 15.207 RSS-Gen 8.8 Conducted Emission N/A -- 15.247 (a)(2) RSS-Gen 6.7 RSS-247 5.2 (a) 6dB&99% Bandwidth PASS -- 15.247 (b)(3) RSS-247 5.4 (d) Output Power PASS -- 15.247 (c) RSS-Gen 8.9/8.10 Radiated Spurious Emission PASS -- 15.247 (d) RSS-247 5.5 RSS-Gen 8.9/8.10 Conducted Spurious & Band Edge Emission PASS -- 15.247 (e) RSS-247 5.2 (b) Power Spectral Density PASS -- 15.205 RSS-Gen 8.9/8.10 Restricted bands of operation PASS -- Part 15.247(d)/part 15.209(a) RSS-247 5.5 RSS-Gen 8.9/8.10 Band Edge Emission PASS -- 15.203 RSS-Gen 6.8 Antenna Requirement PASS -- RSS-Gen 6.11/8.11 Frequency Stability PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2013. Page 7 of 49 Report No.: STS2011361W02 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.68dB 2 Unwanted Emissions, conducted ±2.9…

Text truncated - open the document above for the full version.

Page 1 of 1 FCC ID:2AYDXSCRA1 IC: 26781-SCRA1 DTS Setup photo Model name: SCRA1 DTS radiation L DTS radiation H