BY4-DAS24202.4G Digital Audio Sender

DAS-2420 2.4 GHz Wireless Digital Audio Sender with Portable Receiver Introduction In the scenario, when you want to watch your favorite action movie at night, and all your family members were sleep, you do not want to wake them up at this time, The DAS-2420 is the best solution. DAS-2420 deploy the 2.4GHz ISM band with frequency hopping and WiFi auto-detection scheme to provide crystal clear audio. Feature z 2.4GHz ISM band z ID Pairing z 34 channels Frequency hopping z 1Æ1, 1ÆN Application z Portable receiver with batteries powering and DC adaptor powering z Frequency hopping to avoid co-channel interference z Volume controllable via rotatable switch z 44.1KHz sampling frequency Package of content Before your installation, please check the content of package z DAS-2420 Tx X1 z DAS-2420 Rx X1 z AC/DC Adaptor X2 z 3.5 mm to RCA R/L audio cable X1 z Stereo 3.5mm Cabel z Earphone X1 1 Transmitter Receiver Stereo 3.5 Cable Audio cable Adaptor strap earphone Connectors and control 2 Power Switch Audio Pairing Switch DC Power input Volume LED Lamp Power Switch LED Lamp Volume DC Power Audio Pairing Switch Receiver Transmitter CAUTION Federal Communication Commission Interference Statement 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 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 of the following measures: z Reorient or relocate the receiving antenna. z Increase the separation between the equipment and receiver. z Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. z Consult the dealer or an experienced radio/TV technician for help. FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. 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. CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS 3 Installation Illustration Before your operation, please read this manual carefully and keep this for further reference. Application 1: Listen to the TV sound without turn the volume of TV loudly. In this scenario, the Tx unit should be located around the TV set Tx installation Step1: Take out the main unit Step2: Take a 3.5mmÆAudio RL cable, connect the 3.5mm connector to the 3.5mm socket on the Tx unit, another RL connector to the “Speaker out” or “line out” of your TV set Step3: Take out the AC/DC adaptor, plug the barrel end to the DC socket of DAS-2420, the AC blade end to your AC outlet, please be noted, DO NOT OVERLOAD YOUR AC OUTLET. Rx installation Via AA Batteries powering Step1: Take out the Rx unit Step2: open the batteries compartment Step3: Install 2 new AA batteries as figure shown (please make sure the polarity) Step4: Close the Batteries compartment 4 Batteries Close the compartment Finished DC jacket Speaker out/line out Via AC/DC Adaptor Step1: Take out the Rx unit Step2: Take out the AC/DC adaptor included Step3: Connect the DC barrel end to the DC socket of RX Step4: Connect the AC blade end to your AC outlet, please be noticed, DO NOT OVERLOAD YOUR AC Outlet Note: When you using AC/DC Adaptor, the power from batteries is cut. Strap for hanging Please take the strap and fasten it on the receiver unit like followed illustration picture. 5 DC jacket AC adaptor Volume Operation When All the connection are finished, you can start to use this wireless audio sender system as followed steps Step1: Power on the Tx (press the power switch on the Tx) Step2: Power on the Rx unit via sliding the Power key on the RX unit Step4: Turn the Volume of Rx to the lowest value Step5: Connect the earphone to the Audio socket on the RX unit Step6: You have finished all the setting , and you can listen to the TV sound now, and you can adjust the suitable volume for yourself. 6 Power Switch Power Switch EarphoneEarphoneSpeaker ADDING A NEW RX The DAS-2420 is designed to work with various Rxs, it can be configured to work with more than 16 Rxs (within the transmission distance). How to add a new Rx Step1: Power the Transmitter unit, press the power switch. Step2: Power on the Receiver unit, slide the power switch. Step3: Press Pairing key on the transmitter for 3 Secs. Transmitter will be under pairing mode, the LED on Tx will be blinking. Step4: Press the pairing key on receiver for 3 Secs, Tx and Rx are under pairing mode. The LED on Rx will be blinking. Step5: When the pairing procedure is ok, LED on Tx and Rx will dimmed at the same time, Pairing is OK. It will take 10 sec to do the pairing. FAQ No audio output 1. Check the power of Tx and Rx. 2. Check the audio connection on Tx and Rx. 3. Check the LED light on Tx, if there is audio presented, the LED will be lighted, if it is blinking that is means that there is no audio presented in Tx. There is some noise 1. Check the Tx and Rx are in the range of specification 2. Check if there are obstacles in the transmission range, such as microwave oven. Etc 3. press the pairing key once to check if there is interference again. 7 Power Switch Power Switch SAFETY NOTI…

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Report No.:120829E01 1 of 5 CONSTRUCTION PHOTOS OF EUT Report No.:120829E01 4 of 5 Report No.:120829E01 5 of 5

Report No.:120829E01 2 of 5 Report No.:120829E01 3 of 5

FCC ID: BY4-DAS2420 Report No.: RF120829E01 OPERATIONAL DESCRIPTION The transmitter of the EUT (2.4G Digital Audio Sender) is powered from 5Vdc AC adapter. The antenna is PIFA antenna without antenna connector. For more detailed instruction, please take a look at the user’s manual.

Report No.: SA120829E01 1 of 6 Report Format Version 5.0.0 Cancels and replaces the report No.: SA120522E09 dated Apr. 10, 2012 RF EXPOSURE REPORT REPORT NO.: SA120829E01 MODEL NO.: DAS-2420 FCC ID: BY4-DAS2420 RECEIVED: Aug. 29, 2012 TESTED: Oct. 25, 2012 ISSUED: Dec. 21, 2012 APPLICANT: Trans Electric Co., Ltd. ADDRESS: 771,Sec.2 Chungsan Rd, Huatang,Changhua, Taiwan. ISSUED BY: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Hsin Chu Laboratory LAB ADDRESS: No. 81-1, Lu Liao Keng, 9th Ling,Wu Lung Tsuen, Chiung Lin Hsiang, Hsin Chu Hsien 307, Taiwan, R.O.C. This report should not be used by the client to claim product certification, approval, or endorsement by any government agencies. This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification Report No.: SA120829E01 2 of 6 Report Format Version 5.0.0 Cancels and replaces the report No.: SA120522E09 dated Apr. 10, 2012 TABLE OF CONTENTS RELEASE CONTROL RECORD ..................................................................................... 3 1. CERTIFICATION ...................................................................................................... 4 2. RF EXPOSURE LIMIT .............................................................................................. 5 3. MPE CALCULATION FORMULA ............................................................................. 5 4. CLASSIFICATION .................................................................................................... 5 5. ANTENNA GAIN....................................................................................................... 5 6. CALCULATION RESULT OF MAXIMUM CONDUCTED POWER ........................... 6 Report No.: SA120829E01 3 of 6 Report Format Version 5.0.0 Cancels and replaces the report No.: SA120522E09 dated Apr. 10, 2012 RELEASE CONTROL RECORD ISSUE NO. REASON FOR CHANGE DATE ISSUED SA120829E01 Original release Dec. 21, 2012 Report No.: SA120829E01 4 of 6 Report Format Version 5.0.0 Cancels and replaces the report No.: SA120522E09 dated Apr. 10, 2012 1. CERTIFICATION PRODUCT: 2.4G Digital Audio Sender BRAND NAME: PX MODEL NO.: DAS-2420 TEST SAMPLE: ENGINEERING SAMPLE APPLICANT: Trans Electric Co., Ltd. TESTED DATE: Oct. 25, 2012 STANDARDS: FCC Part 2 (Section 2.1091) FCC OET Bulletin 65, Supplement C (01-01) IEEE C95.1 The above equipment (Model: DAS-2420) has been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample’s EMC characteristics under the conditions specified in this report. PREPARED BY : , DATE: Oct. 26, 2012 ( Lori Chung, Specialist ) APPROVED BY : , DATE: Oct. 26, 2012 ( May Chen, Deputy Manager ) Report No.: SA120829E01 5 of 6 Report Format Version 5.0.0 Cancels and replaces the report No.: SA120522E09 dated Apr. 10, 2012 2. RF EXPOSURE LIMIT LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) FREQUENCY RANGE (MHz) ELECTRIC FIELD STRENGTH (V/m) MAGNETIC FIELD STRENGTH (A/m) POWER DENSITY (mW/cm 2 ) AVERAGE TIME (minutes) LIMITS FOR GENERAL POPULATION / UNCONTROLLED EXPOSURE 300-1500 ... ... F/1500 30 1500-100,000 ... ... 1.0 30 F = Frequency in MHz 3. MPE CALCULATION 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 4. CLASSIFICATION The antenna of this product, under normal use condition, is at least 20cm away from the body of the user. So, this device is classified as Mobile Device. 5. ANTENNA GAIN Antenna Type Gain (dBi) (Include cable loss) Frequency range (MHz to MHz) PIFA 2.08 2400 ~ 2500 Report No.: SA120829E01 6 of 6 Report Format Version 5.0.0 Cancels and replaces the report No.: SA120522E09 dated Apr. 10, 2012 6. CALCULATION RESULT OF MAXIMUM CONDUCTED POWER FREQUENCY BAND (MHz) MAX POWER (mW) ANTENNA GAIN (dBi) DISTANCE (cm) POWER DENSITY (mW/ cm 2 ) LIMIT (mW/cm 2 ) 2406-2472 3.926 2.08 20 0.00126 1 --- END --- CONCLUSION: Both of the 2.4GHz and 5GHz WLAN can transmit simultaneously, the formula of calculated the MPE is: CPD 1 / LPD 1 + CPD 2 / LPD 2 + ......etc. < 1 CPD = Calculation power density LPD = Limit of power density Therefore, the worst-case situation is 0.19107 / 1 + 0.26777 / 1 = 0.45884, which is less than “1”. This confirmed that the device comply with FCC 1.1310 MPE limit.

Report No.: RF120829E01 1 of 47 Report Format Version 5.0.0 FCC TEST REPORT REPORT NO.: RF120829E01 MODEL NO.: DAS-2420 FCC ID: BY4-DAS2420 RECEIVED: Aug. 29, 2012 TESTED: Aug. 31 to Oct. 28, 2012 ISSUED: Dec. 21, 2012 APPLICANT: Trans Electric Co., Ltd. ADDRESS: 771,Sec.2 Chungsan Rd, Huatang,Changhua, Taiwan. ISSUED BY: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Hsin Chu Laboratory LAB ADDRESS: No. 81-1, Lu Liao Keng, 9th Ling,Wu Lung Tsuen, Chiung Lin Hsiang, Hsin Chu Hsien 307, Taiwan, R.O.C. TEST LOCATION (1): No. 81-1, Lu Liao Keng, 9th Ling,Wu Lung Tsuen, Chiung Lin Hsiang, Hsin Chu Hsien 307, Taiwan, Taiwan, R.O.C. TEST LOCATION (2): No.49, Ln. 206, Wende Rd., Shangshan Tsuen, Chiung Lin Hsiang, Hsin Chu Hsien 307, Taiwan, Taiwan, R.O.C. This report should not be used by the client to claim product certification, approval, or endorsement by TAF or any government agencies. This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification Report No.: RF120829E01 2 of 47 Report Format Version 5.0.0 TABLE OF CONTENTS RELEASE CONTROL RECORD ........................................................................................................ 4 1 CERTIFICATION ................................................................................................................ 5 2 SUMMARY OF TEST RESULTS ......................................................................................... 6 2.1 MEASUREMENT UNCERTAINTY ...................................................................................... 7 3 GENERAL INFORMATION ................................................................................................. 8 3.1 GENERAL DESCRIPTION OF EUT .................................................................................... 8 3.2 DESCRIPTION OF TEST MODES ...................................................................................... 9 3.3 TEST MODE APPLICABLITY AND TESTED CHANNEL DETAIL: ......................................10 3.4 GENERAL DESCRIPTION OF APPLIED STANDARDS .....................................................12 3.5 DESCRIPTION OF SUPPORT UNITS ...............................................................................13 3.6 CONFIGURATION OF SYSTEM UNDER TEST.................................................................14 4 TEST PROCEDURES AND RESULTS ..............................................................................16 4.1 CONDUCTED EMISSION MEASUREMENT .....................................................................16 4.1.1 LIMITS OF CONDUCTED EMISSION MEASUREMENT....................................................16 4.1.2 TEST INSTRUMENTS .......................................................................................................16 4.1.3 TEST PROCEDURES .......................................................................................................17 4.1.4 TEST SETUP ....................................................................................................................17 4.1.5 EUT OPERATING CONDITIONS .......................................................................................18 4.1.6 TEST RESULTS ................................................................................................................19 4.2 RADIATED EMISSION AND BANDEDGE MEASUREMENT ..............................................21 4.2.1 LIMITS OF RADIATED EMISSION AND BANDEDGE MEASUREMENT ............................21 4.2.2 TEST INSTRUMENTS .......................................................................................................22 4.2.3 TEST PROCEDURES .......................................................................................................23 4.2.4 DEVIATION FROM TEST STANDARD ..............................................................................23 4.2.5 TEST SETUP ....................................................................................................................24 4.2.6 EUT OPERATING CONDITIONS .......................................................................................24 4.2.7 TEST RESULTS ................................................................................................................25 4.3 NUMBER OF HOPPING FREQUENCY USED ..................................................................29 4.3.1 LIMIT OF HOPPING FREQUENCY USED .........................................................................29 4.3.2 TEST INSTRUMENTS .......................................................................................................29 4.3.3 TEST PROCEDURES .......................................................................................................29 4.3.4 DEVIATION FROM TEST STANDARD ...................................…

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Report No.: 120925E06 1 of 2 PHOTOGRAPHS OF THE TEST CONFIGURATION CONDUCTED EMISSION TEST Report No.: 120925E06 2 of 2 RADIATED EMISSION TEST