TCT TEST REPORT
FCC ID: 2APP6ARG-05
Product: Wireless Audio Transmission
Model No.: ARG-05
Additional Model: ARG-06, ARG-07, ARG-08, A4, ARC1
Trade Mark: AROMA
Report No.: TCT190226E014
Issued Date: Mar. 07, 2019
Issued for:
Aroma Music Co., Ltd.
Floor 6, Building 56 Baotian Industry Zone, Baotian 3 Road, Bao An District, Shenzhen 518102, China
Issued By:
Shenzhen Tongce Testing Lab.
1B/F., Building 1, Yibaolai Industrial Park, Qiaotou, Fuyong, Baoan District, Shenzhen, Guangdong, China
TEL: +86-755-27673339
FAX: +86-755-27673332
1. Test Certification
| Product: | Wireless Audio Transmission |
| Model No.: | ARG-05 |
| Additional Model: | ARG-06, ARG-07, ARG-08, A4, ARC1 |
| Trade Mark: | AROMA |
| Applicant: | Aroma Music Co., Ltd. |
| Address: | Floor 6, Building 56 Baotian Industry Zone, Baotian 3 Road, Bao An District, Shenzhen 518102, China |
| Manufacturer: | Aroma Music Co., Ltd. |
| Address: | Floor 6, Building 56 Baotian Industry Zone, Baotian 3 Road, Bao An District, Shenzhen 518102, China |
| Date of Test: | Feb. 27, 2019 - Mar. 06, 2019 |
| Applicable Standards: | FCC CFR Title 47 Part 15 Subpart C Section 15.249 |
The above equipment has been tested by Shenzhen Tongce Testing Lab. and found compliance with the requirements set forth in the technical standards mentioned above. The results of testing in this report apply only to the product/system, which was tested. Other similar equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties.
Tested By: Kevin Huang (Mar. 06, 2019)
Reviewed By: Beryl Zhao (Mar. 07, 2019)
Approved By: Tomsin (Mar. 07, 2019)
2. Test Result Summary
| Requirement | CFR 47 Section | Result |
|---|---|---|
| Antenna Requirement | §15.203 | PASS |
| AC Power Line Conducted Emission | §15.207 | N/A |
| Field Strength of Fundamental | §15.249 (a) | PASS |
| Spurious Emissions | §2.1053 §15.249 (a) (d)/ §15.209/ §2.1053 | PASS |
| Band Edge | §15.249 (d)/ §15.205 | PASS |
| 20dB Occupied Bandwidth | §2.1049 §15.215 (c) | PASS |
Note:
- 1. Pass: Test item meets the requirement.
- 2. Fail: Test item does not meet the requirement.
- 3. N/A: Test case does not apply to the test object.
- 4. The test result judgment is decided by the limit of test standard.
3. EUT Description
| Product: | Wireless Audio Transmission |
| Model No.: | ARG-05 |
| Additional Model: | ARG-06, ARG-07, ARG-08, A4, ARC1 |
| Trade Mark: | AROMA |
| Hardware Version: | 20181220 |
| Software Version: | V1.0 |
| Operation Frequency: | 5820MHz |
| Number of Channel: | 1 |
| Modulation Technology: | GFSK |
| Antenna Type: | PCB Antenna |
| Antenna Gain: | 3.49dBi |
| Power Supply: | Rechargeable Li-ion Battery DC 3.7V |
| Remark: | All models above are identical in interior structure, electrical circuits and components, and just appearances are different for the marketing requirement. |
Operation Frequency Each of Channel:
| Channel | Frequency |
|---|---|
| 1 | 5820MHz |
4. General Information
4.1. Test Environment and Mode
| Operating Environment: | |
| Temperature: | 25.0 °C |
| Humidity: | 54 % RH |
| Atmospheric Pressure: | 1010 mbar |
| Test Mode: | |
| Engineering mode: | Keep the EUT in continuous transmitting by select channel |
The sample was placed (0.8m below 1GHz, 1.5m above 1GHz) above the ground plane of 3m chamber. Measurements in both horizontal and vertical polarities were performed. During the test, each emission was maximized by: having the EUT continuously working, investigated all operating modes, rotated about all 3 axis (X, Y & Z) and considered typical configuration to obtain worst position, manipulating interconnecting cables, rotating the turntable, varying antenna height from 1m to 4m in both horizontal and vertical polarizations. The emissions worst-case are shown in Test Results of the following pages.
4.2. Description of Support Units
The EUT has been tested as an independent unit with other necessary accessories or support units. The following support units or accessories were used to form a representative test configuration during the tests.
| Equipment | Model No. | Serial No. | FCC ID | Trade Name |
|---|---|---|---|---|
| / | / | / | / | / |
Note:
- 1. All the equipment/cables were placed in the worst-case configuration to maximize the emission during the test.
- 2. Grounding was established in accordance with the manufacturer's requirements and conditions for the intended use.
5. Facilities and Accreditations
5.1. Facilities
Shenzhen Tongce Testing Lab
The test facility is recognized, certified, or accredited by the following organizations:
- FCC - Registration No.: 645098
- IC - Registration No.: 10668A-1
The 3m Semi-anechoic chamber has been registered and fully described in a report with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in our files.
The 3m Semi-anechoic chamber of Shenzhen TCT Testing Technology Co., Ltd. has been registered by Certification and Engineering Bureau of Industry Canada for radio equipment testing
5.2. Location
Shenzhen Tongce Testing Lab
Address: 1B/F., Building 1, Yibaolai Industrial Park, Qiaotou, Fuyong, Baoan District, Shenzhen, Guangdong, China
TEL: +86-755-27673339
5.3. 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 | MU |
|---|---|---|
| 1 | Conducted Emission | ±2.56dB |
| 2 | RF power, conducted | ±0.12dB |
| 3 | Spurious emissions, conducted | ±0.11dB |
| 4 | All emissions, radiated(<1GHz) | ±3.92dB |
| 5 | All emissions, radiated(>1GHz) | ±4.28dB |
| 6 | Temperature | ±0.1°C |
| 7 | Humidity | ±1.0% |
6. Test Results and Measurement Data
6.1. Antenna Requirement
| Standard requirement: | FCC Part15 C Section 15.203 |
| 15.203 requirement: | An intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator, the manufacturer may design the unit so that a broken antenna can be replaced by the user, but the use of a standard antenna jack or electrical connector is prohibited. |
| E.U.T Antenna: | The EUT antenna is PCB antenna which permanently attached, and the best case gain of the antenna is 3.49dBi. |
[Image of the EUT antenna]
6.2. Conducted Emission
6.2.1. Test Specification
| Test Requirement: | FCC Part15 C Section 15.207 | ||||||||||||
| Test Method: | ANSI C63.10:2013 | ||||||||||||
| Frequency Range: | 150 kHz to 30 MHz | ||||||||||||
| Receiver setup: | RBW=9 kHz, VBW=30 kHz, Sweep time=auto | ||||||||||||
| Limits: |
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| Test Setup: | [Diagram of Conducted Emission Test Setup] | ||||||||||||
| Test Mode: | Transmitting mode with modulation | ||||||||||||
| Test Procedure: | 1. The E.U.T and simulators are connected to the main power through a line impedance stabilization network (L.I.S.N.). This provides a 50ohm/50uH coupling impedance for the measuring equipment. 2. The peripheral devices are also connected to the main power through a LISN that provides a 50ohm/50uH coupling impedance with 50ohm termination. (Please refer to the block diagram of the test setup and photographs). 3. Both sides of A.C. line are checked for maximum conducted interference. In order to find the maximum emission, the relative positions of equipment and all of the interface cables must be changed according to ANSI C63.10:2013 on conducted measurement. |
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| Test Result: | PASS |
6.2.2. Test Instruments
Conducted Emission Shielding Room Test Site (843)
| Equipment | Manufacturer | Model | Serial Number | Calibration Due |
|---|---|---|---|---|
| Test Receiver | R&S | ESPI | 101402 | Jul. 17, 2019 |
| LISN | Schwarzbeck | NSLK 8126 | 8126453 | Sep. 20, 2019 |
| Coax cable (9KHz-30MHz) | TCT | CE-05 | N/A | Sep. 16, 2019 |
| EMI Test Software | Shurple Technology | EZ-EMC | N/A | N/A |
Note: The calibration interval of the above test instruments is 12 months and the calibrations are traceable to international system unit (SI).
6.2.3. Test data
[Graph: Conducted Emission on Line Terminal of the power line (150 kHz to 30MHz)]
| No. | Mk. | Freq. (MHz) | Reading Level (dBuV) | Correct Factor (dB/m) | Measure-ment (dBuV) | Limit (dBuV) | Over (dB) | Detector | Comment |
|---|---|---|---|---|---|---|---|---|---|
| 1 | * | 0.1680 | 37.29 | 10.18 | 47.47 | 65.06 | -17.59 | peak | |
| 2 | * | 0.5100 | 30.96 | 10.23 | 41.19 | 56.00 | -14.81 | peak | |
| 3 | 1.1849 | 21.33 | 10.25 | 31.58 | 56.00 | -24.42 | peak | ||
| 4 | 3.5205 | 16.80 | 10.31 | 27.11 | 56.00 | -28.89 | peak | ||
| 5 | 7.0575 | 15.93 | 10.41 | 26.34 | 60.00 | -33.66 | peak | ||
| 6 | 13.0335 | 13.36 | 10.52 | 23.88 | 60.00 | -36.12 | peak |
Note:
- Freq. = Emission frequency in MHz
- Reading level (dBμV) = Receiver reading
- Corr. Factor (dB) = Antenna factor + Cable loss
- Measurement (dBμV) = Reading level (dBμV) + Corr. Factor (dB)
- Limit (dBμV) = Limit stated in standard
- Margin (dB) = Measurement (dBμV) – Limits (dBμV)
- Q.P. =Quasi-Peak
- AVG =average
- Any value more than 10dB below limit have not been specifically reported.
- * is meaning the worst frequency has been tested in the frequency range 150 kHz to 30MHz
[Graph: Conducted Emission on Neutral Terminal of the power line (150 kHz to 30MHz)]
| No. | Mk. | Freq. (MHz) | Reading Level (dBuV) | Correct Factor (dB/m) | Measure-ment (dBuV) | Limit (dBuV) | Over (dB) | Detector | Comment |
|---|---|---|---|---|---|---|---|---|---|
| 1 | * | 0.1680 | 37.33 | 10.18 | 47.51 | 65.06 | -17.55 | peak | |
| 2 | * | 0.2040 | 35.48 | 10.19 | 45.67 | 63.45 | -17.78 | peak | |
| 3 | * | 0.5100 | 33.93 | 10.23 | 44.16 | 56.00 | -11.84 | peak | |
| 4 | 1.1174 | 22.66 | 10.25 | 32.91 | 56.00 | -23.09 | peak | ||
| 5 | 2.0264 | 20.66 | 10.28 | 30.94 | 56.00 | -25.06 | peak | ||
| 6 | 5.3520 | 20.20 | 10.36 | 30.56 | 60.00 | -29.44 | peak |
Note: Freq. = Emission frequency in MHz
Reading level (dBμV) = Receiver reading
Corr. Factor (dB) = Antenna factor + Cable loss
Measurement (dBμV) = Reading level (dBμV) + Corr. Factor (dB)
Limit (dBμV) = Limit stated in standard
Q.P. =Quasi-Peak
Margin (dB) = Measurement (dBμV) – Limits (dBμV)
AVG =average
Any value more than 10dB below limit have not been specifically reported.
* is meaning the worst frequency has been tested in the frequency range 150 kHz to 30MHz.
6.3. Radiated Emission Measurement
6.3.1. Test Specification
| Test Requirement: | FCC Part15 C Section 15.209/ Part 2 J Section 2.1053 | ||||||||||||||||||||||||||||||
| Test Method: | ANSI C63.10:2013 | ||||||||||||||||||||||||||||||
| Frequency Range: | 9 kHz to 10 GHz | ||||||||||||||||||||||||||||||
| Measurement Distance: | 3 m | ||||||||||||||||||||||||||||||
| Antenna Polarization: | Horizontal & Vertical | ||||||||||||||||||||||||||||||
| Receiver Setup: |
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| Limit(Field strength of the fundamental signal): |
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| Limit(Spurious Emissions): |
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| Limit (band edge) : | Emissions radiated outside of the specified frequency bands, except for harmonics, shall be attenuated by at least 50 dB below the level of the fundamental or to the general radiated emission limits in Section 15.209, whichever is the lesser attenuation. | ||||||||||||||||||||||||||||||
| Test Procedure: | 1. The EUT was placed on the top of a rotating table 0.8 meters above the ground at a 3 meter chamber in below 1GHz, 1.5m above the ground in above 1GHz. The table was rotated 360 degrees to determine the position of the highest radiation. 2. The EUT was set 3 meters away from the interference-receiving antenna, which was mounted on the top of a variable-height antenna tower. 3. The antenna height is varied from one meter to four meters above the ground to determine the maximum value of the field strength. Both horizontal and vertical polarizations of the antenna are set to make the measurement. 4. For each suspected emission, the EUT was arranged to its worst case and then the antenna was tuned to heights from 1 meter to 4 meters and the rotatable table was turned from 0 degrees to 360 degrees to find the maximum reading. 5. The test-receiver system was set to Peak Detect Function and Specified Bandwidth with Maximum Hold Mode. 6. If the emission level of the EUT in peak mode was 10dB lower than the limit specified, then testing could be stopped and the peak values of the EUT would be reported. Otherwise the emissions that did not have 10dB margin would be re-tested one by one using peak, quasi-peak or average method as specified and then reported in a data sheet. |
[Diagrams of Test Setup for Radiated Emissions below 30MHz, 30MHz to 1GHz, and Above 1GHz]
Test results: PASS
6.3.2. Test Instruments
Radiated Emission Test Site (966)
| Name of Equipment | Manufacturer | Model | Serial Number | Calibration Due |
|---|---|---|---|---|
| Test Receiver | ROHDE&SCHWARZ ARZ | ESIB7 | 100197 | Jul. 17, 2019 |
| Spectrum Analyzer | ROHDE&SCHWARZ ARZ | FSQ40 | 200061 | Sep. 20, 2019 |
| Pre-amplifier | EM Electronics Corporation CO.,LTD | EM30265 | 07032613 | Sep. 16, 2019 |
| Pre-amplifier | HP | 8447D | 2727A05017 | Sep. 16, 2019 |
| Loop antenna | ZHINAN | ZN30900A | 12024 | Oct. 20, 2019 |
| Broadband Antenna | Schwarzbeck | VULB9163 | 340 | Sep. 02, 2019 |
| Horn Antenna | Schwarzbeck | ВВНА 9120D | 631 | Oct. 20, 2019 |
| Horn Antenna | A-INFO | LB-180400-KF | J211020657 | Sep. 16, 2019 |
| Antenna Mast | Keleto | RE-AM | N/A | N/A |
| Coax cable (9KHz-1GHz) | TCT | RE-low-01 | N/A | Sep. 16, 2019 |
| Coax cable (9KHz-40GHz) | TCT | RE-high-02 | N/A | Sep. 16, 2019 |
| Coax cable (9KHz-1GHz) | TCT | RE-low-03 | N/A | Sep. 16, 2019 |
| Coax cable (9KHz-40GHz) | TCT | RE-high-04 | N/A | Sep. 16, 2019 |
| EMI Test Software | Shurple Technology | EZ-EMC | N/A | N/A |
Note: The calibration interval of the above test instruments is 12 months and the calibrations are traceable to international system unit (SI).
6.3.3. Test Data
Field Strength of Fundamental
| Frequency (MHz) | Emission PK/AV (dBuV/m) | Horizontal /Vertical | Limits PK/AV (dBuV/m) | Margin (dB) |
|---|---|---|---|---|
| 5820 | 88.26(PK) | H | 114.0 | -25.74 |
| 5820 | 75.63(PK) | H | 94.0 | -18.37 |
| 5820 | 88.37(PK) | V | 114.0 | -25.63 |
| 5820 | 76.78(PK) | V | 94.0 | -17.22 |
Spurious Emissions
Frequency Range (9 kHz-30MHz)
| Frequency (MHz) | Level@3m (dBμV/m) | Limit@3m (dBμV/m) |
|---|---|---|
| -- | -- | -- |
| -- | -- | -- |
| -- | -- | -- |
Note:
- 1. Emission Level=Reading+ Cable loss-Antenna factor-Amp factor
- 2. The emission levels are 20 dB below the limit value, which are not reported. It is deemed to comply with the requirement
[Graph: Horizontal Radiated Emission, Frequency Range (30MHz-1GHz)]
| No. | Mk. | Freq. (MHz) | Reading Level (dBuV) | Correct Measure-ment Factor (dB/m) | Limit (dBuV/m) | Over (dB) | Detector | Antenna Height (cm) | Table Degree (degree) | Comment | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | * | 30.4246 | 34.70 | -11.00 | 23.70 | 40.00 | -16.30 | peak | |||
| 2 | * | 62.7432 | 35.01 | -13.27 | 21.74 | 40.00 | -18.26 | peak | |||
| 3 | * | 92.3461 | 33.37 | -9.84 | 23.53 | 43.50 | -19.97 | peak | |||
| 4 | 155.3305 | 40.50 | -16.01 | 24.49 | 43.50 | -19.01 | peak | ||||
| 5 | 471.4664 | 31.12 | -7.92 | 23.20 | 46.00 | -22.80 | peak | ||||
| 6 | * | 674.6767 | 31.31 | -5.53 | 25.78 | 46.00 | -20.22 | peak |
Note: Freq. = Emission frequency in MHz
Reading level (dBμV) = Receiver reading
Corr. Factor (dB) = Antenna factor + Cable loss
Measurement (dBμV) = Reading level (dBμV) + Corr. Factor (dB)
Limit (dBμV) = Limit stated in standard
Q.P. =Quasi-Peak
Margin (dB) = Measurement (dBμV) – Limits (dBμV)
AVG =average
Any value more than 10dB below limit have not been specifically reported.
* is meaning the worst frequency has been tested in the frequency range 30MHz to 1000MHz
[Graph: Vertical Radiated Emission, Frequency Range (30MHz-1GHz)]
| No. | Mk. | Freq. (MHz) | Reading Level (dBuV) | Correct Measure-ment Factor (dB/m) | Limit (dBuV/m) | Over (dB) | Detector | Antenna Height (cm) | Table Degree (degree) | Comment | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | * | 30.0000 | 38.00 | -11.00 | 27.00 | 40.00 | -13.00 | peak | |||
| 2 | * | 53.3793 | 32.44 | -10.81 | 21.63 | 40.00 | -18.37 | peak | |||
| 3 | * | 70.2095 | 38.56 | -15.65 | 22.91 | 40.00 | -17.09 | peak | |||
| 4 | 149.9676 | 41.54 | -16.26 | 25.28 | 43.50 | -18.22 | peak | ||||
| 5 | 343.6505 | 31.41 | -9.84 | 21.57 | 46.00 | -24.43 | peak | ||||
| 6 | 554.1707 | 33.30 | -6.89 | 26.41 | 46.00 | -19.59 | peak |
Note: Freq. = Emission frequency in MHz
Reading level (dBμV) = Receiver reading
Corr. Factor (dB) = Antenna factor + Cable loss
Measurement (dBμV) = Reading level (dBμV) + Corr. Factor (dB)
Limit (dBμV) = Limit stated in standard
Q.P. =Quasi-Peak
Margin (dB) = Measurement (dBμV) – Limits (dBμV)
AVG =average
Any value more than 10dB below limit have not been specifically reported.
* is meaning the worst frequency has been tested in the frequency range 30MHz to 1000MHz
[Graph: Above 1GHz Radiated Emission Data]
| Frequency Ant. Pol. (MHz) H/V | Peak reading (dBuV) | AV reading (dBuV) | Correction Factor (dB/m) | Emission Level Peak (dBμV/m) | Emission Level AV (dBμV/m) | Peak limit (dBμV/m) | AV limit (dBμV/m) | Margin (dB) |
|---|---|---|---|---|---|---|---|---|
| 11640 H | 41.47 | -- | 8.02 | 49.49 | -- | 74 | 54 | -4.51 |
| 17460 H | 42.51 | -- | 9.87 | 52.38 | -- | 74 | 54 | -1.62 |
| 11640 V | 40.87 | -- | 8.02 | 48.89 | -- | 74 | 54 | -5.11 |
| 17460 V | 42.31 | -- | 0.87 | 52.18 | -- | 74 | 54 | -1.82 |
Note:
- 1. Emission Level=Peak Reading + Correction Factor; Correction Factor= Antenna Factor + Cable loss – Pre-amplifier
- 2. Margin (dB) = Emission Level (Peak)(dBμV/m) - AV limit (dBuV/m)
- 3. The emission levels of other frequencies are very lower than the limit and not show in test report.
- 4. Measurements were conducted from 1 GHz to the 10th harmonic of highest fundamental frequency.
- 5. Data of measurement shown "---"in the above table mean that the reading of emissions is attenuated more than 20 dB below the limits or the field strength is too small to be measured.
[Graph: Band Edge Requirement Data]
| Frequency Ant. Pol. (MHz) H/V | Peak reading (dBuV) | AV reading (dBuV) | Correction Factor (dB/m) | Emission Level Peak (dBμV/m) | Emission Level AV (dBμV/m) | Peak limit (dBμV/m) | AV limit (dBμV/m) | Margin (dB) |
|---|---|---|---|---|---|---|---|---|
| 5885 H | 41.31 | -- | 8.87 | 50.18 | -- | 74.00 | 54.00 | -3.82 |
| 5885 V | 41.97 | -- | 8.87 | 50.13 | -- | 74.00 | 54.00 | -3.16 |
Note:
- 1. Emission Level=Peak Reading + Correction Factor; Correction Factor= Antenna Factor + Cable loss – Pre-amplifier
- 2. Margin (dB) = Emission Level (Peak)(dBμV/m) - AV limit (dBuV/m).
- 3. The emission levels of other frequencies are very lower than the limit and not show in test report.
- 4. Measurements were conducted from 1 GHz to the 10th harmonic of highest fundamental frequency.
- 5. Data of measurement shown "---"in the above table mean that the reading of emissions is attenuated more than 20 dB below the limits or the field strength is too small to be measured.
6.4. 20dB Occupied Bandwidth
6.4.1. Test Specification
| Test Requirement: | FCC Part15 C Section 15.215(c)/ Part 2 J Section 2.1049 |
| Test Method: | ANSI C63.10: 2013 |
| Limit: | N/A |
| Test setup: | [Diagram of Test Setup for 20dB Occupied Bandwidth] |
| Test Mode: | Transmitting mode with modulation |
| Test results: | PASS |
6.4.2. Test Instruments
RF Test Room
| Equipment | Manufacturer | Model | Serial Number | Calibration Due |
|---|---|---|---|---|
| Spectrum Analyzer | R&S | FSU | 200054 | Sep. 20, 2019 |
Note: The calibration interval of the above test instruments is 12 months and the calibrations are traceable to international system unit (SI).
6.4.3. Test data
| Test Frequency (MHz) | 20dB Occupy Bandwidth (MHz) | Limit | Conclusion |
|---|---|---|---|
| 5820 | 4.06 | -- | PASS |
[Plot of 20dB Occupied Bandwidth]
Appendix A: Photographs of Test Setup
Product: Wireless audio transmitter
Model: ARG-05
Radiated Emission
[Image of Radiated Emission Test Setup]
[Image of Radiated Emission Test Setup]
Appendix B: Photographs of EUT
Product: Wireless audio transmitter
Model: ARG-05
External Photos
[Image of EUT External Photo]
[Image of EUT External Photo]
[Image of EUT External Photo]
[Image of EUT External Photo]
Internal Photos
[Image of EUT Internal Photo]
[Image of EUT Internal Photo]
[Image of EUT Internal Photo]
[Image of EUT Internal Photo]
[Image of EUT Internal Photo]
[Image of EUT Internal Photo]
[Image of Battery Photo]
