FCCID.CO- FCC ID Database
HomeCompaniesEquipment ClassesSearch

© 2026 FCC ID Database. All rights reserved.

AboutContactData sourced from FCC public records
  1. Home/
  2. Sensing Tek Co., Ltd./
  3. WMXGWZ2100

WMXGWZ2100WiFi/Zigbee Gateway

Sensing Tek Co., Ltd.
WiFi/Zigbee Gateway - FCC ID WMXGWZ2100 - Sensing Tek Co., Ltd.
Click to zoom

Application Details

Equipment Class
DTS - Digital Transmission System
Date of Grant
Apr 15, 2015
Application Purpose
Original Equipment
Date of Application
Apr 15, 2015
Equipment Note
WiFi/Zigbee Gateway
Frequency Range
2405.00000000 - 2480.00000000
Company
Sensing Tek Co., Ltd.
Country
Taiwan

Documents & Files

Select a file to view

Users Manual

↗

Cover Letter(s)

↗
↗

External Photos

↗

ID Label/Location Info

↗

Internal Photos

↗

RF Exposure Info

↗

Test Report

↗
↗

Test Setup Photos

↗

Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Users Manual

Sensing TEK Gateway User manual V1.0 1 WiFi/Zigbee Gateway user manual Mode:GWZ2100 Sensing TEK Gateway User manual V1.0 2 Manual overview Sensing TEK Reserves the right to modify this publication, and modify the content without obligation to notify any person or organization about the amendments or changes to the contents. The information within this document may evolve and change our service and website, old-fashioned, refer to hi-tech company limited www. SensingTEK.com.tw 's website to obtain current information. Handbook amendments 2014/11/12 Version 1.0 first edition Trademarks Sensing TEK Logos for Sensing TEK registered trademarks. All other company or product names mentioned herein are the trademarks or registered trademarks of their respective companies. Copyright © 2014 for all hi-tech company limited all rights reserved. This publication without Sensing TEK express written permission of Hi-Tech Corporation may not be co pied in whole or in part. Sensing TEK Gateway User manual V1.0 3 Directory Product overview Specification...................................................................................................................................................... 4 Context...................................................................................................................................................... 5 System...................................................................................................................................................... 5 Function...................................................................................................................................................... 5 Installation ( for quickly setting) Gateway connection set ........................................................................................................................... 6 Gatway basic group State set ..................................................................................................................... 7 WIFI wireless network established ........................................................................................................................... 8 Zigbee sensor pairing ........................................................................................................................ 9 WAN Internet set ........................................................................................................................ 10 Config backup set .............................................................................................................................. 11 camera setting................................................................................................................................. 11 Detailed function HES Settings (HES Gateway basic parameter )................................................................................................ 12 ZigBee (Zigbee wireless signals )..................................................................................................................... 14 IP Camera Settings (IP camera set )...................................................................................................... 16 Wireless (Wi-Fi wireless network )..................................................................................................................... 16 IPv4 Network Settings (IPv4 network set )................................................................................................ 19 VPN Settings ( Agent server set )............................................................................................................ 22 Management ( State Management )..................................................................................................................... 22 Logout ( cancellation ).......................................................................................................................................... 27 Sensing TEK Gateway User manual V1.0 4 Product overview Package contents Gateway Host, power supplies adapter DC12V/1A X1, and 3dB Antenna X2, the instructions say this Function overview Through Zigbee smart management architecture based on the agreement, which applies to indoor advantage, integration of TCP/IP concepts, using Wi-Fi through wireless data collector link Ethernet to cloud background, offering users surveillance, monitoring, calculation, analysis services, and then with the HMI Interface, smart device zero interaction with the user, a smart home management system distribution, however. Features  Via Ethernet, local area network,WLAN, andLAN Ethernet complete IPv4/IPv6 network connection  This device is looking forward to cure network commands and Web user interface support  Secure server identity authentication and connection  Reliable control and rapid response program logic controls  Keep 32 nodes in wireless sensor networks, maximum expandable up to 64 nodes  Pairing simplified Network Setup for wireless sensor networks  ActiveSync to manage data and status between the WAN and local managers  Support USB PORT can connect pen drive Sensing TEK Gateway User manual V1.0 5 Installation ( for quickly setting) Gateway Connect DC power supply after about 30 seconds: normal operation, Please note the following new devices what time : 1. Wi-Fi functionality is not turned on , use a cable way to do set up for the first time. 2. LAN 's factory default IP to 192.168.5.1 3. User ID:Admin / password:123456 First,Gateway connection setting 1. Use a CAT5 network cable , one end connected Gateway LAN, connect one end of your network card . 2. Open up your Control Panel > network and sharing Center > change adapter settings > you are connected to the network card > right mouse button. 3. Confirm that your network card is the IPv4 DHCP ( Automatic IP, Gateway distribution ). 4. Or manually set to the 192.168.5.X segments (the x stands for any number, not with the same equipment, such as…

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

Cover Letter(s)

Sensing TeK Co., Ltd. Mar. 30, 2015 Federal Communications Commission Authorization and Evaluation Division FCC ID: WMXGWZ2100 Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information applied this application as outlined below: Schematic Theory of Operation Block Diagram The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application Sincerely Signature Name: Hung Chang Chen Title: Director Tel: 886-3-5508383

Cover Letter(s)

Sensing TeK Co., Ltd. 4F-1,No.62,Chen Gung 5 st., ChuBei City, Hsinchu county Taiwan 302 Date: 30 Mar, 2015 FCC ID: WMXGWZ2100 Subject: Ad Hoc Mode Function Declaration To Whom it may concern, This device is only operating in the 2.4GHz (2412-2462MHz) band and not able to operate on non-US frequencies. The Country Code Selection function is not available for the end user. Please contact the one signed below or the authorized agent for this fililng. Regards, Yours sincerely, Signatory Signature Name: Hung Chang Chen Title: Director Tel: 886-3-5508383

External Photos

External Photo

ID Label/Location Info

FCC ID LABELING AND LOCATION FCC ID Label FCC ID Label Location The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925) WiFi/Zigbee Gateway M/N: GWZ2100 FCC ID: WMXGWZ2100 Sensing TeK Co., Ltd.

Internal Photos

Internal Photos of the EUT

RF Exposure Info

Shenzhen Asia Test Technology Co., Ltd. 7 / F, Xinwei Building, Gushu Village, Xixiang Town, Baoan District, Shenzhen, China Tel: +86)‐0755‐23284990 Email: att@att‐lab.com Http: // www.att‐lab.cn Page 1of 4 FCC RF Test Report Product Type :WiFi/Zigbee Gateway Report No :ATT-2015SZ0229145F-3 Applicant :Sensing TeK Co., Ltd. Address : 4F-1,No.62,Chen Gung 5 st., ChuBei City, Hsinchu county Taiwan 302 Trade Name :N/A Model Number : GWZ2100 List Model : N/A Test Specification : FCC Per 47 CFR 2.1091(b) Receive Date :15 Feb,2015 Test Period :16 Feb ,2015 to 11 Mar , 2015 Issue Date :12 Mar , 2015 Issue by Shenzhen Asia Test Technology Co.,Ltd. 7 / F, Xinwei Building, Gushu Village, Xixiang Town, Baoan District, Shenzhen, China. Note: This report shall not be reproduced except in full, without the written approval of Shenzhen Asia Test Technology Co.,Ltd. This document may be altered or revised by Asia Institute Technology (Dongguan) Limited. Personnel only, and shall be noted in the revision section of the document. The client should not use it to claim product endorsement by TAF, or any government agencies. The test results in the report only apply to the tested sample. Report Number:ATT-2015SZ0229145F-3 Page 2of 4 Verification of Compliance Issued Date: 12/03/2015 Product Type : WiFi/Zigbee Gateway Applicant : Sensing TeK Co., Ltd. Address : 4F-1,No.62,Chen Gung 5 st., ChuBei City, Hsinchu county Taiwan 302 Manufacturer : Sensing TeK Co., Ltd. Address : 4F-1,No.62,Chen Gung 5 st., ChuBei City, Hsinchu county Taiwan 302 Trade Name : N/A Model Number : GWZ2100 List Mode N/A FCC ID : WMXGWZ2100 EUT Rated Voltage : DC 12.0V From Adapter By AC 120V Adapter : : Model:AU1121206u Input:AC 100-240V 50/60Hz 0.5A Output :DC 12V 1A Applicable Standard : FCC Per 47 CFR 2.1091(b) Test Result : Complied Performing Lab. : Shenzhen Asia Test Technology Co.,Ltd. 7 / F, Xinwei Building, Gushu Village, Xixiang Town, Baoan District, Shenzhen, China The EUT described above is tested by Shenzhen Asia Test Technology Co.,Ltd. EMC Laboratory to determine the maximum emissions from the EUT. Shenzhen Asia Test Technology Co.,Ltd. EMC Laboratory assumed full responsibility for the accuracy of the test results. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.4 (2003) and the energy emitted by the sample EUT tested as described in this report is in compliance with FCC Rules Part 15.207, 15.209 and 15.247. The test results of this report relate only to the tested sample identified in this report. Approved By : Reviewed By : (Testing Engineer) ( Seal Chen) (Manager) (Jackie Deng) Report Number:ATT-2015SZ0229145F-3 Page 3of 4 1. Method of measurement 1.1 Applicable Standard According to §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to §1.1310 and §2.1091 RF exposure is calculated. KDB447498 v05r02: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 1.2 Limit Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100) * (900/f 2 )* 1.0 f/300 5 6 6 6 6 6 Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100) * (180/f 2 )* 0.2 f/1500 1.0 30 30 30 30 30 F=frequency in MHz *=Plane‐wave equivalent power density 1.3 MPE Calculation Method Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97‐01 S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna Report Number:ATT-2015SZ0229145F-3 Page 4of 4 TEST RESULTS The antenna of this product, under normal use condition, is at least 20cm away from the body of the user. as well as the gain of the used antenna is 3.00dBi, the RF power density can be obtained Wifi Test Frequency (MHz) Minimum Separation Distance (cm) Max Output Power (dBm) Output Power (mW) Antenna Gain (Numeric) Power Density (mW/cm 2 ) Power Density Limit FCC (mW/cm 2 ) Test Results 2412.00 20.00 18.35 68.3912 1.9953 0.0271 1 PASS 2437.00 20.00 18.73 74.6449 1.9953 0.0296 1 PASS 2462.00 20.00 18. 68 73.7904 1.9953 0.0293 1 PASS ZigBee Test Frequency (MHz) Minimum Separation Distance (cm) Max Output Power (dBm) Output Power (mW) Antenna Gain (Numeric) Power Density (mW/cm 2 ) Power Density Limit FCC (mW/cm 2 ) Test Results 2405.00 20.00 ‐1.345 0.7337 1.9953 0.0003 1 PASS 2400.00 20.00 ‐0.933 0.8067 1.9953 0.0003 1 PASS 2480.00 20.00 0.064 1.0148 1.9953 0.0004 1 PASS Simultaneous transmission According to KDB447498 v05r02, Simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based on the calculated/estimated, numerically modeled or measured field strengths or power density, is ≤ 1.0. Minimum Separation Distance (cm) MAX Wifi Power Density (mW/cm 2 ) MAX Zigbee Power Density (mW/cm 2 ) SumPower Density (mW/cm 2 ) MPE Limit Test Results 20.00 0.0296 0.0004 0.03 1 PASS END

Test Report

Shenzhen Asia Test Technology Co., Ltd. 7 / F, Xinwei Building, Gushu Village, Xixiang Town, Baoan District, Shenzhen, China Tel: +86)‐0755‐23284990 Email: att@att‐lab.com Http: // www.att‐lab.cn Page 1of 45 FCC RF Test Report Product Type :WiFi/Zigbee Gateway Report No :ATT-2015SZ0229145F-1 Applicant :Sensing TeK Co., Ltd. Address : 4F-1,No.62,Chen Gung 5 st., ChuBei City, Hsinchu county Taiwan 302 Trade Name :N/A Model Number : GWZ2100 List Model : N/A Test Specification : FCC 47 CFR PART 15 SUBPART C: Oct., 2013 ANSI C63.10:2009 KD558074 D01 DTS Meas Guidance v03r02 Receive Date :15 Feb,2015 Test Period :16 Feb ,2015 to 11 Mar , 2015 Issue Date :12 Mar , 2015 Issue by Shenzhen Asia Test Technology Co.,Ltd. 7 / F, Xinwei Building, Gushu Village, Xixiang Town, Baoan District, Shenzhen, China. Note: This report shall not be reproduced except in full, without the written approval of Shenzhen Asia Test Technology Co.,Ltd. This document may be altered or revised by Asia Institute Technology (Dongguan) Limited. Personnel only, and shall be noted in the revision section of the document. The client should not use it to claim product endorsement by TAF, or any government agencies. The test results in the report only apply to the tested sample. Report Number:ATT-2015SZ0229145F-1 Page 2of 45 Verification of Compliance Issued Date: 12/03/2015 Product Type : WiFi/Zigbee Gateway Applicant : Sensing TeK Co., Ltd. Address : 4F-1,No.62,Chen Gung 5 st., ChuBei City, Hsinchu county Taiwan 302 Manufacturer : Sensing TeK Co., Ltd. Address : 4F-1,No.62,Chen Gung 5 st., ChuBei City, Hsinchu county Taiwan 302 Trade Name : N/A Model Number : GWZ2100 FCC ID : WMXGWZ2100 EUT Rated Voltage : DC 12.0V From Adapter By AC 120V Adapter : : Model:AU1121206u Input:AC 100-240V 50/60Hz 0.5A Output :DC 12V 1A Applicable Standard : FCC 47 CFR PART 15 SUBPART C: Oct., 2013 ANSI C63.10:2009 KD558074 D01 DTS Meas Guidance v03r02 Test Result : Complied Performing Lab. : Shenzhen Asia Test Technology Co.,Ltd. 7 / F, Xinwei Building, Gushu Village, Xixiang Town, Baoan District, Shenzhen, China The EUT described above is tested by Shenzhen Asia Test Technology Co.,Ltd. EMC Laboratory to determine the maximum emissions from the EUT. Shenzhen Asia Test Technology Co.,Ltd. EMC Laboratory assumed full responsibility for the accuracy of the test results. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.4 (2003) and the energy emitted by the sample EUT tested as described in this report is in compliance with FCC Rules Part 15.207, 15.209 and 15.247. The test results of this report relate only to the tested sample identified in this report. Approved By :Reviewed By : (Testing Engineer) ( Seal Chen) (Manager) (Jackie Deng) Report Number:ATT-2015SZ0229145F-1 Page 3of 45 CONTENT 1 General Information .................................................................................................................................................... 4 1.1 Applied Standard ........................................................................................................................................... 4 1.2 Test Location ................................................................................................................................................. 4 1.3 Test Environment Condition .......................................................................................................................... 4 2 Test Summary ........................................................................................................................................................ 4 3 Description of the Equipment under Test (EUT) ........................................................................................................ 5 3.1 General Description ....................................................................................................................................... 5 3.2 EUTIdentity ................................................................................................................................................ 5 3.3 TechnicalDescription ..................................................................................................................................... 5 3.4 Customized Configurations ............................................................................................................................ 6 3.5 Test Environments ......................................................................................................................................... 6 3.6 Test Setup ..................................................................................................................................................... 7 3.7 Test condtions ............................................................................................................................................... 9 4 Main Test Instruments ........................................................................................................................................... 10 5 Main Tesr Instruments .......................................................................................................................................... 10 Report Number:ATT-2015SZ0229145F-1 Page 4of 45 1. General Information 1.1 Applied Standard Applied Rules: FCC 47 CFR PART 15 SUBPART C: Oct., 2013 Test Method: KD558074 D01 DTS Meas Guidance v03r02 1.2 Test Location TestLocation1: Shenzhen Asia Test Technology Co.,Ltd. Address: 7 / F, Xinwei Building, Gushu Village, Xixiang Town, Baoan District, Shenzhen, China FCC Registration No.: 348715 1.3 Test Environment Condition Ambient Temperature: 19.5to 25°C Ambient Relative Humidity: 40 to 55 % Atmospheric Pressure: Not applicable 2. Test Summary Test Item FCC Part No. Requirements Verdict DTS (6 dB) Bandwidth 15.247(a)(2) ≥ 500 kHz. PASS Maximum Peak Con…

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

Test Report

Shenzhen Asia Test Technology Co., Ltd. 7 / F, Xinwei Building, Gushu Village, Xixiang Town, Baoan District, Shenzhen, China Tel: +86)‐0755‐23284990 Email: att@att‐lab.com Http: // www.att‐lab.cn Page 1of 27 FCC RF Test Report Product Type :WiFi/Zigbee Gateway Report No :ATT-2015SZ0229145F-2 Applicant :Sensing TeK Co., Ltd. Address : 4F-1,No.62,Chen Gung 5 st., ChuBei City, Hsinchu county Taiwan 302 Trade Name :N/A Model Number : GWZ2100 List Model : N/A Test Specification : FCC 47 CFR PART 15 SUBPART C: Oct., 2013 ANSI C63.10:2009 KD558074 D01 DTS Meas Guidance v03r02 Receive Date :15 Feb,2015 Test Period :16 Feb ,2015 to 11 Mar , 2015 Issue Date :12 Mar , 2015 Issue by Shenzhen Asia Test Technology Co.,Ltd. 7 / F, Xinwei Building, Gushu Village, Xixiang Town, Baoan District, Shenzhen, China. Note: This report shall not be reproduced except in full, without the written approval of Shenzhen Asia Test Technology Co.,Ltd. This document may be altered or revised by Asia Institute Technology (Dongguan) Limited. Personnel only, and shall be noted in the revision section of the document. The client should not use it to claim product endorsement by TAF, or any government agencies. The test results in the report only apply to the tested sample. Report Number:ATT-2015SZ0229145F-2 Page 2of 27 Verification of Compliance Issued Date: 12/03/2015 Product Type : WiFi/Zigbee Gateway Applicant : Sensing TeK Co., Ltd. Address : 4F-1,No.62,Chen Gung 5 st., ChuBei City, Hsinchu county Taiwan 302 Manufacturer : Sensing TeK Co., Ltd. Address : 4F-1,No.62,Chen Gung 5 st., ChuBei City, Hsinchu county Taiwan 302 Trade Name : N/A Model Number : GWZ2100 List Mode N/A FCC ID : WMXGWZ2100 EUT Rated Voltage : DC 12.0V From Adapter By AC 120V Adapter : : Model:AU1121206u Input:AC 100-240V 50/60Hz 0.5A Output :DC 12V 1A Applicable Standard : FCC 47 CFR PART 15 SUBPART C: Oct., 2013 ANSI C63.10:2009 KD558074 D01 DTS Meas Guidance v03r02 Test Result : Complied Performing Lab. : Shenzhen Asia Test Technology Co.,Ltd. 7 / F, Xinwei Building, Gushu Village, Xixiang Town, Baoan District, Shenzhen, China The EUT described above is tested by Shenzhen Asia Test Technology Co.,Ltd. EMC Laboratory to determine the maximum emissions from the EUT. Shenzhen Asia Test Technology Co.,Ltd. EMC Laboratory assumed full responsibility for the accuracy of the test results. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.4 (2003) and the energy emitted by the sample EUT tested as described in this report is in compliance with FCC Rules Part 15.207, 15.209 and 15.247. The test results of this report relate only to the tested sample identified in this report. Approved By :Reviewed By : (Testing Engineer) ( Seal Chen) (Manager) (Jackie Deng) Report Number:ATT-2015SZ0229145F-2 Page 3of 27 CONTENT 1 General Information .................................................................................................................................................... 4 1.1 Applied Standard ........................................................................................................................................... 4 1.2 Test Location ................................................................................................................................................. 4 1.3 Test Environment Condition .......................................................................................................................... 4 2 Test Summary ........................................................................................................................................................ 4 3 Description of the Equipment under Test (EUT) ........................................................................................................ 5 3.1 General Description ....................................................................................................................................... 5 3.2 EUTIdentity ................................................................................................................................................ 5 3.3 TechnicalDescription ..................................................................................................................................... 5 3.4 Customized Configurations ............................................................................................................................ 6 3.5 Test Environments ......................................................................................................................................... 6 3.6 Test Setup ..................................................................................................................................................... 7 3.7 Test condtions ............................................................................................................................................... 9 4 Main Test Instruments ........................................................................................................................................... 10 5 Main Tesr Instruments .......................................................................................................................................... 10 Report Number:ATT-2015SZ0229145F-2 Page 4of 27 1. General Information 1.1 Applied Standard Applied Rules: FCC 47 CFR PART 15 SUBPART C: Oct., 2013 Test Method: KD558074 D01 DTS Meas Guidance v03r02 1.2 Test Location TestLocation1: Shenzhen Asia Test Technology Co.,Ltd. Address: 7 / F, Xinwei Building, Gushu Village, Xixiang Town, Baoan District, Shenzhen, China FCC Registration No.: 348715 1.3 Test Environment Condition Ambient Temperature: 19.5to 25°C Ambient Relative Humidity: 40 to 55 % Atmospheric Pressure: Not applicable 2. Test Summary Test Item FCC Part No. Requirements Verdict DTS (6 dB) Bandwidth 15.247(a)(2) ≥ 500 kHz. PASS Ma…

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

Test Setup Photos

Test Setup Photos of the EUT_DTS

Contact Information

Applicant

Hung Chang Chen(Director)
[email protected]886-3-5508383Fax: 886-3-5500506

Test Firm

Shenzhen Asia Test Technology Co.,Ltd.jim he
[email protected]86(0)75523284990

Technical Specifications

#Rule PartsFrequency RangePower Output
215C2.40 GHz - 2.48 GHz100.00 µW
Confidentiality
Long Term
Grant Notes
Output Power listed is peak conducted. This device must be installed and operated to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. Endusers must be provided with the transmitter operating conditions for satisfying RF exposure compliance. This device has 20 and 40 MHz BW modes.

Other Applications from Sensing Tek Co., Ltd.

Multiple Function Sensor - FCC ID WMXTHZ100 - Sensing Tek Co., Ltd.
WMXTHZ100

Multiple Function Sensor

Apr 15, 2015

Equipment Class

DTS - Digital Transmission System
Wireless Siren - FCC ID WMXSRZ2100 - Sensing Tek Co., Ltd.
WMXSRZ2100

Wireless Siren

Apr 15, 2015

Equipment Class

DTS - Digital Transmission System