HDB-6461-1311-12.4GHz HP RF Stamp Module

Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 46 of 57 Appendix M: Manual Please refer to the following pages. USER MANUAL Model# 6461-1311-1 DESCRIPTION 6461-1311-1 has a microcontroller, an RF transceiver, an RF amplifier and a flash memory chip. The differential output of the transceiver is fed to a balun and then to an RF amplifier, Low pass filter and finally to a coaxial connector. The microcontroller runs a network stack that supports various commands for setting the RF channel and transmits power. The network stack periodically turns on the receiver to sniff for incoming packets. REGULATORY INFORMATION The 6461-1311-1 module has been designed to operate with the antenna listed below and having a maximum gain of 3.2 dBi. The required antenna impedance is 50 ohms. Part Number Mfg Type Gain(dBi) ANT-2.4-CW-HW Antenna factor Omni 3.2 The OEM is free to choose another vendor’s antenna of like type and equal or lesser gain as an antenna appearing in the table and still maintain compliance. Reference FCC Part 15.204(c)(4) for further information on this topic. The recommended separation distance for this equipment is 20 cm. To reduce potential radio interference to other users, the antenna type and gain should be chosen so that the equivalent isotropically radiated power (EIRP) is not more than that permitted for successful communication. Changes or modifications not expressly approved by Sutron Corporation could void the user’s authority to operate the equipment. This device complies with Industry Canada license-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 radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. OEM Responsibilities WARNING: The OEM must ensure that FCC and IC labeling requirements are met. This includes a clearly visible label on the outside of the OEM enclosure specifying the appropriate FCC/IC identifiers for this product as well as the FCC notice below. Note: Contains FCC ID: HDB-6461-1311-1 IC: 1088A-646113111 The enclosed 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. Label and text information should be in a size of type large enough to be readily legible, consistent with the dimensions of the equipment and the label. However, the type size for the text is not required to be larger than eight pt

Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 34 of 57 Appendix B: Agency Authorization Letter Please refer to the following page.

Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 35 of 57 Appendix C: FCC Confidentiality Request Letter Please refer to the following page.

Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 36 of 57 Appendix D: FCC Limited Modular Approval Criteria Please refer to the following page.

Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 51 of 57 Appendix O: External Photographs Photograph 7: EUT Top View with Shield Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 52 of 57 Photograph 8: EUT Top View without Shield Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 53 of 57 Photograph 9: EUT Bottom View Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 54 of 57 Photograph 10: Sample Host

Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 41 of 57 Appendix I: ID Label and Label Location Photograph 1: ID Label on EUT Top Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 42 of 57 Sample Host Label Host Label Location Sample Photograph 2: Sample Host Label Location This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. Host Label Location this device may not cause harmful interference, and interference received, including interference that may cause undesired operation. Contains FCC ID: HDB-6461-1311-1 IC: 1088A-646113111 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. Contains FCC ID: HDB-6461-1311-1 IC: 1088A-646113111

Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 55 of 57 Appendix P: Internal Photographs Photograph 11: EUT Top View with Shield Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 56 of 57 Photograph 12: EUT Top View without Shield Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 57 of 57 Photograph 13: EUT Bottom View

Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 33 of 57 Appendix A: FCC Part 1.1307, 1.1310, 2.1091, 2.1093; IC RSS-Gen: RF Exposure - MPE Using FCC 1.1310 Table 1B as guidance, the maximum permissible RF exposure for an uncontrolled environment is 1 mW/cm 2 for the frequencies used in this device (5730 to 5825 MHz). The worst case power is used for the calculation below. The actual power density for the EUT calculated as shown below. ) 4 /( ) ( 2 d G P S      where: S = power density P = transmitter conducted power in (W) G = antenna numeric gain d = distance to radiation center (m) Frequency (MHz) Antenna Gain (dBi) Antenna Gain (numeric) Conducted Power (W) Separation Distance (cm) Power Density (mW/cm 2 ) 2415 – 2460 3.2 2.09 0.246 20 0.1 Radiation Exposure Statement The calculated power density is well below the limit. Nonetheless, the recommended separation distance for this equipment is 20 cm.

Engineering Solutions & Electromagnetic Compatibility Services 360 Herndon Pkwy | Suite 1400 | Herndon | Virginia 20170 Phone: 703.689.0368 | Fax: 703.689.2056 | www.rheintech.com FCC & Industry Canada Limited Modular Approval Certification Application Report Test Lab: Rhein Tech Laboratories, Inc. Tel: 703-689-0368 360 Herndon Parkway Fax: 703-689-2056 Suite 1400 www.rheintech.com Herndon, VA 20170 E-Mail: [email protected] Applicant: Sutron Corporation Tel: (703) 406-2800 22400 Davis Drive Sterling, VA 20164 FCC/IC ID HDB-6461-1311-1/ 1088A-646113111 Test Report Date September 11, 2014 Platform N/A RTL Work Order # 2014075 Model # 6461-1311-1 RTL Quote # QRTL14-075A American National Standard Institute ANSI C63.4-2003: Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz FCC Classification DTS – Part 15 Digital Transmission System FCC Rule Part(s)/ Guidance FCC Rules Part 15.247: Operation within the bands 920-928 MHz, 2400- 2483.5 MHz and 5725-5850 MHz Direct Sequence System (10-01-13) Industry Canada RSS-210 Issue 8: Low Power License-Exempt Communications Devices RSS-Gen: Issue 3; 2010 General Requirements and Information for the Certification of Radio Apparatus Digital Interface Information Digital Interface was found to be compliant Frequency Range (MHz) Output Power (W) Frequency Tolerance Emission Designator 2415 – 2460 0.246 N/A 1M60FXD I, the undersigned, hereby declare that the equipment tested and referenced in this report conforms to the identified standard(s) as described in this test report. No modifications were made to the equipment during testing in order to achieve compliance with these standards. Furthermore, there was no deviation from, additions to, or exclusions from, the applicable parts of FCC Part 2, FCC Part 15, RSS-210, and ANSI C63.4. Signature: Date: September 11, 2014 Typed/Printed Name: Desmond A. Fraser Position: President This report may not be reproduced, except in full, without the written approval of Rhein Tech Laboratories, Inc.and Sutron Corp. The test results relate only to the item(s) tested. These tests are accredited and meet the requirements of ISO/IEC 17025 as verified by ANSI-ASQ National Accreditation Board/ACLASS. Refer to certificate and scope of accreditation AT-1445. Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 2 of 57 Table of Contents 1 General Information ............................................................................................................................... 5 1.1 Scope ............................................................................................................................................ 5 1.2 Description of EUT ........................................................................................................................ 5 1.3 Test Facility ................................................................................................................................... 5 1.4 Related Submittal(s)/Grant(s) ....................................................................................................... 5 1.5 Modifications ................................................................................................................................. 5 2 Test Information ..................................................................................................................................... 6 2.1 Description of Test Modes ............................................................................................................ 6 2.2 Exercising the EUT ....................................................................................................................... 6 2.3 Test Result Summary .................................................................................................................... 6 2.4 Test System Details ...................................................................................................................... 7 2.5 Configuration of Tested System .................................................................................................... 7 3 Peak Output Power – FCC §15.247(b)(1); RSS-210 §A8.4(4) .............................................................. 8 3.1 Power Output Test Procedure ....................................................................................................... 8 3.2 Power Output Test Data ................................................................................................................ 8 4 Compliance with the Band Edge – FCC §15.247(d); RSS-210 §2.2 ..................................................... 9 4.1 Band Edge Test Procedure ........................................................................................................... 9 4.2 Restricted Band Edge Test Results ............................................................................................ 10 4.2.1 Calculation of Lower Band Edge ............................................................................................. 10 4.2.2 Calculation of Upper Band Edge ............................................................................................. 11 5 Antenna Conducted Spurious Emissions – FCC §15.247(d); RSS-Gen ............................................. 12 5.1.1 Antenna Conducted Spurious Emissions Test Procedure ...................................................... 12 5.2 Antenna Conducted Spurious Emissions Test Results .............................................................. 12 6 Power Spectral Density – FCC §15.247(e); RSS-210 §A8.2 .............................................................. 15 6.1 Power Spectral Density Test Procedure .....................................................…

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Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 47 of 57 Appendix N: Test Photographs Photograph 3: Radiated Testing – Front View Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 48 of 57 Photograph 4: Radiated Testing – Rear View Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 49 of 57 Photograph 5: Conducted AC Testing – Front View Rhein Tech Laboratories, Inc. Client: Sutron Corp. 360 Herndon Parkway Model #: 6461-1311-1 Suite 1400 Standards: FCC 15.247/IC RSS-210 Herndon, VA 20170 ID’s: HDB-6461-1311-1/1088A-646113111 http://www.rheintech.com Report #: 2014075 Page 50 of 57 Photograph 6: Conducted AC Testing – Rear View