2AFTLSS2Wall Sensor

Changes or modifications not expressly approved by Ecovent could void the user’s authority to operate the equipment. 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: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. WARNING! This equipment complies with FCC’s and IC’s RF radiation exposure limits set forth for an uncontrolled environment under the following conditions: This equipment should be installed and operated such that a minimum separation distance of 20cm is maintained between the radiator (antenna) & user’s/nearby person’s body at all times. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This device complies with Industry Canada’s licence-exempt RSSs Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. '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. This Ecovent product contains open source software. For licensing, compliance, and other important information, please visit https://www.ecoventsystems.com/product-info Use the tablet to add sensors and vents, one room at a time. ROOM-BY-ROOM INSTALLATION Mon - Sat: 10am - 10pm, Sun: 10am - 6pm (Eastern) 5 min or Our app will guide you through the complete install, step by step. Use your mobile device. Search for "Ecovent" Use the included tablet. It comes pre-loaded with the Ecovent app. 1 LAUNCH APP

Request for Confidentiality for FCC 09/07/15 To: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046-1609 Curtis-Straus LLC TCB One Distribution Center Circle, #1 Littleton, MA 02702 Re: Confidentiality Request Gentlemen: This letter is to comply with 47 CFR 0.457(d)(2) pertaining to confidential material. Ecovent requests that the following documents regarding this submission for FCC ID: 2AFTLSH1, 2AFTLSS2, and 2AFTLSV1 be kept confidential: 1. Schematics 2. Block Diagram 3. Circuit/Technical Description The material above contains technical data, which would customarily be guarded from competitors. Pursuant to Public Notice DA 04-1705, Ecovent requests SHORT-TERM CONFIDENTIALITY for the following information until 180 days after the grant date of equipment authorization in order to ensure sensitive business information remains confidential until marketing of the device: External Photos Internal Photos Test Setup Photos User’s Manual Sincerely, _______________________ Robert Kim Director of Electrical Engineering 12/09/15

Letter of Agency for FCC 09/07/15 Agent’s Authorization Letter I, an officer of Ecovent, do hereby authorize, until further notice, Chris Reynolds of Curtis-Straus LLC, One Distribution Center Circle, #1, Littleton, MA 01460, to act on our behalf in dealings before the Federal Communications Commission with respect to all matters relating to equipment authorizations under 47 CFR. This authorization includes, but is not limited to, the signing of Form 731. I certify that no party (as defined in 47 CFR 1.2002) to this application, including myself, is subject to a denial of federal benefits, that include FCC benefits, pursuant to section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C., 853A. Certified By: _______________________ Robert Kim Director of Electrical Engineering 12/09/15

MN:SS2 MN:SS2 MN:SS2 4 MN:SS2 MN:SS2 MN:SS2 MN:SS2 MN:SS2 MN:SS2 MN:SS2

Modification photo

Label material and adhesive information Wall Sensor label location Control Hub label location Vent label location 1” 2” 1” 1” 1” 1” Control Hub label Vent label Wall Sensor label

MN:SS2 MN:SS2 MN:SS2 MN:SS2

Prediction of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 where: S = power density P = power input to the 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 Wall Sensor (915 MHz) Maximum peak output power at the antenna terminal: 7.60 (dBm) Maximum peak output power at the antenna terminal: 5.754399373 (mW) Antenna gain(typical): -2 (dBi) Maximum antenna gain: 0.630957344 (numeric) Prediction distance: 20 (cm) Prediction frequency: 904 (MHz) MPE limit for uncontrolled exposure at prediction frequency: 0.6 (mW/cm^2) Power density at prediction frequency: 0.000722 (mW/cm^2) Maximum allowable antenna gain: 27.19421106 (dBi) Wall Sensor (2.4GHz) Maximum peak output power at the antenna terminal: -1.46 (dBm) Maximum peak output power at the antenna terminal: 0.714496326 (mW) Antenna gain(typical): 1.7 (dBi) Maximum antenna gain: 1.479108388 (numeric) Prediction distance: 20 (cm) Prediction frequency: 2402 (MHz) MPE limit for uncontrolled exposure at prediction frequency: 1 (mW/cm^2) Power density at prediction frequency: 0.000210 (mW/cm^2) Maximum allowable antenna gain: 38.47269855 (dBi) (power density) (MPE limit) (pwr density / MPE limit) mW/cm^2 mW/cm^2 numeric 915 MHz radio 0.000722 0.6000 0.001204 2.4GHz radio 0.000210 1.0000 0.000210 SUM (Power Density / Limit): 0.001414 OVERALL LIMIT (numeric): 1.0 RESULT: Pass 2 4 R PG S p =

Curtis-Straus LLC is accredited by the American Association for Laboratory Accreditation for the specific scope of accreditation under Certificate Number 1627-01. This report may contain data which is not covered by the A2LA accreditation. ____________________________________________________________ Curtis-Straus LLC, a wholly owned subsidiary of BV CPS One Distribution Center Circle, #1  Littleton, MA  TEL (978) 486-8880  FAX (978) 486-8828 page 1 of 31 Test Report Curtis-Straus LLC, a wholly owned subsidiary of BV CPS Report No EP3491-2 Client ecoVent Robert Kim Address 24 Cambridge St, Suite 6 Charlestown, MA 02129 Phone 857-204-4466 Items tested WALL SENSOR FCC ID IC ID 2AFTLSS2 20783-SS2 FRN 0024870743 Equipment Type Part 15.247 Digitally Modulated Equipment Code DTS FCC/IC Rule Parts 47 CFR 15.247, RSS-247 Issue 1 Test Dates December 2 - 4, 7 and 9, 2015 Results As detailed within this report Prepared by Tuyen A. Truong – Test Engineer Authorized by Christopher Reynolds – EMC Supervisor Issue Date 1/18/2016 Conditions of Issue This Test Report is issued subject to the conditions stated in the ‘Conditions of Testing’ section on page 30 of this report. Test Report for ecoVent  Report No. EP3491-2 January 22, 2016 ______________________________________________________________________ ____________________________________________________________ Curtis-Straus LLC, a wholly owned subsidiary of BV CPS One Distribution Center Circle, #1  Littleton, MA  TEL (978) 486-8880  FAX (978) 486-8828 page 2 of 31 Contents Contents .................................................................................................................................. 2 Summary ................................................................................................................................. 3 Test Methodology .................................................................................................................... 4 Product Tested - Configuration Documentation ....................................................................... 5 Statement of Conformity .......................................................................................................... 6 Modifications Required for Compliance ................................................................................... 7 Test Results ......................................................................................................................... 8 Bandwidth ............................................................................................................................ 8 Fundamental Emission Output Power ................................................................................ 11 Radiated Spurious Emissions ............................................................................................ 14 Conducted Spurious Emissions ......................................................................................... 18 Power Spectral Density ...................................................................................................... 22 AC Line Conducted Emissions ........................................................................................... 25 Occupied Bandwidth .......................................................................................................... 26 Measurement Uncertainty .................................................................................................. 29 Conditions Of Testing ............................................................................................................ 30 Form Final Report REV 7-20-07 (DW) Test Report for ecoVent  Report No. EP3491-2 January 22, 2016 ______________________________________________________________________ Issue No. Reason for change Date Issued 1 Original Release January 22, 2016 _____________________________________________________________ Curtis-Straus LLC, a wholly owned subsidiary of BV CPS One Distribution Center Circle, #1  Littleton, MA  TEL (978) 486-8880  FAX (978) 486-8828 page 3 of 31 Summary This test report supports an application for certification of a transmitter operating pursuant to 47 CFR 15.247. The product is the WALL SENSOR. It is a digitally modulated transmitter that operates from 2402 to 2480 MHz frequency range. Product was tested with an on board antenna with a gain of +1.7dBi. We found that the product met the above requirements with modification (see Modification Required for Compliance section on page 7 for details). The test samples were received in good condition. Please note that the EUT also contained another radio which ran from 904 to 926 MHz frequency range. During testing, both radios were set to run simultaneously. Test Report for ecoVent  Report No. EP3491-2 January 22, 2016 ______________________________________________________________________ _____________________________________________________________ Curtis-Straus LLC, a wholly owned subsidiary of BV CPS One Distribution Center Circle, #1  Littleton, MA  TEL (978) 486-8880  FAX (978) 486-8828 page 4 of 31 Test Methodology Radiated emission testing was performed according to DTS guidance document 558074D01 v03r03 specified in FCC Guidance for performing compliance measurement on DTS operating under section 15.247, April 19, 2013 and ANSI C63.10 (2013). Radiated Emissions were maximized by rotating the device around its axes as well as varying the test antenna’s height and polarity. The device antenna was not maximized separately. Conducted emissions testing at the antenna port was performed, as required by rule section. AC Mains conducted emissions testing was performed with a 50Ω/50μH. Operating channel frequency = 2402 MHz Operating channel frequency = 2440 MHz Operating channel frequency = 2480 MHz The following bandwidths were used during radiated spurious and line conducted emissions. Frequency RBW VBW 0.15-30MHz 9kHz 30kHz 30-1000MHz 120kHz 1MHz 1-25GHz 1MHz 3MHz Test Repo…

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Curtis-Straus LLC is accredited by the American Association for Laboratory Accreditation for the specific scope of accreditation under Certificate Number 1627-01. This report may contain data which is not covered by the A2LA accreditation. ____________________________________________________________ Curtis-Straus LLC, a wholly owned subsidiary of BV CPS One Distribution Center Circle, #1  Littleton, MA  TEL (978) 486-8880  FAX (978) 486-8828 page 1 of 30 Test Report Curtis-Straus LLC, a wholly owned subsidiary of BV CPS Report No EP3491-1 Client ecoVent Robert Kim Address 24 Cambridge St, Suite 6 Charlestown, MA 02129 Phone 857-204-4466 Items tested WALL SENSOR FCC ID IC ID 2AFTLSS2 20783-SS2 FRN 0024870743 Equipment Type Part 15.247 Digitally Modulated Equipment Code DTS FCC/IC Rule Parts 47 CFR 15.247, RSS-247 Issue 1 Test Dates December 2, 3, 7 and 9, 2015 Results As detailed within this report Prepared by Tuyen A. Truong – Test Engineer Authorized by Christopher Reynolds – EMC Supervisor Issue Date 1/18/2016 Conditions of Issue This Test Report is issued subject to the conditions stated in the ‘Conditions of Testing’ section on page 29 of this report. Test Report for ecoVent  Report No. EP3491-1 January 22, 2016 ______________________________________________________________________ ____________________________________________________________ Curtis-Straus LLC, a wholly owned subsidiary of BV CPS One Distribution Center Circle, #1  Littleton, MA  TEL (978) 486-8880  FAX (978) 486-8828 page 2 of 30 Contents Contents .................................................................................................................................. 2 Summary ................................................................................................................................. 3 Test Methodology .................................................................................................................... 4 Product Tested - Configuration Documentation ....................................................................... 5 Statement of Conformity .......................................................................................................... 6 Modifications Required for Compliance ................................................................................... 7 Test Results ......................................................................................................................... 8 Bandwidth ............................................................................................................................ 8 Fundamental Emission Output Power ................................................................................ 11 Radiated Spurious Emissions ............................................................................................ 14 Conducted Spurious Emissions ......................................................................................... 17 Power Spectral Density ...................................................................................................... 21 AC Line Conducted Emissions ........................................................................................... 24 Occupied Bandwidth .......................................................................................................... 25 Measurement Uncertainty .................................................................................................. 28 Conditions Of Testing ............................................................................................................ 29 Form Final Report REV 7-20-07 (DW) Test Report for ecoVent  Report No. EP3491-1 January 22, 2016 ______________________________________________________________________ Issue No. Reason for change Date Issued 1 Original Release January 22, 2016 _____________________________________________________________ Curtis-Straus LLC, a wholly owned subsidiary of BV CPS One Distribution Center Circle, #1  Littleton, MA  TEL (978) 486-8880  FAX (978) 486-8828 page 3 of 30 Summary This test report supports an application for certification of a transmitter operating pursuant to 47 CFR 15.247. The product is the WALL SENSOR. It is a digitally modulated transmitter that operates from 904 to 926MHz frequency range. Product was tested with an on board antenna with a gain of -2dBi. We found that the product met the above requirements with modification (see Modification Required for Compliance section on page 7 for details). The test samples were received in good condition. Please note that the EUT also contained another radio (BLE) which ran at 2.4 GHz range. During testing, both radios were set to run simultaneously. Test Report for ecoVent  Report No. EP3491-1 January 22, 2016 ______________________________________________________________________ _____________________________________________________________ Curtis-Straus LLC, a wholly owned subsidiary of BV CPS One Distribution Center Circle, #1  Littleton, MA  TEL (978) 486-8880  FAX (978) 486-8828 page 4 of 30 Test Methodology Radiated emission testing were performed according to DTS guidance document 558074D01 v03r03 specified in FCC Guidance for performing compliance measurement on DTS operating under section 15.247, April 19, 2013 and ANSI C63.10 (2013). Radiated Emissions were maximized by rotating the device around its axes as well as varying the test antenna’s height and polarity. The device antenna could not be maximized separately. Conducted emissions at the antenna port were performed, as required by rule section. . AC Main conducted emission testing was performed with a 50Ω/50μH. Operating channel frequency = 904 MHz Operating channel frequency = 915 MHz Operating channel frequency = 926 MHz The following bandwidths were used during radiated spurious and line conducted emissions. Frequency RBW VBW 0.15-30MHz 9kHz 30kHz 30-1000MHz 120kHz 1MHz 1-10GHz 1MHz 3MHz Test Report for ecoVent  Report…

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MN:SS2 Conducted EMI at the Antenna Port – (915MHz radio) Conducted EMI at the Antenna Port – (2.4GHz radio) MN:SS2 Radiated Emissions – 30 to 1000 MHz Radiated Emissions – 1 to 6GHz MN:SS2 Radiated Emissions – 6 to 18GHz Radiated Emissions – 18 to 25GHz MN:SS2 AC Mains Conducted Emissions – 0.15 to 30 MHz (Front) AC Mains Conducted Emissions – 0.15 to 30 MHz (Rear)