W9Z-A4MK2HOMEDigital Transmission Transmitter

NEW ARANET — MAKING SENSORS WIRELESS Monitors air quality at your home, school, office or any other indoor private or public spaces. USER MANUAL Aranet4 HOME, Aranet4 PRO The Aranet4 sensor is a battery powered CO ² meter with additional measurements of temperature, relative humidity and atmospheric pressure. * The device is suitable for monitoring the CO ² level at home, in school, office or any other indoor environment. Measurement data is displayed on a power-efficient e-ink screen allowing for long battery life. Additionally the device can provide visual and sound notifications in case of the CO ² concentration becomes unhealthy. The high concentration level of 1400 ppm (parts per million) – level typically associated with complaints of drowsiness and poor air quality. By using the Aranet4 app on your smart device it is possible to wirelessly access real-time data and up to one week of historical measurement data. The app also allows you to configure the Aranet4 device. The Aranet4 app supports connection of several Aranet4 sensors to monitor their parameters remotely from a single smart device. Additionally up to 100 Aranet4 PRO devices can be connected to the Aranet PRO base station. Refer to the chapter Using Aranet4 device with the Aranet PRO base station. Data transmission interval: 1, 2, 5 or 10 minutes. Default measurement interval is set to 5 minutes. Aranet4 uses the nondispersive infrared (NDIR) sensor to measure the concentration of CO ² . The CO ² gas in the chamber absorbs infrared light and this absorption is measured by the sensor. The less light passes through – the higher the CO ² concentration. The CO ² gas absorbs only a specific wavelength of the light therefore an optical filter is used. Gas inGas out DetectorIR lamp Optical filter * Atmospheric pressure data measurements are available only on the Aranet4 app. More information in chapter How to pair the Aranet4 to my smart device. About the Aranet4 device Good (Green) Average (Yellow) Unhealthy (Red) Aranet4 User Manual 1 5 CO ² threshold level indication. Green represents normal CO ² level (below 1000 ppm) Yellow represents average CO ² level (1000 to 1400 ppm) Red represents high CO ² level (above 1400 ppm) CO ² calibration mode indication. Symbol “A” is displayed when calibration is set to automatic. No letter is displayed when calibration is set to manual mode. 76 The PRO version of the product (can be wirelessly connected to Aranet PRO base station & Aranet Cloud) 9 8 Battery level. Adjustable CO ² thresholds that can be set using the Aranet4 app. 2 8 1 4 3 6 9 7 5 1234 Temperature of the air in Celsius or Fahrenheit. Refer to the switch positions of the Aranet4 in chapter Switch positions explained. Relative humidity of the air (RH %). CO ² concentration level in ppm (parts per million). Alarm status. The speaker symbol is visible when alarm function is activated. The alarm settings can be adjusted using the Aranet4 app. The Aranet4 sensor screen explained Aranet4 User Manual 2 The inverted screen alerts when CO ² concentration is too high and unhealthy. The calibration progress. Do not remove batteries during firmware upgrade. The battery is exhausted. Replace the batteries. Frost can damage the sensor. The recommended operating temperature of the sensor is 0 °C to 50 °C (32 °F to 122 °F). Pin code representation, when pairing device with smartphone trough Aranet4 app via Bluetooth The Aranet4 device is calibrated at the factory. However, the user can perform CO ² calibration manually when needed. During the manual calibration the Aranet4 device must be exposed to fresh air (about 420 ppm of CO ² ) and the environment should be stable (not changing). Maintain a distance of at least 1 meter from the device during the calibration process. To start the manual CO ² calibration, change the position of the switch (see next chapter Switch positions explained) from MANUAL to AUTO and then back to MANUAL (maintain maximum of 1 second between each movement). The calibration progress will be displayed on the screen of the device. In case of a calibration failure message, make sure that the environment requirements are met and repeat the process from the beginning. Manual calibration can be done using the Aranet4 app as well. In case of automatic calibration mode, the Aranet4 device needs to be exposed to a fresh air at around 420 ppm (for instance, outdoors or room with good air exchange) at least 8 hours each month. CO ² calibration Aranet4 User Manual 3 Bluetooth / 0 – enable or disable (0) the Bluetooth connectivity. Enable/disable device connectivity to Aranet radio (available only for the PRO version of the product.). Refer to chapter Using Aranet4 device with the Aranet PRO base station. Temperature units – switch between either Celsius or Fahrenheit degrees. AUTO / MANUAL – switch the CO ² calibration mode to either manual (default position) or automatic mode. Use MANUAL calibration mode in case you are not certain which mode to use. The positions of the configuration switches have the following meaning: AUTO MANUAL °C °FO (OFF) O (OFF) The Aranet4 device has four small configuration switches that allow the user to adjust the preferences of the device. To access the configuration switches, open the cover of the battery compartment on the back of the device. While batteries remain inserted, adjust the switch position (up or down) using the pin tool that is supplied with the Aranet4 device (or any other suitable thin tool). Switches can be adjusted while batteries are removed as well, but note that if you remove the batteries, the measurement history will be erased from Aranet4 memory. The changed preference setting will be enabled once the batteries are inserted back in. Switch positions explained Switch tool can be found in Aranet4 Quick Start Guide english version Aranet4 User Manual 4 Connect your smartphone with the Aranet4 device via Bluetooth by using iOS or Android (access to device’s location should be …

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SAF Tehnika AS VAT No.: LV40003474109 24a, Ganibu dambis Phone: +371 67046840 Riga, LV-1005, Latvia Fax: +371 67046840 www.saftehnika.com E-mail: [email protected] Date: May 26, 2021 Federal Communications Commission Equipment Approval Services P.O. Box 35815 Pittsburgh, PA 15251-3315 Applicant: Company Name: SAF Tehnika AS Company Address: 24a, Ganibu dambis Riga, Latvia, LV-1005 Equipment: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Re: Compliance Attestation To whom it may concern The undersigned does hereby attest that SAF Tehnika AS will continue to apply processes and procedures to ensure compliance with 47CFR paragraph 2 regarding products regulated under Supplier's Declaration of Conformity. Including compliance as directed for Unintentional Radiator Equipment procedures for digital equipment and peripherals as applicable. Sincerely Aivis Danovskis Product Manager

File: A4MK2HOME Conf Request Letter Page 1 of 2 June 1, 2021 Timco Engineering Inc. 849 NW State Road 45 Newberry, FL 32669 Federal Communications Commission Equipment Approval Services P.O. Box 35815 Pittsburgh, PA 15251-3315 Applicant: SAF Tehnika AS 24a, Ganibu dambis, Riga Latvia LV-1005 FCC ID: W9Z-A4MK2HOME FCC Rules: 15.247 Digital Transmission System Dear Sirs: SAF Tehnika AS requests that the material in the Schematics, Block Diagram, Operational Descriptions, and Tune Up Procedure be withheld from public disclosure pursuant to Sections 0.457 and 0.459 of the Commission’s Rules following grant of the application. In support of this request, SAF Tehnika AS submits the following: Long Term Confidential Files Include Exhibit File Schematics A4MK2HOME Conf Schem.pdf Block Diagram A4MK2HOME Conf BlkDia.pdf Operational Description A4MK2HOME Conf OpDes.pdf Tune Up Procedure A4MK2HOME Conf TunPro.pdf 1. Identification of the specific information for which confidential treatment is sought: The materials set forth in the Schematics, Block Diagram, Operational Descriptions, and Tune Up Procedure, which are segregated from the non-confidential exhibits of the application, are those for which confidentiality is sought. 2. Identification of the Commission proceeding in which the information was submitted or a description of the circumstances giving rise to the submission: The proceeding is that involving the application for equipment authorization (certification) under FCC ID: W9Z-A4MK2HOME ROGERS LABS, INC. 4405 West 259 th Terrace Louisburg, KS 66053 File: A4MK2HOME Conf Request Letter Page 2 of 2 3. Explanation of the degree to which the information is commercial or financial, or contains a trade secret or is privileged: This material includes a detailed theory of operation, circuit diagrams, (schematic diagrams) and any detail Parts List. As such, this material is treated as highly confidential business information. 4. Explanation of the degree to which the information concerns a service that is subject to competition: The material for which confidentiality is sought is employed in the design and manufacture of this transmitting equipment that is offered on a highly competitive basis. Customers for this equipment have a variety of competing sources. 5. Explanation of how disclosure of the information could result in substantial competitive harm: Disclosure would, in effect, give away the fruits of the labors of SAF Tehnika AS engineering personnel, who have designed the equipment and the manufacturing process. Disclosure would also offer competitors additional unwarranted insight into the state of the product development, thereby allowing competitors an advantage, not available to SAF Tehnika AS. 6. Identification of any measures taken by the submitting party to prevent unauthorized disclosure: The information for which confidential treatment is sought is kept confidential by SAF Tehnika AS and not made available to third parties except pursuant to non-disclosure agreements. 7. Identification of whether the information is available to the public and the extent of any previous disclosure of the information to third parties: To the knowledge of those preparing this application, the information has not been disclosed publicly heretofore. While the general theory of operation of this equipment has been the subject of numerous disclosures in industry and standards groups as well as in rule making proceedings of the FCC, the protection sought is narrowly drawn and pertains to certain specific implementations of this radio technology. 8. Justification of the period during which the submitting party asserts that the material should not be available for public disclosure: This material should not be disclosed for at least 25 years. While improvements in design are made relatively frequently, disclosure of the design information would lead to insights into both design and manufacturing techniques that could have an adverse competitive effect for many years to come. As such, it is important that the design not be made available to unauthorized persons who might attempt to use knowledge of the design to compromise the applications for which the equipment will be employed. Should you require any further information, please contact the undersigned. Thank you for your consideration in this matter. Sincerely, Scot Rogers

June 1, 2021 Timco Engineering Inc. 849 NW State Road 45 Newberry, FL 32669 Applicant: SAF Tehnika AS 24a, Ganibu dambis, Riga Latvia LV-1005 FCC ID: W9Z-A4MK2HOME Re: Short-term Confidentiality request for FCC ID: W9Z-A4MK2HOME FCC Rules: 15.247 Digital Transmission System Dear Sirs: SAF Tehnika AS requests that the following information be withheld from public disclosure pursuant to CFR47 paragraphs 0.457 and 0.459, and KDB 726920 until 45 days after the Grant of Equipment Authorization. Short-term confidential files Exhibit File External Photos A4MK2HOME Short Term Conf ExtPho.pdf Internal Photos A4MK2HOME Short Term Conf IntPho.pdf Test Setup Photos A4MK2HOME Short Term Conf TSup.pdf User Manual A4MK2HOME Short Term Conf UserMan.pdf Should you require any further information, please contact the undersigned. Thank you for your consideration in this matter. Sincerely, Scot Rogers ROGERS LABS, INC. 4405 West 259 th Terrace Louisburg, KS 66053

Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME Short Term Conf ExtPho Page 1 of 4 External photographs of equipment under test Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME Short Term Conf ExtPho Page 2 of 4 Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME Short Term Conf ExtPho Page 3 of 4 Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME Short Term Conf ExtPho Page 4 of 4

Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: 47CFR 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME LabelSmpl Page 1 of 1 Label and Placement (Note: Identifiers have letter O, M/N has numeric zero “0”) Equipment Label Placement Inside battery Compartment Equipment Label Placement Inside battery Compartment Equipment Label Placement Inside battery Compartment

SAF Tehnika AS VAT No.: LV40003474109 24a, Ganibu dambis Phone: +371 67046840 Riga, LV-1005, Latvia Fax: +371 67046840 www.saftehnika.com E-mail: [email protected] Date: May 26, 2021 Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Innovation, Science and Economic Development Canada 3701 Carling Ave., Bldg. 94 Ottawa, ON, K2H 8S2 Applicant: Company Name: SAF Tehnika AS Company Address: 24a, Ganibu dambis Riga, Latvia, LV-1005 Equipment: Aranet4 HOME FCC ID: W9Z-A4MK2HOME IC: 8855A-A4MK2HOME Label location justification Letter To whom it may concern Regarding identification label placement for this application, SAF Tehnika AS wishes to place the label on the printed circuit board in a way that it can be seen from the battery compartment due to size, aesthetics, and durability. This device is small and is exposed to the elements, which could degrade labeling over time. The equipment is sold without the batteries installed providing the end user exposure to the label before operation. This location will offer and ensure the end user opportunity to view the label before operation. The identifier label will be readily viewable each time the battery is removed or replaced. This location will help ensure the longevity of the label as this equipment may be in service in harsh environments. Sincerely Aivis Danovskis Product Manager

Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME Short Term Conf IntPho Page 1 of 2 Internal photographs of equipment under test (Antenna Location) Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME Short Term Conf IntPho Page 2 of 2

Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME RF Exclusion Page 1 of 1 SAR Test Exclusion Calculator Insert values in yellow highlighted boxes to determine SAR Exclusion Max Power 2.558586 mW Min Separation 5 mm Frequency 2.4 GHz Answer 0.8 Please also note the following: [FCC KDB quote] These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The minimum test separation distance is determined by the smallest distance from the antenna and radiating structures or outer surface. [End quote] FCC IC SAR Eclusion 4.3.1. Standalone SAR test exclusion considerations 100 MHz to 6 GHz at separation distance less than or equal to 50 mm When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Must be less than or equal to 3.0 for SAR Exclusion KDB 628591 D01 TCB Exclusion List v14 TCBs are excluded from granting if: General Population: The Answer is equal to or greater than 24 (8x threshold) Controlled Use: The Answer is equal to or greater than 60 (20x threshold) and, when published RF exposure KDB procedures are not established for SAR testing or when SAR data is not provided to support compliance.

NVLAP Lab Code 200087-0 Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: May 29, 2021 Revision 1 File: SAF Aranet4 HOME TstRpt 210416 Page 1 of 41 CFR47, PART 15C - Intentional Radiators CFR47 Paragraph 15.247 and Industry Canada RSS-247 Issue 2 and RSS-GEN Issue 5 Application For Grant of Certification Product Marketing Name (PMN): Aranet4 HOME 2402-2480 MHz (DTS) Digital Transmission System FCC ID: W9Z-A4MK2HOME IC: 8855A-A4MK2HOME SAF Tehnika AS 24a, Ganibu dambis Riga Latvia LV-1005 FCC Designation: US5305 ISED Registration: 3041A-1 Test Report Number: 210416 Test Date: April 16, 2021 Authorized Signatory: Scot D. Rogers This report shall not be reproduced except in full, without the written approval of the laboratory. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the U.S. Government. ROGERS LABS, INC. 4405 West 259 th Terrace Louisburg, KS 66053 Phone / Fax (913) 837-3214 NVLAP Lab Code 200087-0 Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: May 29, 2021 Revision 1 File: SAF Aranet4 HOME TstRpt 210416 Page 2 of 41 Tabl e of Cont ents Table of Contents TABLE OF CONTENTS .................................................................................................. 2 REVISIONS ..................................................................................................................... 4 EXECUTIVE SUMMARY ................................................................................................ 5 OPINION / INTERPRETATION OF RESULTS ............................................................... 5 EQUIPMENT TESTED .................................................................................................... 6 Equipment Function ............................................................................................................................................ 7 Equipment Configuration.................................................................................................................................... 8 APPLICABLE STANDARDS & TEST PROCEDURES .................................................. 9 APPLICATION FOR CERTIFICATION ......................................................................... 11 TESTING PROCEDURES ............................................................................................ 12 AC Line Conducted Emission Test Procedure ................................................................................................ 12 Radiated Emission Test Procedure ................................................................................................................... 12 Antenna Port Conducted Emission Test Procedure ........................................................................................ 12 Diagram 1 Test arrangement for radiated emissions of tabletop equipment ...................................................... 13 Diagram 2 Test arrangement for radiated emissions tested on Open Area Test Site (OATS) ........................... 14 Diagram 3 Test arrangement for Antenna Port Conducted emissions ............................................................... 15 TEST SITE LOCATIONS .............................................................................................. 15 UNITS OF MEASUREMENTS ...................................................................................... 16 ENVIRONMENTAL CONDITIONS................................................................................ 16 STATEMENT OF MODIFICATIONS AND DEVIATIONS ............................................. 16 INTENTIONAL RADIATORS ........................................................................................ 17 Antenna Requirements ...................................................................................................................................... 17 Restricted Bands of Operation .......................................................................................................................... 17 NVLAP Lab Code 200087-0 Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: May 29, 2021 Revision 1 File: SAF Aranet4 HOME TstRpt 210416 Page 3 of 41 Table 1 Harmonic Radiated Emissions in Restricted Bands Worst-case ........................................................... 18 Summary of Results for Radiated Emissions in Restricted Bands ................................................................ 18 AC Line Conducted EMI Procedure ................................................................................................................ 19 General Radiated Emissions Procedure ........................................................................................................... 19 Table 2 General Radiated Emissions Data ........................................................................................................ 20 Summary of Results for General Radiated Emissions .................................................................................... 20 Operation in the Band 2400 – 2483.5 MHz ...................................................................................................... 21 Figure 1 Plot of Transmitter Operation in 2402-2480 MHz Mode 1 ................................................................. 22 Figure 2 Plot of Transmitter Operation i…

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Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME Short Term Conf TSup Page 1 of 4 Test setup photographs Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME Short Term Conf TSup Page 2 of 4 Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME Short Term Conf TSup Page 3 of 4 Rogers Labs, Inc. SAF Tehnika AS S/N’s: 05128 / 05127 / 0512B / 05129/ 0512A 4405 W. 259th Terrace Model: Aranet4 HOME FCC ID: W9Z-A4MK2HOME Louisburg, KS 66053 Test: 210416 IC: 8855A-A4MK2HOME Phone/Fax: (913) 837-3214 Test to: CFR47 15C, RSS-Gen RSS-247 Date: June 1, 2021 Revision 1 File: A4MK2HOME Short Term Conf TSup Page 4 of 4