2AZIU21-2374Sensing Unit

1 | P a g e D-001517 rev 00 1.1 The case is made of a recyclable ABS-PC blended material for high strength. 1.2 The instrument, including the USB port, is rated to IP65 for Ingress Protection from dust and water. 1.3 The case includes a breathable membrane to avoid any pressurization or condensation within the case while maintaining IP65 protection. 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. Changes or modifications not expressly approved by Alcotek, Inc. for compliance could void the user's authority to operate the equipment. NOTE: 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 pro-vide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not in-stalled 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 or more 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. FCC Radiation Exposure Statement “This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment is in direct contact with the body of the user under normal operating conditions. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.” 2 | P a g e D-001517 rev 00 1.4 The instrument is equipped with an internal Lithium-ion rechargeable battery. The battery may be charged through the USB port. 1.5 The instrument may communicate with other devices through the USB port. 1.6 The instrument is equipped with a wireless (BLE) transmit and receive capability, including a built-in antenna. 3.1 TURN ON: Hold down until the red LED flashes, then release switch. 3.2 A slowly flashing green LED indicates the instrument is ON. 3.3 TURN OFF: Hold down until the red LED flashes once, and after a small delay, flashes a second time; then release switch. NOTE: Each of the red LED flashes may occur when the green LED is on or off. 3.4 No LED indicates the instrument is OFF. 4.1 When the instrument is ON as in 3.2 above, it is in a default mode: 4.1.1 The instrument is collecting position data from the internal sensor. Indicator LED Window ON/OFF Switch Function Switch 3 | P a g e D-001517 rev 00 4.1.2 The instrument is filing position data every 250 msecs to an internal flash drive. The instrument stores data using a FIFO process and can store over eleven hours of continuous position data before overwriting oldest data. 4.1.3 The instrument is NOT advertising for a BLE connection. 4.2 TARE POSITION SENSOR: Hold down until the red LED flashes once, and after a small delay, flashes a second time; then release switch. The unit will display a burst of red LED flashes confirming that the tare operation has been successful. Then the slowly flashing green LED will return indicating normal operation as described in 4.1 above. 4.3 Toggle filing ON/OFF: Hold down until the red LED flashes once. 4.4 Toggle BLE Advertising ON/OFF: Hold down until the red LED flashes once. 5.1 Turn Sensing Unit ON to get slowly flashing green LED as in 3.1 above. 5.2 Turn Operator Interface ON. 5.3 Hold down until the red LED flashes once. This turns on BLE advertising from the Sensing Unit. 5.4 Press on Operator Interface until one line appears on the display, then release. 5.5 Angles should begin appearing on the Operator Interface that represent the position of the Sensing Unit in real time. 5.6 See Operating Manual for Operator Interface for more details. 6.1 With the Sensing Unit ON, plug into USB cable. The Windows directory view should appear: Enter (Select) NOTE: If Sensing Unit is plugged in while OFF, Windows may display this message: “USB Device Not Recognized.” Turn unit ON to get screen at left. 4 | P a g e D-001517 rev 00 6.2 Select “Open folder to view files” to see something like below. The date/time stamp shown inside the various .DAT files is the relevant one. The date/time stamp shown for the .CFG file is either the date the file was originally created offline or the date the file was edited and saved under Windows, whichever is the most recent. 6.3 Files may be copied to some other folder or device. 6.4 Each .DAT file holds up to 10 minutes of data. FILE0001.DAT holds first 10 minutes of data after data filing was turned on. FILE0002.DAT holds next 10 minutes of data, and so on. 6.5 .DAT files may be deleted but when data filing begins again, it will start with the next sequential file name e.g. FILE0008.DAT in the example above. 6.6 Each new .DAT file will always be named in an ascending sequence up until FILE9999.DAT, at which point file naming will begin again at FILE0001.DAT. 6.7 If the Sensing Unit was turned off, or data filing was turned off, during one of the 10 minute increments mentioned in 6.4, that file will be saved as a partial and when filing resumes, a new file will be begun. 6.8 SETUP.CFG is the settings file for the instrument. This file may be edited and re-saved to the Sensing Unit to change the settings, and thus the operation. 6.9 NOTE: “Show hidden files” must be turned on in Windows E…

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150 Hanley Industrial Court, Saint Louis, Missouri 63144 phone 314.644.3244 fax 314.644.4308 www.alcotek.com ® Authority to Act as Agent Date: March 28, 2021 American Certification Body, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 To Whom It May Concern: D.L.S. Electronic Systems, Inc is authorized to act on our behalf, until otherwise notified, for applications to American Certification Body, Inc. (ACB). We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. We also declare that the information provided to the FCC is true and correct to the best of our knowledge (47 CFR 2.911(d)) and we have been informed of the grantee responsibilities (47 CFR 2.909) with regard to certified equipment. Thank you, Agency Agreement Expiration Date: ___March 28, 2022__ By: __________________________ KARL R WOLF (Signature) (Print name) Title: PRESIDENT On behalf of: ALCOTEK, INC. (Company Name) Telephone: 314-644-3244

150 Hanley Industrial Court, Saint Louis, Missouri 63144 phone 314.644.3244 fax 314.644.4308 www.alcotek.com ® Request for Confidentiality Date: April 16, 2021 Subject: Confidentiality Request for: FCC ID: 2AZIU21-2374 Pursuant to FCC 47 CFR 0.457(d) and 0.459 the applicant requests that a part of the subject FCC application be held confidential. Type of Confidentiality Requested Exhibit ☐ Short Term ☒ Permanent Block Diagrams ☒ Short Term External Photos ☒ Short Term ☐ Permanent Internal Photos ☐ Short Term ☒ Permanent Operation Description/Theory of Operation ☐ Short Term ☐ Permanent Parts List & Placement/BOM ☐ Short Term ☐ Permanent Tune-Up Procedure ☐ Short Term ☒ Permanent Schematics ☒ Short Term Test Setup Photos ☒ Short Term ☐ Permanent User’s Manual Alcotek, Inc. has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality: The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality: The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify ACB in the event information regarding the product or the product is made available to the public before the requested period has expired. ACB will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-1705. Sincerely, By: __________________________ ________________________ (Signature/Title) (Print name)

External Photographs Alcotek Inc. TILT Angle Sensor F-000410-01 Sensing Unit Face (Top) of EUT Back (Bottom) of EUT Alcotek Inc. TILT Angle Sensor F-000410-01 Sensing Unit Side of EUT Side of EUT (USB Connector)

Membrane, Tilt, Sensor Tilt 1 OF 3 SIL 5/06/2020 1:1 .007 Clear Marnot XL Advanced PETAdhesive: 3M #7956 Title: Date: Originator: Sheet: Scale: Tolerance: Material: Size: First Used: Part: A ECN: Init: Date: Rev: Description: ALCOTEK, INC. 1. “Wireless Connectivity” Font: Arial 6pt2. “FCC ID: 2AZIU21-2374” Font: Arial 6pt3. “Sensing Unit” Font: Arial 10pt4. Background: PANTONE SIGNAL RED 485 C5. Fonts and borders: PANTONE BLACK6. Void areas are clear membrane7. Copy and Background printed Subsurface8. UV Texture applied overall surface side (Except clear window) A 5/6/2020 Release 2261 SL I SW00038-01 B 4/9/2021 Updtd inst. & mtl,added 2394 SL FCC #, switch position Wireless Connectivity FCC ID: 2AZIU21-2374 I Wireless Connectivity FCC ID: 2AZIU21-2374 Sheet 3 of 3 LABEL, MEMBRANESWITCH ASSEMBLY RECESS IN CASE TOP CASE TOP HALF CASE BOTTOM HALF NOTE: LABEL ATTACHED TO CASE WITH PERMANENT ADHESIVE 3M#7956 POSITION LABEL ASSEMBLY

Internal Photographs Alcotek Inc. TILT Angle Sensor F-000410-01 Sensing Unit Bottom of PCB with battery Bottom of PBC with Battery Removed Internal Photographs Alcotek Inc. TILT Angle Sensor F-000410-01 Sensing Unit Inside – Bottom of Assembly Internal Photographs Alcotek Inc. TILT Angle Sensor F-000410-01 Sensing Unit Inside – Top of Assembly Internal Photographs Alcotek Inc. TILT Angle Sensor F-000410-01 Sensing Unit Top of PC Board Internal Photographs Alcotek Inc. TILT Angle Sensor F-000410-01 Sensing Unit Side of PC Board

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166 South Carter, Genoa City, WI 53128 Company: Alcotek, Inc. Model Tested: F-000410-01 Sensing Unit Report Number: 25983 rev2.1 Project Number: 11373 i.Cover Page Code of Federal Regulations 47 Part 15 – Radio Frequency Devices Subpart C – Intentional Radiators Section 15.247 Operation within the bands 902 - 928 MHz, 2400 - 2483.5 MHz, 5725 - 5875 MHz, and 24.0 - 24.25 GHz. THE FOLLOWING MEETS THE ABOVE TEST SPECIFICATION FCC ID: 2AZIU21-2374 F ormal Name: TILT Kind of Equipment: Bluetooth Low Energy (BLE V5.0) Angle Sensor: handheld, attachable, mountable F requency Range: 2402 – 2480 MHz Test Configuration: Table top, tested in three orthogonal positions M odel Number(s): F-000410-01 Sensing Unit Model(s) Tested: F-000410-01 Sensing Unit Serial Number(s): P0200278 D ate of Tests: February 16 th through March 4 th , 2021 T est Conducted for: Alcotek, Inc. 150 Hanley Ind. Ct. St. Louis, MO 63144, USA NOTICE: The test report contains test data, equipment lists, photographs and/or other information regarding only the sample provided by the client for testing. This test report shall not be used to claim product approval or endorsement by any governmental, regulatory, or accrediting agency. Please see the "Description of Test Sample" page listed inside of this report. © Copyright 1983 - 2021 D.L.S. Electronic Systems, Inc. COPYRIGHT NOTICE This report must not be reproduced (except in full), without the approval of D.L.S. Electronic Systems, Inc. 1 of 101Report #25983 rev2.1 166 South Carter, Genoa City, WI 53128 Company: Alcotek, Inc. Model Tested: F-000410-01 Sensing Unit Report Number: 25983 rev2.1 Project Number: 11373 ii. Signature Page SIGNATURE PAGE Report By: Craig Brandt Test Engineer Reviewed By: William Stumpf OATS Manager Approved By: Brian Mattson General Manager 2 of 101Report #25983 rev2.1 166 South Carter, Genoa City, WI 53128 Company: Alcotek, Inc. Model Tested: F-000410-01 Sensing Unit Report Number: 25983 rev2.1 Project Number: 11373 iii. Table of Contents Table of Contents i. Cover Page .......................................................................................................................................1 ii. Signature Page .................................................................................................................................2 iii. Table of Contents .............................................................................................................................3 iv. ANAB Certificate of Accreditation .................................................................................................4 1.0 Summary of Test Report ..................................................................................................................5 2.0 Introduction ......................................................................................................................................6 3.0 Test Facilities ...................................................................................................................................6 4.0 Description of Test Sample ..............................................................................................................6 5.0 Test Equipment ................................................................................................................................8 6.0 Test Arrangements .........................................................................................................................10 7.0 Test Conditions ..............................................................................................................................11 8.0 Modifications Made to EUT for Compliance ................................................................................11 9.0 Additional Descriptions .................................................................................................................11 10.0 FCC 15.31(e) Supply Voltage Requirement statement..................................................................12 11.0 FCC 15.203 Antenna Requirement statement ...............................................................................12 12.0 Results ............................................................................................................................................13 13.0 Conclusion .....................................................................................................................................13 Section A – Measurement Data .................................................................................................................14 1.0 Duty Cycle of Test Unit ............................................................................................................ 14 2.0 DTS Bandwidth (6 dB bandwidth) ........................................................................................... 17 3.0 Peak Output Power – Radiated ................................................................................................. 21 4.0 Peak Power Spectral Density .................................................................................................... 25 5.0 Emissions in Non-Restricted Frequency Bands – Radiated ..................................................... 27 5.1 Non-Restricted Band Emissions in the Vertical Polarization ............................................... 28 5.1(a) 1 – 25 GHz: Low Channel – 2402 MHz ..................................................................... 28 5.1(b) 1 – 25 GHz: Middle Channel – 2440 MHz ................................................................. 35 5.1(c) 1 – 25 GHz: High Channel – 2480 MHz .................................................................... 42 5.1(d) 30 – 1000 MHz: Low, Middle, & High Channels ...................................................... 48 5.2 Non-Restricted Band Emissions in the Horizontal Polarization ........................................... 50 5.2(a) 1 – 25 GHz: Low Channel – 2402 MH…

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TILT Bluetooth Low Energy Angle Sensor Alcotek, Inc. Model: F-000410-01 Sensing Unit Setup Photos Company: Alcotek, Inc. Model: F-000410-01 Sensing Unit Name: TILT Bluetooth Low Energy Angle Sensor Date: 02-22-2021 Photo Description: Radiated Pre-scan: 200-1000 MHz (Pre-scan search: No Radiated Emissions detected from 30 to 1000 MHz) TILT Bluetooth Low Energy Angle Sensor Alcotek, Inc. Model: F-000410-01 Sensing Unit Setup Photos Company: Alcotek, Inc. Model: F-000410-01 Sensing Unit Name: TILT Bluetooth Low Energy Angle Sensor Date: 02-22-2021 Photo Description: Radiated Pre-scan: 200-1000 MHz (Pre-scan search: No Radiated Emissions detected from 30 to 1000 MHz) TILT Bluetooth Low Energy Angle Sensor Alcotek, Inc. Model: F-000410-01 Sensing Unit Setup Photos Company: Alcotek, Inc. Model: F-000410-01 Sensing Unit Name: TILT Bluetooth Low Energy Angle Sensor Date: 02-23-2021 Photo Description: Radiated: 1-18 GHz TILT Bluetooth Low Energy Angle Sensor Alcotek, Inc. Model: F-000410-01 Sensing Unit Setup Photos Company: Alcotek, Inc. Model: F-000410-01 Sensing Unit Name: TILT Bluetooth Low Energy Angle Sensor Date: 02-23-2021 Photo Description: Radiated: 1-18 GHz – Position 1 TILT Bluetooth Low Energy Angle Sensor Alcotek, Inc. Model: F-000410-01 Sensing Unit Setup Photos Company: Alcotek, Inc. Model: F-000410-01 Sensing Unit Name: TILT Bluetooth Low Energy Angle Sensor Date: 02-23-2021 Photo Description: Radiated: 1-18 GHz – Position 2 TILT Bluetooth Low Energy Angle Sensor Alcotek, Inc. Model: F-000410-01 Sensing Unit Setup Photos Company: Alcotek, Inc. Model: F-000410-01 Sensing Unit Name: TILT Bluetooth Low Energy Angle Sensor Date: 02-23-2021 Photo Description: Radiated: 1-18 GHz – Position 3 TILT Bluetooth Low Energy Angle Sensor Alcotek, Inc. Model: F-000410-01 Sensing Unit Setup Photos Company: Alcotek, Inc. Model: F-000410-01 Sensing Unit Name: TILT Bluetooth Low Energy Angle Sensor Date: 02-23-2021 Photo Description: Radiated: Back TILT Bluetooth Low Energy Angle Sensor Alcotek, Inc. Model: F-000410-01 Sensing Unit Setup Photos Company: Alcotek, Inc. Model: F-000410-01 Sensing Unit Name: TILT Bluetooth Low Energy Angle Sensor Date: 02-16-2021 Photo Description: Radiated: 1-18 GHz – Substitution Setup TILT Bluetooth Low Energy Angle Sensor Alcotek, Inc. Model: F-000410-01 Sensing Unit Setup Photos Company: Alcotek, Inc. Model: F-000410-01 Sensing Unit Name: TILT Bluetooth Low Energy Angle Sensor Date: 02-23-2021 Photo Description: Radiated: 18-25 GHz (No Radiated Emissions detected from 18 to 25 GHz) TILT Bluetooth Low Energy Angle Sensor Alcotek, Inc. Model: F-000410-01 Sensing Unit Setup Photos Company: Alcotek, Inc. Model: F-000410-01 Sensing Unit Name: TILT Bluetooth Low Energy Angle Sensor Date: 03-04-2021 Photo Description: AC Line Conducted Emissions - Front TILT Bluetooth Low Energy Angle Sensor Alcotek, Inc. Model: F-000410-01 Sensing Unit Setup Photos Company: Alcotek, Inc. Model: F-000410-01 Sensing Unit Name: TILT Bluetooth Low Energy Angle Sensor Date: 03-04-2021 Photo Description: AC Line Conducted Emissions - Back