2A3I5-HFIoT-COMMBOX-IoT HF

=========================================================================== Ham-Let Group Proprietary Information – Confidential 1 IoTHF WLS Installation Guide =========================================================================== Ham-Let Group Proprietary Information – Confidential 2 CHANGE LOG Version Changes Date 1.0 First release 07 Feb 2021 1.1 Add FCC statement and Product Description 10 Jan 2022 Regulatory/compliance notices FCC Statement 1. 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. (2) This device must accept any interference received, including interference that may cause undesired operation. 2. Changes or modifications not expressly approved by the party responsible 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 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 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. To comply with RF exposure requirements, a minimum separation distance of 20mm must be maintained between the user’s body and the device, including the antenna. =========================================================================== Ham-Let Group Proprietary Information – Confidential 3 =========================================================================== Ham-Let Group Proprietary Information – Confidential 4 Product Description The IoTHF (Model:IoTHF) provides a high-quality solution for high flow applications by remotely On/Off the high flow valve . It can be controlled via IoT-let portal in web browser or Mobile App. The valve is available in air operated (normally Opened/Closed) version. IOT HF WLS Interface connection These are the items included in the package. Connection B Connection A Connection C-> Connection D InLET OutLET Communication Box =========================================================================== Ham-Let Group Proprietary Information – Confidential 5 Overall set-up & connectivity <-Connection B Connection A Connection C-> Connection D-> Connection E-> OutLET InLET Communication Box =========================================================================== Ham-Let Group Proprietary Information – Confidential 6 1. Connection A: Power Supply This is M8 Female (4-pin) Power Adapter (24V, 1A) Note: There is no Modbus RTU support when using this power adapter. Connect the M8 Female (4-pin) to communication box. Please refer to pic below: Warning! 1. After insert the Female M8 plug, do remember to tighten it. Connection A <-Connection A =========================================================================== Ham-Let Group Proprietary Information – Confidential 7 2. Connection B & C: Solenoid Connection This is the cable interface in between the communication box and the solenoid. It contains a M8 Male 4-pin to 2-pin plug. Connect the 2-pin plug into the solenoid and the M8 (Male) 4-pin to the communication box. Please refer to the picture shown: Warning! After inserting the M8 Male 4-pin plug, do remember to tighten it on the outer ring. Connection B Connection C <-Connection B Connection C-> =========================================================================== Ham-Let Group Proprietary Information – Confidential 8 3. Connection D: Antenna Connection Connect the SMA plug of the right-angle antenna to the communication box per picture shown at connection D (The Antenna is provided in the packaging.) Warning! After inserting the SMA plug, tighten the plug and set the antenna in the vertical direction. Connection D-> Antenna SMA Plug =========================================================================== Ham-Let Group Proprietary Information – Confidential 9 4. Connection E: Solenoid Air Supply The Pneumatic Inlet must be connected to the Port 1 of the solenoid per the picture below. The Pneumatic Inlet connector requires a M5 Male with a ¼” tubing (KQ2L07- M5N or KQ2H07-M5N) Warning! The solenoid requires the supplied gas pressure to be from 70PSI to 90PSI (5 to 6 BAR). 5. Green LED Status Indication LED Status Function / Behaviour Fast Blink Power on and connecting to LoRa Gateway Slow Blink Provision with IOT-LET cloud Solid ON In Operational Mode OFF Power Off Warning! If the LED remains at Slow Blink continuous for ~5mins, it may have connected in Test Mode. Please power cycle the valve again for it to join correctly. Connection E-> <- Green LED the device, including the antenna. FCC Statement 1. 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. (2) This device must accept any interference received, including interference that may cause undesired operation. 2. Changes or modifications not expressly approved by the party responsible 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 …

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Ham-Let Singapore Valves & Fittings Pte Ltd DATE :2022-3-30 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2A3I5-HF Product Name: IoT-COMMBOX-IoT HF Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential: • Schematics • Block diagram • Operation description • Bom • Tune up These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Dated this 2022-3-30 By: Ji Fong Lim Signature Printed Title: Hardware Project Manager (IoT) On behalf of : Ham-Let Singapore Valves & Fittings Pte Ltd Telephone: +65-91295270 31-03-2022

Ham-Let Singapore Valves & Fittings Pte Ltd Date: 2022-3-30 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Compliance Testing, LLC to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). Sincerely, Dated this 2022-3-30 By: Ji Fong Lim Signature Printed Title: Hardware Project Manager (IoT) On behalf of : Ham-Let Singapore Valves & Fittings Pte Ltd Telephone: +65-91295270 31-03-2022

Ham-Let Singapore Valves & Fittings Pte Ltd DATE:2022-3-30 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act asAgent On our behalf, I appoint Jianyan Testing Group Shenzhen Co., Ltd.; No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community,Xinqiao Street, Bao'an District, Shenzhen, Guangdong,People's Republic of China., to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by Nemko Canada Inc, still resides with 1688 Meridian Av.Suite 700, Miami Beach,FL,US Dated this 2022-3-30 By: Ji Fong Lim Signature Printed Title: Hardware Project Manager (IoT) On behalf of : Ham-Let Singapore Valves & Fittings Pte Ltd Telephone: +65-91295270 31-03-2022

Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 18 of 30 8 EUT Constructional Details Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 19 of 30 Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 20 of 30 Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 21 of 30 Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 22 of 30 Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 23 of 30

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Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 24 of 30 Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 25 of 30 Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 26 of 30 Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 27 of 30 Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 28 of 30 Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 29 of 30 Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 30 of 30 ------End of report------

JianYan Testing Group Shenzhen Co., Ltd. Report No.: JYTSZ-R01-2200087 This equipment has been shown to be capable of compliance with the applicable technical standards as indicated in the measurement report and was tested in accordance with the measurement procedures specified in above the application standard version. Test results reported herein relate only to the item(s) tested. This document cannot be reproduced except in full, without prior written approval of the Company. Any unauthorized alteration, forgery or falsification of the content or appearance of this document is unlawful and offenders may be prosecuted to the fullest extent of the law. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested and such sample(s) are retained for 90 days only. 1 Cover Page FCC EMC Test Report Applicant: Ham-Let Singapore Valves & Fittings Pte Ltd Address of Applicant: 1 Bukit Batok Street 22 #01-04/01-05 Singapore 659592 Equipment Under Test (EUT) Product Name: IoT-COMMBOX-IoT HF Model No.: IoTHF Trade Mark: N/A FCC ID: 2A3I5-HF Applicable Standards: FCC CFR Title 47 Part 15B Date of Sample Receipt: 07 Mar., 2022 Date of Test: 08 Mar., to 28 Mar., 2022 Date of report Issued: 30 Mar., 2022 Test Result: PASS * Tested by: Date: 30 Mar., 2022 Test Engineer Reviewed by: Date: 30 Mar., 2022 Project Engineer Approved by: Date: 30 Mar., 2022 Manager Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 2 of 30 2 Version Version No. Date Description 00 30 Mar., 2022 Original Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 3 of 30 3 Contents Page 1 COVER PAGE ....................................................................................................................................................... 1 2 VERSION ............................................................................................................................................................... 2 3 CONTENTS ........................................................................................................................................................... 3 4 GENERAL INFORMATION .................................................................................................................................. 4 4.1 CLIENT INFORMATION ...................................................................................................................................................... 4 4.2 GENERAL DESCRIPTION OF E.U.T. ...................................................................................................................................... 4 4.3 TEST MODE .................................................................................................................................................................... 4 4.4 DESCRIPTION OF SUPPORT UNITS ....................................................................................................................................... 4 4.5 DESCRIPTION OF CABLE USED ............................................................................................................................................ 4 4.6 MEASUREMENT UNCERTAINTY ........................................................................................................................................... 5 4.7 ADDITIONS TO, DEVIATIONS, OR EXCLUSIONS FROM THE METHOD ............................................................................................ 5 4.8 LABORATORY FACILITY ...................................................................................................................................................... 5 4.9 LABORATORY LOCATION ................................................................................................................................................... 5 4.10 TEST INSTRUMENTS LIST .............................................................................................................................................. 6 5 MEASUREMENT SETUP AND PROCEDURE .................................................................................................. 7 5.1 TEST SETUP .................................................................................................................................................................... 7 5.2 TEST PROCEDURE ............................................................................................................................................................ 9 6 TEST RESULTS.................................................................................................................................................. 10 6.1 SUMMARY ................................................................................................................................................................... 10 6.1.1 Clause and data summary .......................................................................................................................... 10 6.1.2 Test Limit ....................................................................................................................................................... 10 6.2 CONDUCTED EMISSION ................................................................................................................................................... 11 6.3 RADIATED EMISSION ........................................................…

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Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 16 of 30 7 Test Setup Photo Radiated Emission Below 1GHz Above 1GHz Report No.: JYTSZ-R01-2200087 JianYan Testing Group Shenzhen Co., Ltd. Report Template No.: JYTSZ4b-147-C Project No.: JYTSZR2203018 No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China. Tel: +86-755-23118282, Fax: +86-755-23116366 Page 17 of 30 Conducted Emission