2BTU2MSBN-2MSBN-2 LoRa Node with MSBS Sensor

851158-00 2025 1/6 MSBN-2 LoRa Node with MSBS Sensor System Description Continuous steam trap monitor for testing steam traps for loss of steam and banking up of condensate. The MSBN-2 LoRa Node with MSBS Sensorequipment is used for monitoring steam traps for loss of steam and banking up of condensate Monitoring enables the early detection of faulty steam traps and banking up of condensate. The early detection of faulty valves increases the efficiency of the plant as a whole and reduces its energy consumption. The detection of banked up condensate prevents damage and malfunctions in the plant as a whole. Function Monitoring of a steam trap by the device is carried out using temperature measurements and ultrasonic measurements via a piezoelectric element. The measurements are performed automatically at regular intervals. The temperature sensor (external PT100) measures the temperature at the measuring point. The recorded data is analysed within the LoRa node and transmitted to the LoRa gateway (accessory). Data transmission takes place via a network protocol using LoRaWAN radio technology. The temperature readings from the external PT100 sensor can also be transmitted. The evaluation of the measurement results is based on sound values, temperature, and the parameters of the steam trap being tested. Technical data Ambient conditions Area of application Indoors and outdoors Maximum altitude 2000 m (6562 ft) Protection against ingress of foreign bodies Suitable for industrial use Pollution degree 4 Admissible ambient temperature -40 – 85°C (-40 – 185°F) Connections Sensor thread: M6 The equipment sensor can be installed at the following measuring points: •in a pressure-bearing screw (PBS), in place of a cover screw in the steam trap. With 90° adapter (ADP) if necessary. ▪Replace the standard strainer cap of the condensate drain with a specific type of strainer cap featuring an MSB connection. ▪Fastened to the pipe by a clip (RFC) Available accessories The following accessories are available for the equipment: •Pressure-bearing screw (PBS) of steel or stainless steel •90° adapter (ADP) •Strainer cap with sensor interface (STC) •Clips (RFC) for mounting on pipes •LoRa gateway Further accessories are available on request. MSBN-2 LoRa Node with MSBS Sensor The MSBN-2 LoRa Node with MSBS Sensor equipment is used to monitor steam traps for loss of steam and banking up of condensate at differential pressures. The measurement results are shown on the GESTRA dashboard. The monitoring enables the early detection of faulty steam traps, water hammer and banking up of condensate. The early detection of faulty steam traps increases the efficiency of the plant as a whole and reduces its energy consumption. The detection of banked up condensate prevents damage and malfunctions in the plant as a whole. The equipment monitors steam traps using ultrasonic and temperature measurements taken by a piezo element. These measurements are performed automatically at regular intervals. The temperature sensor (external PT100) measures the temperature at the measuring point. The measured data is analysed in the MSBN ... LoRa node and transferred to the LoRa gateway (accessory). The data is transferred by LoRa wireless technology via network protocol. The temperature measurements taken by the external PT100 can also be transferred. The measurement results are analysed on the basis of the sound and temperature values and parameters of the steam trap under test. To use the equipment, a LoRa gateway and LoRa network server are required for displaying readings. 851158-00 2025 2/6 MSBN-2 LoRa Node with MSBS Sensor Materials Komponente Spezifikation MSBS-2 Sensor Housing 1.4404 / 316L LoRa Node MSBN-2 housing Polycarbonate (PC) Battery Lithium-metal-battery (Li-SOCl 2 ) The equipment and its components contain electronic parts Pressure and temperature ratings Assembly Storage/ operating temperature °C (°F) IP rating Sensor MSBS-2 -40 — 85 (-40 — 185) IP66 / IP67 LoRa Node MSBN-2 Permissible media temperature depending on ambient temperature at an installation angle of 45 Ambient temperature °C (°F) Fluid temperature °C (°F) -40 — 70 (-40 — 158) 550 (1.022) >70 — 80 (>158 — 176) 450 (842) >80 — 85 (>176 — 185) 350 (662) Measurement accuracy Measuring point Loss of steam Temperature* PBS 1 kg/h + 5% from final value — ADP 1 kg/h + 5% from final value — RFC 3 kg/h + 30% from final value — MSBS-2 (PT100) — +/- 1 K External Temp. Element (PT100) — +/- 1 K *Surface temperature can deviate from fluid temperature MSBN-2 MAX MSBN-2 HVIN MSBN-2 MAX MSBN-2 MODEL Bluetooth module with integrated microcontroller and accompanying components which are assembled on the model “MSBN-2 MAX” and not assembled on the model “MSBN-2”. 851158-00 2025 3/6 MSBN-2 LoRa Node with MSBS Sensor Dimensions and weight Assembly Measures mm(in) Weight g (lbs) Length/height Wide/ Length/height Sensor MSBS-2 (incl. Connector) 185 (7,28“) 29,8 (1,17“) – 160 (0,35) Cable (MSBN-2 to MSBS) 1 1.400 (55“) – – – Cable length of temperature sensor PT100 3.000 (118“) – – – LoRa Node MSBN-2 228 (9,0“) 66 (2,6“) 47 (1,85“) 200 (0,44) 2 1  Mounting dimension for cable fastening: 100 mm (3,94”), cable bending radius >25 mm (0,98”) 2 Including connection cable MSB-2 Nr. Designation Nr. Designation 1 MSBS-2 sensor 6 Temperature sensor (PT100) 2 Connecting cable 7 Pressure-bearing screw PBS (accessory) 3 LoRa Node MSBN-2 8 Steam trap (BK 45 shown here as an example) 4 Button 5 Status LED 851158-00 2025 4/6 MSBN-2 LoRa Node with MSBS Sensor Performance profile ▪Continuous steam trap monitoring for steam traps (e.g. GESTRA BK, MK and UNA) ▪Measurement evaluation is carried out within the device. ▪Measurement and evaluation results are included in the LoRa payload. ▪Connection to LoRa network server via LoRaWAN radio technology (AES encryption). ▪Optional: Display of measurement and evaluation results on the GESTRA Dashboard. For this, data from the LoRa network server is securely …

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GESTRA AG Address: Munchener Str. 77, 28215 Bremen. Germany Tel: +49 421 35 03-204; Fax: +49 421 35 03-393 Email: [email protected] Date: 2026-06-03 Attestation Letter FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To whom it may concern: Our product MSBN-2 LoRa Node with MSBS Sensor, Model number: MSBN-2 MAX， MSBN-2 (FCC ID: 2BTU2MSBN-2), for marketing purpose, this product only supports Lora_ Hybrid System(902.3-914.9MHz), Lora_ DTS(903-914.2MHz). The other functions, bands and modes was disabled to use by manufacturer in the software, the end user has no capability to activate it. Sincerely Yours, Signature: Printed Name: Eike Brakmann Title: Head of IPM R&D Bremen

GESTRA AG Address: Munchener Str. 77, 28215 Bremen. Germany Tel: +49 421 35 03-204; Fax: +49 421 35 03-393 Email: [email protected] CFR 47 §2.911(d)(5)(i) Attestation Letter Attestation Letter Date: 2026-06-03 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i) Filing FCC ID: 2BTU2MSBN-2 GESTRA AG certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely Yours, Signature： Printed Name: Eike Brakmann Title: Head of IPM R&D Bremen

GESTRA AG Address: Munchener Str. 77, 28215 Bremen. Germany Tel: +49 421 35 03-204; Fax: +49 421 35 03-393 Email: [email protected] CFR 47 §2.911 (d)(5)(ii) Attestation Letter Attestation Letter Date: 2026-06-03 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(ii) Filing FCC ID: 2BTU2MSBN-2 GESTRA AG certifies that as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely Yours, Signature： Printed Name: Eike Brakmann Title: Head of IPM R&D Bremen

U.S. AGENT LETTER OF ATTESTATION Date: 2026-06-03 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: 2BTU2MSBN-2 GESTRA AG certifies that, as of the date of the filing of the application, GESTRA USA is our designated U.S. agent for service of process for the above referenced FCC ID. GESTRA AG accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. GESTRA USA accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Company Name: GESTRA USA Address: 1101 Carolina Pines Dr. Blythewood, SC. 29016 USA FRN: 0038678843 Tel.: +1 339 293 9552 Email: [email protected] Signed by (printed name): Michael Ste. Marie Signature: Applicant: GESTRA AG Address: Munchener Str. 77, 28215 Bremen. Germany FRN: 0037776721 Tel.: +49 421 35 03-204 Email: [email protected] Signed by (printed name): Eike Brakmann

GESTRA AG Address: Munchener Str. 77, 28215 Bremen. Germany Tel: +49 421 35 03-204; Fax: +49 421 35 03-393 Email: [email protected] FCC Authorization Date: 2026-06-03 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We GESTRA AG, the undersigned, hereby authorizes Bay Area Compliance Laboratories Corp. (Shenzhen) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. (Shenzhen) on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a 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. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: Printed Name: Eike Brakmann Title: Head of IPM R&D Bremen QA-FR-170-B 7/29/2014

GESTRA AG Address: Munchener Str. 77, 28215 Bremen. Germany Tel: +49 421 35 03-204; Fax: +49 421 35 03-393 Email: [email protected] Date: 2026-06-03 FCC Confidential Authorization FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2BTU2MSBN-2 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, GESTRA AG hereby requests long-term confidential treatment of information accompanying this application as outlined below: • Block Diagram • Schematics • Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature： Printed Name: Eike Brakmann Title: Head of IPM R&D Bremen

GESTRA AG Address: Munchener Str. 77, 28215 Bremen. Germany Tel: +49 421 35 03-204; Fax: +49 421 35 03-393 Email: [email protected] Product Similarity Declaration Date: 2026-06-03 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir/Madam, We , GESTRA AG hereby declare that we have a product named as MSBN-2 LoRa Node with MSBS Sensor, Model number: MSBN-2 MAX (FCC ID: 2BTU2MSBN-2), was tested by BACL (Shenzhen), Meanwhile, for our marketing purpose, we would like to list a series model (MSBN-2) on reports and certificate, all the models are identical in the schematics, PCB layout and electronic component. The difference is an additional Bluetooth module with integrated microcontroller and accompanying components which are assembled on the model “MSBN-2 MAX” and not assembled on the model “MSBN-2”. The information of the Bluetooth module is as follows Bluetooth module (contains FCC ID: YCP-32WB5MMGH02 IC: 8976A-32WB5MMGH02) We confirm that all information above is true, and we’ll be responsible for all the consequences. Please contact me if you have any question. Bluetooth module Sincerely, Signature, Printed Name: Eike Brakmann Title: Head of IPM R&D Bremen

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-EXP Page 1 of 8 EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Model: MSBN-2 MAX ANT-Lora Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-EXP Page 2 of 8 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-EXP Page 3 of 8 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-EXP Page 4 of 8 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-EXP Page 5 of 8 Model: MSBN-2 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-EXP Page 6 of 8 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-EXP Page 7 of 8 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-EXP Page 8 of 8

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501Z01980E-RF EXHIBIT A - FCC ID LABEL AND LOCATION Model: MSBN-2 MAX FCC ID Label Label 1 Label 2 FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925) Label 1 Label 2 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501Z01980E-RF Model: MSBN-2 FCC ID Label Label 1 Label 2 FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925) Label 1 Label 2

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-INP Page 1 of 11 EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Model: MSBN-2 MAX Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-INP Page 2 of 11 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-INP Page 3 of 11 BT Module Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-INP Page 4 of 11 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-INP Page 5 of 11 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-INP Page 6 of 11 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-INP Page 7 of 11 Model: MSBN-2 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-INP Page 8 of 11 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-INP Page 9 of 11 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-INP Page 10 of 11 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-INP Page 11 of 11

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RFA TR-EM-RF309 Page 12 of 60 Version 3.1 FCC §15.247 (i) & §1.1307 (b) (3) & §2.1091- MPE-Based Exemption Applicable Standard According to subpart 15.247 (i) and subpart 2.1091 systems operating under the provisions of this section shall be operated in a manner that ensures the public is not exposed to RF energy level in excess of the communication guidelines. According to KDB 447498 D04 Interim General RF Exposure Guidance V01 MPE-Based Exemption: General frequency and separation-distance dependent MPE-based effective radiated power (ERP) thresholds are in Table B.1 [Table 1 of § 1.1307(b)(3)(i)(C)] to support an exemption from further evaluation from 300 kHz through 100 GHz. R is the minimum separation distance in meters f = frequency in MHz Result Antenna Gain # ERP Mode Frequency (MHz) Tune up conducted power # (dBm) (dBi)(dBd)(dBm)(mW) Evaluation Distance (m) ERP Limit (mW) Lora_ Hybrid902.3-914.9 6.5 0.3-1.85 4.65 2.92 0.2 462 Lora_ DTS903-914.2 18.5 0.3-1.85 16.65 46.24 0.2462 BLE2402-2480 0.97 1.9 -0.25 0.72 1.18 0.2768 Note: 1. The tune up conducted power # and antenna gain # was declared by the applicant. 2. 0dBd=2.15dBi 3. The BLE and Lora can transmit at same time, the Lora_ Hybrid and Lora_ DTS cannot transmit at same time. 4. The device contains a certified RF module (Model: STM32WB5MMGH, FCC ID: YCP-32WB5MMGH02) Simultaneous transmitting consideration (worst case): The ratio= ERP Lora /limit + ERP BLE /limit = 46.24/462+ 1.18/768 =0.102<1.0 To maintain compliance with the FCC’s RF exposure guidelines, place the equipment at least 20cm from nearby persons. Result: Compliant.

MSBN-2 MAXPassive antenna report client：XinDi item：MSBN-2 MAX Antenna modification：A0 Preparation engineering：Guoxi（18970988655） auditor：Guoxi（18970988655） Address：FeishengElectronics, 3rd Floor, Building A8, GuangxingtengIndustrial Park, LongdongCommunity, Baolong Street, LonggangDistrict, Shenzhen FEI SHENG DIAN ZI Product graphics ANT Antenna matching PCB end matching circuit is unchanged Serial number capacitanceinductance 1N/A N/A 2N/A N/A 3N/A N/A 4N/A N/A Frequency （工作频段） 915 VSWR （驻波比） 1.26 The antenna test results S11 Parameters Antenna test result Efficiency gain Frequency (MHz) （工作频段） Efficiency (%) （效率） Peak GAIN (dBi) （增益） 902.3~914.9 58.400.3 903~914.2 60.380.3 Antenna test result Two, three-dimensional graphics 915MHz

Note: The information marked # is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report must not be used by the customer to claim product certification, approval, or endorsement by NVLAP or any agency of the U.S. Government. This report may contain data that are not covered by the NVLAP accreditation and are marked with an asterisk “▼”. Bay Area Compliance Laboratories Corp. (Shenzhen) 5F(B-West) , 6F, 7F, the 3rd Phase of Wan Li Industrial Building D, Shihua Rd, FuTian Free Trade Zone, Shenzhen, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn TR-EM-RF309 Page 1 of 60 Version 3.1 ` TEST REPORT Applicant Name:GESTRA AG Address:Münchener Str. 77, 28215 Bremen. Germany Report Number:2501Z01980E-RFA FCC ID:2BTU2MSBN-2 IC:35069-MSBN2 Test Standard (s) FCC PART 15.247； RSS-GEN ISSUE 5, FEBRUARY 2021 AMENDMENT 2; RSS-247 ISSUE 4, July 24, 2025 Sample Description Product Type:MSBN-2 LoRa Node with MSBS Sensor Model No.:MSBN-2 MAX Multiple Model(s) No.:MSBN-2 Trade Mark:GESTRA, Spirax Sarco Date Received:2025/11/19 Issue Date:2026/08/07 Test Result:Pass ▲ ▲ In the configuration tested, the EUT complied with the standards above. Prepared and Checked By:Approved By: Allen BaiNancy Wang RF EngineerRF Supervisor Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RFA TR-EM-RF309 Page 2 of 60 Version 3.1 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ..........................................................................................................................4 GENERAL INFORMATION ........................................................................................................................................5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT)......................................................................................5 OBJECTIVE ....................................................................................................................................................................5 TEST METHODOLOGY....................................................................................................................................................5 MEASUREMENT UNCERTAINTY .....................................................................................................................................6 TEST FACILITY ..............................................................................................................................................................6 SYSTEM TEST CONFIGURATION ...........................................................................................................................7 DESCRIPTION OF TEST CONFIGURATION .......................................................................................................................7 EQUIPMENT MODIFICATIONS ........................................................................................................................................7 EUT EXERCISE SOFTWARE ...........................................................................................................................................7 SUPPORT EQUIPMENT LIST AND DETAILS .....................................................................................................................7 EXTERNAL I/O CABLE...................................................................................................................................................7 BLOCK DIAGRAM OF TEST SETUP .................................................................................................................................8 SUMMARY OF TEST RESULTS ................................................................................................................................9 TEST EQUIPMENT LIST ..........................................................................................................................................10 FCC §15.247 (I) & §1.1307 (B) (3) & §2.1091- MPE-BASED EXEMPTION .........................................................12 APPLICABLE STANDARD .............................................................................................................................................12 RESULT .......................................................................................................................................................................12 RSS-102 § 6.6 - FIELD REFERENCE LEVEL EXPOSURE EXEMPTION LIMITS .........................................13 FCC §15.203& RSS-GEN §6.8 - ANTENNA REQUIREMENT ..............................................................................14 APPLICABLE STANDARD .............................................................................................................................................14 ANTENNA CONNECTOR CONSTRUCTION .....................................................................................................................15 FCC §15.209, §15.205, §15.247(D), RSS-GEN §8.10 & RSS-247 §6.6 - SPURIOUS EMISSIONS......................16 APPLICABLE STANDARD .............................................................................................................................................16 EUT SETUP .................................................................................................................................................................16 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP ...........................................…

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Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-TSP Page 1 of 3 EXHIBIT D - TEST SETUP PHOTOGRAPHS For model: MSBN-2 MAX Radiated Emissions View (Below 30MHz) Radiated Emissions View (Below 1 GHz) Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-TSP Page 2 of 3 Radiated Emissions View (Above 1GHz) RF Conducted Test Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501Z01980E-RF-TSP Page 3 of 3 For model: MSBN-2 Radiated Emissions View (Below 30MHz) Radiated Emissions View (Below 1 GHz)