ZHZLHT52LoRaWAN Temperature & Humidity Sensor

FCC Warning 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. The users manual or instruction manual for an intentional or unintentional radiator shall caution the user that changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. In cases where the manual is provided only in a form other than paper, such as on a computer disk or over the Internet, the information required by this section may be included in the manual in that alternative form, provided the user can reasonably be expected to have the capability to access information in that form. 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 maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and operated with minimum distance between 20cm the radiator your body: Use only the supplied antenna.

C5266091_X8_Ed.1 1/1 Letter of Authorization <Dragino Technology Co., Limited > Company:Dragino Technology Co., Limited Address:Room 202, Block B, BCT Incubation Bases, No.8 CaiYunRoad LongCheng Street, LongGang District ; Shenzhen 518116,China Product Name: LoRaWAN Temperature & Humidity Sensor Model Number: LHT52 FCC Identifier:ZHZLHT52 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: edwin chen Date: 2022-05-09 Title: Manager Signature of applicant:

C5266091_X10_Ed.1 1/1 < Dragino Technology Co., Limited > Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2022-05-09 Subject: Request for Confidentiality FCC ID:ZHZLHT52 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality ID Label/Location No No Attestation Statement No No External Photos No Block Diagram Schematics Test Report No No Test Setup Photos No User’s Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) No No SDR Software / Security Info No Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: edwin chen Title: Manager

EUTPHOTO(ExternalPhotos)

Label and label location LoRaWAN Temperature & Humidity Sensor FCC ID:ZHZLHT52

EUTPHOTO(InternalPhotos) ANT ※※※※※ENDOFREPORT※※※※※

FCCID:ZHZLHT52 RFExposureEvaluation Limits Thecriterialistedinthefollowingtableshallbeusedtoevaluatetheenvironmentimpactofhumanexposure toradiofrequency(RF)radiationasspecifiedin1.1307(b) LimitsforMaximumPermissibleExposure(MPE) Frequencyrange (MHz) Electricfield strength (V/m) Magneticfieldstrength (A/m) Powerdensity (mW/cm 2 ) Averagingtime (minutes) (A)LimitsforOccupational/ControlledExposures 0.3–3.06141.63*(100)6 3.0–301842/f4.89/f*(900/f 2 )6 30–30061.40.1631.06 300–1500f/3006 1500–100,00056 (B)LimitsforGeneralPopulation/UncontrolledExposure 0.3–1.346141.63*(100)30 1.34–30824/f2.19/f*(180/f 2 )30 30–30027.50.0730.230 300–1500f/150030 1500–100,0001.030 f=frequencyinMHz Friistransmissionformula:Pd=(Pout*G)/(4*pi*r 2 ) Where Pd=powerdensityinmW/cm 2 ,Pout=outputpowertoantennainmW; G=gainofantennainlinearscale,Pi=3.1416; R=distancebetweenobservationpointandcenteroftheradiatorincm PdidthelimitofMPE,1mW/cm 2 .Ifweknowthemaximumgainoftheantennaandthetotalpowerinputto theantenna,throughthecalculation,wewillknowthedistancerwheretheMPElimitisreached. TestProcedure SoftwareprovidedbyclientenabledtheEUTtotransmitandreceivedataatlowest,middleandhighest channelindividually. TestResultof RF ExposureEvaluation Wireless function Output powerto antenna (dBm) Antenna Gain(dBi) Outputpower to antenna (mW) PowerDensity at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result 125KHz Bandwidth 16.020 2 39.990.0126100.602PASS 500KHz Bandwidth 15.735 2 37.450.0118090.602PASS

Project No.: ZKT-2203011243E-1 Page 1 of 29 TEST REPORT FCC ID:ZHZLHT52 Report Number................................ : ZKT-2203011243E-1 Date of Test .................................................Mar. 01, 2022 to Apr. 27, 2022 Date of issue ..................................... : Apr. 27, 2022 Total number of pages ....................... 33 Test Result........................................ : PASS Testing Laboratory. ........................ : Shenzhen ZKT Technology Co., Ltd. Address ............................................ : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Applicant's name .......................... : Dragino Technology Co., Limited Address ............................................ : Room 202, Block B, BCT Incubation Bases, No.8 CaiYunRoad LongCheng Street, LongGang District ; Shenzhen 518116,China Manufacturer's name .................... : Dragino Technology Co., Limited. Address ............................................ : Room 202, Block B, BCT Incubation Bases, No.8 CaiYunRoad LongCheng Street, LongGang District ; Shenzhen 518116,China Test specification: Standard ........................................... : FCC CFR Title 47 Part 15 Subpart C Section 15.247 Test procedure ................................. : / Non-standard test method ............... : N/A Test Report Form No. .................... : TRF-EL-110_V0 Test Report Form(s) Originator .... : ZKT Testing Master TRF .................................... : Dated: 2020-01-06 This device described above has been tested by ZKT, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of ZKT, this document may be altered or revised by ZKT, personal only, and shall be noted in the revision of the document. Product name ................................. : LoRaWAN Temperature & Humidity Sensor Trademark ....................................... : DRAGINO Model/Type reference ....................... : LHT52 Ratings .............................................. : Input: DC 3 by Battery Project No.: ZKT-2203011243E-1 Page 2 of 29 Testing procedure and testing location: Testing Laboratory ................................... : Shenzhen ZKT Technology Co., Ltd. Address ...................................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Jim Liu Tested by (name + signature) .................... : Tom Zou Reviewer (name + signature) ..................... : Lake Xie Approved (name + signature) ..................... : Project No.: ZKT-2203011243E-1 Page 3 of 29 TABLE OF CONTENTS Page 1.VERSION .......................................................................................................................................................... 4 2. TEST SUMMARY ............................................................................................................................................ 5 2.1 TEST FACILITY ......................................................................................................................................... 6 2.2 MEASUREMENT UNCERTAINTY ............................................................................................................ 6 3. GENERAL INFORMATION ............................................................................................................................. 7 3.1 GENERAL DESCRIPTION OF EUT .................................................................................................................. 7 3.2 TEST MODE ................................................................................................................................................. 9 3.3 TEST SETUP CONFIGURATION ...................................................................................................................... 9 3.4 SUPPORT EQUIPMENT .................................................................................................................................. 9 3.5 TEST INSTRUMENTS LIST ............................................................................................................................ 10 4 TEST ITEMS FOR DTS .................................................................................................................................. 11 4.1 CONDUCTED PEAK OUTPUT POWER ........................................................................................................... 11 4.2 CHANNEL BANDWIDTH ............................................................................................................................... 13 4.3 POWER SPECTRAL DENSITY ....................................................................................................................... 15 4.4 BAND EDGES ............................................................................................................................................. 17 5. ANTENNA REQUIREMENT .......................................................................................................................... 28 6. TEST SETUP PHOTO ................................................................................................................................... 29 7. EUT CONSTRUCTIONAL DETAILS ............................................................................................................ 29 Project No.: ZKT-2203011243E-1 Page 4 of 29 1.Version Report No. Version Description Approved ZKT-2203011243E Rev.01 Initial issue of report Apr. 27, 2022 Project No.: ZKT-2203011243E-1 Page 5 of 29 2. Test Summary Test Item Section in CFR 47 Result Antenna Requirement 15.203/15.247 (c) Pass AC Power Line Conducted Emission 15.207 N/A Conducted Peak Output Power 15.247…

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EUT TEST PHOTO