2A8FIZT-300ABBluetooth Digital Multimeter

UserManual Allrightsreserved. Specificationsaresubjecttochangewithoutnotice. LIMITEDWARRANTY AND LIMITATION OF LIABILITY Customersenjoyone-yearwarrantyfromthedate ofpurchase. Thiswarrantydoesnotcoverfuses,disposable batteries,damagefrommisuseaccident,neglect, alteration,contamination,orabnormalconditions ofoperationorhandling,includingfailurescaused byuseoutsideoftheproduct'sspecifications,or normalwearandtearofmechanicalcomponents. FCC Caution： 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. Any 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. Contents TitlePage I n t r o d u c t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Safety Information...................................1 Instrument Overview...................................3 L C D D i s p l a y . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 F u n c t i o n B u t t o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 R o t a r y S w i t c h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 I n p u t T e r m i n a l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Measurements Instruction..................................10 MeasurebyAUTOmode......................................10 Me a s u r e A C / D C V o l t a g e . . . . . . . . . . . . . . 1 0 Me a s u r e A C / D C C u r r e n t . . . . . . . . . . . . . . 1 1 Measure Res i s tan c e ............. ........ ... ... . 1 2 Test f o r C o n t i nui t y .... ... ... ... . . . . ... ... . . . . . 1 2 Test D i o d e s . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Meas ure C a p acita n c e ... ............ ...... ....... 13 Measure Frequency............................14 Measure Duty Cycle..........................15 M e a s ure T e mperature ............ . . . . . . . . . . . . . 1 5 Ma i n t e n a n c e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 Clean the Product............................16 Replace the Batteries............................16 Rep l a c e t h e F u s e s . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7 S p e c i f i c a t i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8 General Specifications........................18 Mechanical Specifications........................18 Environmental Specifications........................19 Electrical Specifications..............................20 1 Introduction This product is a battery-powered, true-rms, auto- ranging digital multimeter with a 6000 counts LCDdisplayanda backlight. SafetyInformation Toavoidpossibleelectricalshock,fire,orpersonal injury,pleasereadallsafetyinformationbeforeyou usetheproduct.Pleaseusetheproductonlyas specified,ortheprotectionsuppliedbytheproductcan becompromised. • Examine the case before you use the product. Look for cracks or missing plastic. Carefully look at the insulationaroundthe terminals. • The measurementmustbemadewithcorrectinput terminals and functions and within the allowable measuringrange. •Donotusetheproductaroundexplosivegas,vapor, orin damporwet environments. •Keepfingersbehindthefingerguardsontheprobes. •When the product has already been connected to the line being measured, do NOT touch the input terminalthatis notinservice. •Disconnect the test leads from the circuit before changingthemode. •When the voltage to be measured exceeds 36V DC or25VAC,theoperator shall becarefulenoughto avoidelectricshock. •Misuseofmodeorrangecanleadtohazards,be cautious. “” willbeshownonthedisplaywhen theinputis outofrange. •Lowlevelofabatterywillresultinincorrect readings. Changethebatterieswhenbatterylevelis low. Donotmakemeasurementswhenthebattery dooris notproperlyplaced. 2 ① Displayfreezespresentreading. ② Displayshows maximum reading. ③ Displayshows minimum reading. ④ Diodetest. ⑤ Continuitytest. ⑥ Dutycycletest. ⑦ Temperature test. (Fahrenheitor Celsius) ⑧Resistancetest.（Ohm） ⑨ Frequencytest.(Hertz) InstrumentOverview LCD Display ① ② ③ ④ ⑤ ⑥ ⑦ ⑨ ⑧ ⑩ ⑮ ⑭ ⑬ ⑫ ⑪ ㉑ ⑳ ⑲ ⑱ ⑰ ⑯ 3 ⑩ Capacitancetest.（Farad） ⑪ Voltagetest.(Volt) ⑫ Currenttest.(Ampere) ⑬ Manualrange. Theuser selectsthe range. ⑭ Autorange.Theproductselectsthe rangewiththebestresolution. ⑮ Theproductmeasuresbothsinusoidal and nonsinusoidalac waveforms accurately. ⑯ Lowbattery.Replacebatteries. ⑰ AlternatingCurrent ⑱ DirectCurrent ⑲ Negativereadings. ⑳ Relativemode. ㉑ Bluetoothconnection Measurementunits. 4 ① Pushoncetoholdthecurrentreadingonthe display;pushagain t…

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SHENZHEN ZOTEK INSTRUMENTS CO.,LTD. Agent Authorization Company: SHENZHEN ZOTEK INSTRUMENTS CO.,LTD. Address: 2F,2nd Building,Hejing Industrial Zone，Fuyuan 1 Road,Fuyong Town,BaoAn District,Shenzhen,China Product Name: Bluetooth Digital Multimeter Model Number(s): ZT-300AB, AN9002 Product Description: Bluetooth Digital Multimeter We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2022-08-19 Name: Li De Title: Engineer Company: SHENZHEN ZOTEK INSTRUMENTS CO.,LTD.

SHENZHEN ZOTEK INSTRUMENTS CO.,LTD. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2022/08/19 Subject; Request for Confidentiality FCC ID: 2A8FIZT-300AB To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Li De Title: Engineer

SHENZHEN ZOTEK INSTRUMENTS CO.,LTD. Model Difference Data：2022.08.19 Product description: Bluetooth Digital Multimeter Model name: ZT-300AB, AN9002 Trade Name: ZOYI,ZOTEK, 众仪电测 FCC ID: 2A8FIZT-300AB All the model are the same circuit and RF module, except model names . Regards Sincerely Client’s signature : Client’s name / title : Li De （Engineer） Contact information / address：2F,2nd Building,Hejing Industrial Zone，Fuyuan 1 Road,Fuyong Town,BaoAn District,Shenzhen,China

External Photos

Model: ZT-300AB FCC ID: 2A8FIZT-300AB Label Location

Internal Photos ANT

Shenzhen CTB Testing Co., Ltd. FCC ID: 2A8FIZT-300AB Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHZ)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where: • f(GHZ) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BLE: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 -3.012 0.50 -3±1 -2.00 0.63 <5 0.19558 3.00 YES 2.44 -3.594 0.44 -3±1 -2.00 0.63 <5 0.19712 3.00 YES 2.480 -3.557 0.44 -3±1 -2.00 0.63 <5 0.19873 3.00 YES GFSK Conclusion: For the max result : 0.19873≤ FCC Limit 3.0 for 1g SAR.

ANTENNA SPECIFICATION Summary ITEM ANT SPEC Model Name 2.4G ANT Antenna plate PCB antenna Center Frequency Horizontal Vertical 2400MHz 2450MHz 2500MHz 2400MHz 2450MHz 2500MHz -1.66-0.841.00 -6.16-3.65-2.21 MAX. Gain 1.0 Polarization Horizontal and Vertical Impedance 50 Ohm Manufacture SHENZHENSHIXINZHONGXIN TECHNOLOGY.CO.,LTD Antenna Photo & Length (mm) Ho rizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Frequency Gain(dBi) (MHz) Max. Min Avg. 2400 -1.66179-30.2813-8.78713 2450 -0.847811-38.7595-7.87812 2500 1.001430 -23.6329-6.99139 V ertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Frequency Gain(dBi) (MHz) Max. Min Avg. 2400 -6.1623-23.1425-12.5295 2450 -3.6534-26.2866-10.6699 2500 -1.2101-29.4381-9.58526

Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220810027RFX Report Tel: 4008-707-283Web: http://www.ctb-lab.net Page 1 of 33 TEST REPORT Compiled by: Reviewed by: Approved by: Chen Zheng Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: Bluetooth Digital Multimeter FCC ID: 2A8FIZT-300AB Trademark: ZOYI, ZOTEK, 众仪电测 Model Number: ZT-300AB, AN9002 Prepared For: SHENZHEN ZOTEK INSTRUMENTS CO., LT D. Address: 2 F, 2nd Building, Hejing Industrial Zone, Fuyuan 1 Road, Fuyong Town, BaoAn District, Shenzhen, China Manufacturer: SHENZHEN ZOTEK INSTRUMENTS CO., LT D. Address: 2 F, 2nd Building, Hejing Industrial Zone, Fuyuan 1 Road, Fuyong Town, BaoAn District, Shenzhen, China Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: Floor 1&2, Building A, No. 26 of Xinhe Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, China. Sample Received Date: Aug. 4, 2022 Sample tested Date: Aug. 4, 2022 to Aug. 10, 2022 Issue Date: Aug. 10, 2022 Report No.: CTB220810027RFX Te s t Standards FCC Part15.247 ANSI C63.10:2013 Test Results PASS Remark: This is Bluetooth radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220810027RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 33 TABLE OF CONTENT Test Report Declaration Page 1. VERSION ........................................................................................................................................ 3 2. TEST SUMMARY ........................................................................................................................... 4 3. MEASUREMENT UNCERTAINTY ................................................................................................. 5 4. PRODUCT INFORMATION AND TEST SETUP ............................................................................ 6 4.1 Product Information .......................................................................................................................... 6 4.2 Test Setup Configuration .................................................................................................................. 6 4.3 Support Equipment........................................................................................................................... 6 4.4 Channel List ..................................................................................................................................... 7 4.5 Test Mode ........................................................................................................................................ 7 4.6 Test Environment ............................................................................................................................. 7 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................................................... 8 5.1 Test Facility ...................................................................................................................................... 8 5.2 Test Instrument Used ....................................................................................................................... 8 6. AC POWER LINE CONDUCTED EMISSION ................................................................................ 10 6.1 Block Diagram Of Test Setup ......................................................................................................... 10 6.2 Limit ................................................................................................................................................ 10 6.3 Test procedure ............................................................................................................................... 10 6.4 Test Result ..................................................................................................................................... 12 7. RADIATED SPURIOUS EMISSION ............................................................................................. 13 7.1 Block Diagram Of Test Setup ......................................................................................................... 13 7.2 Limit ................................................................................................................................................ 13 7.3 Test procedure ............................................................................................................................... 14 7.4 Test Result ..................................................................................................................................... 15 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS ............................................... 22 8.1 Block Diagram Of Test Setup ......................................................................................................... 22 8.2 Limit ................................................................................................................................................ 22 8.3 Test procedure ............................................................................................................................... 22 8.4 Test Result ..................................................................................................................................... 23 9. COUDUCTED OUTPUT POWER ......................…

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Radiated Emission Below 1G Above 1GHz