2BDDP-ZEROPORTABLE RADIATION DETECTOR

Portable radiation detector Radiacode Zero. User manual.I © 2025 Radiacode Ltd. Contents Chapter I Introduction 1 ................................................................................................................................... 2 1Appointment of the device ................................................................................................................................... 3 2Device design ................................................................................................................................... 4 3Technical specifications ................................................................................................................................... 5 4Developer contacts Chapter II Safety precautions and warnings 6 Chapter III Stand-alone use of the device 9 ................................................................................................................................... 10 1Before use ................................................................................................................................... 11 2Buttons ................................................................................................................................... 12 3Turning on and off ................................................................................................................................... 12 4Display ................................................................................................................................... 13 5Icons ................................................................................................................................... 15 6Indication: sound, vibration, light ................................................................................................................................... 15 7Battery charging ................................................................................................................................... 16 8Firmware update ................................................................................................................................... 17 9Menu usage ................................................................................................................................... 18 10Device settings .......................................................................................................................................................... 18Selecting units of m easurem ent .......................................................................................................................................................... 19Count rate - alarm levels .......................................................................................................................................................... 20Dose rate - alarm levels .......................................................................................................................................................... 22Dose - alarm levels .......................................................................................................................................................... 23Display settings .......................................................................................................................................................... 24Signals - sound, vibration, light .......................................................................................................................................................... 27Bluetooth settings .......................................................................................................................................................... 27Language selection .......................................................................................................................................................... 28Tim e settings .......................................................................................................................................................... 29Reset to factory settings ................................................................................................................................... 29 11Display Modes .......................................................................................................................................................... 30Spectrum .......................................................................................................................................................... 31Monitor .......................................................................................................................................................... 32Dose .......................................................................................................................................................... 33Search .......................................................................................................................................................... 34Device info ................................................................................................................................... 34 12Alarms ................................................................................................................................... 36 13Possible problems Chapter IV Working with a smartphone 38 Chapter V Work with a PC 40 Chapter I 2 © 2025 Radiacode Ltd. Introduction 1Introduction This section contains the general information about dosimeter Radiacode Zero. Later in the document, the dosimeter Radiacode Zero is also referred to as "device" and "dosimeter". Attention! This user manual is valid for devices with firmware version from 4.11 The developer is constantly improving the firmware of the device, therefore it is recommended to always use the latest version of the user manual. The latest information can be found at the links…

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V01222025 Certification for Designating a U.S. Agent for Service of Process In compliance with section 2.911(d)(7), all applicants are required to appoint a U.S.-based contact to serve as their agent for service of process. This requirement applies to both domestic and foreign applicants. Entities located within the United States are permitted to designate themselves as their own agent for this purpose. Regardless of the applicant’s status, the designation of the U.S. agent must be included as an attachment to the equipment authorization application. The written certification must adhere to the following requirements: 1. It must bear the signatures of both the applicant and the designated U.S. agent for service of process, provided the agent is a separate entity from the applicant. 2. It must clearly state the applicant’s consent and confirm the agent’s obligation to accept service of process on the applicant’s behalf. 3. It must include a physical address and email address located in the United States for the designated agent. 4. It must acknowledge that the applicant will maintain the designated agent’s role for at least one year after ceasing all marketing and importation activities or upon the conclusion of any FCC-related proceedings involving the equipment. Key Details Regarding the U.S. Agent for Service of Process: ● The agent cannot be a Telecommunication Certification Body (TCB) or have affiliations with one (e.g., the agent cannot work for or be owned by a TCB or a related company). ● The agent must not be an FCC-recognized testing laboratory or have affiliations with one (e.g., the agent cannot work for or be owned by a test lab or a related company). ● The agent may be an individual or a company entity. ● The designated agent entity must have a physical U.S. address and phone number. ● It is recommended that the agent possess a Federal Registration Number (FRN), and including the FRN in the agent letter is considered best practice. ● The agent designation letter may be general for the grantee and is not required to be FCC ID-specific. If there is a change in the U.S. Agent for Service of Process for devices that are still being marketed or have ceased marketing for less than one year, the TCB must request the FCC to place the application in Audit Mode for every relevant TC Number. The updated agent letter will then need to supersede the previous version. Important Note: The role of the U.S. Agent for Service of Process should not be confused with the authorized agent responsible for signing the FCC Form 731, cover letters included in the application, or the agent who interacts directly with the TCB. Note for Attestation Letter: Print the attestation letter onto the manufacturer's corporate letterhead prior to submission. V01222025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 United States Date: 10/17/2025 Ref: Attestation Statement Part 2.911(d)(7) Filing FCC ID: 2BDDP-ZERO Radiacode LTD certifies that, as of the dates of this application, Americas Compliance Consulting LLC dba iCertifi “iCertifi” is our designated U.S. agent for service of process for the above referenced FCC ID. Radiacode LTD 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. iCertifi accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service process for the above referenced FCC ID. Designated U.S. Agent Information: Name Americas Compliance consulting, LLC dba iCertifi FCC FRN 0033399411 Address 2445 NE Division Street, Suite 202 Bend, OR 97703 United States Contact Person Paul Preston Telephone +1-866-885-4575 Email [email protected] Sincerely, Radiacode LTD Americas Compliance Consulting LLC dba iCertifi FRN 0033399411 Kirill Serdotetskiy Paul Preston Chief Operations Officer President/CEO Signature

Appendix- ZERO -Photos Page 3 of 12 2. Photographs –Constructional Details 2.1. EUT – External View Model ZERO FCC ID: 2BDDP-ZERO Appendix- ZERO -Photos Page 4 of 12 Appendix- ZERO -Photos Page 5 of 12 Appendix- ZERO -Photos Page 6 of 12

Label and Label Location

Appendix- ZERO -Photos Page 7 of 12 2.2. EUT – Internal View Model ZERO FCC ID: 2BDDP-ZERO Appendix- ZERO -Photos Page 8 of 12 Appendix- ZERO -Photos Page 9 of 12 Appendix- ZERO -Photos Page 10 of 12 Antenna Appendix- ZERO -Photos Page 11 of 12 Appendix- ZERO -Photos Page 12 of 12 ======End======

Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Page 1 of 8 TEST REPORT Referen ce No. .................... : WTD25D10271213W003 FCC ID ................................ : 2BDDP-ZERO Applicant ............................ : Radiacode LTD Address .............................. : Spyrou Kyprianou 10, Germasogeia, 4040 Limassol, Cyprus Manufacturer ..................... : Radiacode LTD Address .............................. : Spyrou Kyprianou 10, Germasogeia, 4040 Limassol, Cyprus Product ............................... : PORTABLE RADIATION DETECTOR Model(s). ............................ : ZERO Brand Name ....................... : RADIACODE Standards........................... : 47CFR FCC Part 2 Subpart J Section 2.1093 Date of Receipt Sample .... : 2025-10-20 Date of Test ....................... : 2025-10-22 to 2025-11-07 Date of Issue ...................... : 2025-11-27 Test Result ......................... : Pass Remarks: The res ults shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group Co., Ltd. Address: No. 77, Houjie Section, Guantai Road, Houjie Town, Dongguan City, Guangdong, China Tel: +86-769-2267 6998 Fax: +86-769-2267 6828 Compiled by: Approved by: Frank Yin / Pro ject Engineer Deval Qin/ Designated Reviewer Reference No.: WTD25D10271213W003 Page 2 of 8 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 2. Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2. CONTENTS ............................................................................................................................................... 2 3. REVISION HISTORY ................................................................................................................................. 3 4. GENERAL INFORMATION ....................................................................................................................... 4 4.1. GENERAL DESCRIPTION OF E.U.T.................................................................................................... 4 4.2. DETAILS OF E.U.T. ......................................................................................................................... 4 4.3. TEST FACILITY ................................................................................................................................ 5 4.4. SUBCONTRACTED ........................................................................................................................... 5 4.5. ABNORMALITIES FROM STANDARD CONDITIONS ................................................................................ 5 5. TEST SUMMARY ...................................................................................................................................... 6 6. RF EXPOSURE ......................................................................................................................................... 7 6.1. PROCEDURES AND REQUIREMENTS ................................................................................................. 7 6.2. CALCULATION METHOD ................................................................................................................... 7 6.3. TEST RESULT ................................................................................................................................. 8 Reference No.: WTD25D10271213W003 Page 3 of 8 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 3. Revision History Test Report No. Date of Receipt Sample Date of Test Date of Issue Purpose CommentApproved WTD25D10271213W003 2025-10-20 2025-10-22 to 2025-11-07 2025-11-27 Original - Valid Reference No.: WTD25D10271213W003 Page 4 of 8 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 4. General Information 4.1. General Description of E.U.T. Product: PORTABLE RADIATION DETECTOR Model(s): ZERO Model Description: N/A Test Sample No.: 1-1/1 Bluetooth Version: 5.2 Hardware Version: 3.0 Software Version: 4.13 4.2. Details of E.U.T. Operation Frequency: 2402~2480MHz Max. RF output power: -4.30dBm Modulation Technology: GFSK Antenna installation: Chip Antenna Antenna Gain: 3.19dBi Note: #: The antenna gain is provided by the applicant, and the applicant should be responsible for its authenticit y, WALTEK lab has not verified the authenticity of its information. Ratings: Built-in battery: Li-Pol 3.7 V, 1500mAh, 5.55Wh Input: DC 5V, 0.8 A Reference No.: WTD25D10271213W003 Page 5 of 8 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 4.3. Test Facility The test facility has a test site registered with the following organizations: ISED CAB identifier: CN0013. Test Firm Registration No.: 7760A. Waltek Testing Group Co., Ltd. Has been registered and fully described in a report filed with the Industry Canada. The acceptance letter from the Industry Canada is maintained in our files. Registration number 7760A, October 15, 2016. FCC Designation No.: CN1201. Test Firm Registration No.: 523476. Waltek Testing Group Co., Ltd. EMC Laboratory has been registered and fully described in a report filed with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in our files. Registration number 523476, September 10, 2019. 4.4. Subcontracted Whether parts of tests for the product have been subcontracted to other labs: Yes No If Yes, list the related test items and lab information: Test Lab: N/A Lab address: N/A Test items: N/A 4.5. Abnormalities from Standard Conditions None. Reference No.: WTD25D10271213W003 Page 6 of 8 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 5. Test Summary Test Items Test Requirement Result Maximum Permissible Exposure (Expo…

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Approval sheet Page 1 of 10 ASC_RGFRA9937380A3T_V05 Oct. 2011 FREE ANTENNA RGFRA Series / Pb free Halogens Free Product 2.4 GHz ISM Band Working Frequency P/N: RGFRA9937380A3T *Contents in this sheet are subject to change without prior notice. Approval sheet Page 2 of 10 ASC_RGFRA9937380A3T_V05 Oct. 2011 FEATURES 1. Surface Mounted Devices with a small dimension of 9.9 x 3.7 x 3.8 mm 3 . 2. Able to be placed above/on ground plane. No external keep-out zone (empty space) required, which relatively save more space on PC board. 3. Allow placing other components besides antenna or on the backside of PCB right underneath antenna. 4. No sensitive to environmental includes hand effects. Ideal for Handheld devices application. APPLICATIONS 1. Bluetooth, ISM 2.4GHz in samrt phone, PDA and other handheld devices. 2. ISM band 2.4GHz applications DESCRIPTION Walsin Technology Corporation develops a new antenna specified for 2.4 GHz ISM Band application, as shown in below “CONSTRUCTION”. It’s application typically located on this unlicensed frequency band which range covers from 2.4GHz to 2.4835GHz. To fulfill the friendly usage for antenna, this antenna has been designed to no empty space required and no sensitive to environmental through Walsin’s superior product design via 3D EM Simulation Skill. CONSTRUCTION Fig 1. Outline of Free Antenna – RGFRA9937380A3T DIMENSIONS Figure Dimension(mm) Port definition L 9.9 ± 0.15 - W 3.7 ± 0.15 - T 3.8 ± 0.20 - P w 3.48 ± 0.10 Pad width P 1 1.4 ± 0.10 Soldering terminal P 2 1.9 ± 0.10 Feed terminal Note: The prat number of 9937-3 is RGFRA9937380A3T P 3 2.4 ± 0.15 Ground terminal Approval sheet Page 3 of 10 ASC_RGFRA9937380A3T_V05 Oct. 2011 ELECTRICAL CHARACTERISTICS RGFRA9937380A3T Specification Marking 9937-3 *¹ Central Frequency(GHz) Frequency(GHz) 2.55GHz *³ Gain 2 dBi (Typical) VSWR 2 max. Polarization Linear Azimuth Bandwidth Omni-directional Impedance 50Ω Rated Power (max.) 1 W Operation Temperature -40 ̊C ~ +85 ̊C Remark: 1. RGFRA9937380A3T 2. The specification is defined based on the test board dimension as in below 3. Should be fine tuned to 2450± ±± ±50MHz during application. Antenna on Test Board : (Feed point should close to board edge) Bottom View Top View (no empty area required) 50ohm SMA connector 110 Antenna Area Approval sheet Page 4 of 10 ASC_RGFRA9937380A3T_V05 Oct. 2011 Antenna S11 on Test Board -10dB bandwidth 140MHz Approval sheet Page 5 of 10 ASC_RGFRA9937380A3T_V05 Oct. 2011 SOLDER LAND PATTERN DESIGN Figure Symbol Dimension Feed, connected to 50ohm transmission line Ground, connect to ground Soldering pads Antenna outline Unit: mm RADIATION PATTERN Radiation Pattern and Gain were dependent on measurement board design. The specification of RGFRA9937380A3T antenna was measured based on the test board size and the antenna installation position as shown in the below: Y X Z 110 Approval sheet Page 6 of 10 ASC_RGFRA9937380A3T_V05 Oct. 2011 Horizontal Vertical Y - Z Plane Average Gain= -3.185 dBi Peak Gain = 0.95dBi Average Gain = -4.26 dBi Peak Gain= -4.05dBi Average Gain=-8.03 dBi X - Z Plane Average Gain= -0.99 dBi Peak Gain= 3.05 dBi Average Gain= -4.10dBi Peak Gain= 2.49 dBi Average Gain= -2.47 dBi X - Y Plane Average Gain= -1.543 dBi Peak Gain= 3.19 dBi Average Gain= -2.65 dBi Peak Gain= -4.48 dBi Average Gain= -8.02 dBi z Y z Y z X z X X Y X Y Approval sheet Page 7 of 10 ASC_RGFRA9937380A3T_V05 Oct. 2011 RELIABILITY TEST Test item Test condition / Test method Specification Solderability JIS C 0050-4.6 JESD22-B102D *Solder bath temperature：235 ± 5°C *Immersion time：2 ± 0.5 sec *Solder：Sn3Ag0.5Cu for lead-free At least 95% of a surface of each terminal electrode must be covered by fresh solder. Leaching (Resistance to dissolution of metallization) IEC 60068-2-58 *Solder bath temperature：260 ± 5°C *Leaching immersion time：30 ± 0.5 sec *Solder : SN63A Loss of metallization on the edges of each electrode shall not exceed 25%. Resistance to soldering heat JIS C 0050-5.4 *Preheating temperature：120~150°C, 1 minute. *Solder temperature：270±5°C *Immersion time：10±1 sec *Solder：Sn3Ag0.5Cu for lead-free Measurement to be made after keeping at room temperature for 24±2 hrs No mechanical damage. Samples shall satisfy electrical specification after test. Loss of metallization on the edges of each electrode shall not exceed 25%. Drop Test JIS C 0044 *Height：75 cm *Test Surface：Rigid surface of concrete or steel. *Times：6 surfaces for each units；2 times for each side. No mechanical damage. Samples shall satisfy electrical specification after test. Adhesive Strength of Termination JIS C 0051- 7.4.3 *Pressurizing force： 5N(≦0603)；10N(>0603) *Test time：10±1 sec No remarkable damage or removal of the termination. Bending test JIS C 0051- 7.4.1 The middle part of substrate shall be pressurized by means of the pressurizing rod at a rate of about 1 mm/s per second until the deflection becomes 1mm/s and then pressure shall be maintained for 5±1 sec. Measurement to be made after keeping at room temperature for 24±2 hours No mechanical damage. Samples shall satisfy electrical specification after test. Approval sheet Page 8 of 10 ASC_RGFRA9937380A3T_V05 Oct. 2011 Temperature cycle JIS C 0025 1. 30±3 minutes at -40°C±3°C, 2. 10~15 minutes at room temperature, 3. 30±3 minutes at +85°C±3°C, 4. 10~15 minutes at room temperature, Total 100 continuous cycles Measurement to be made after keeping at room temperature for 24±2 hrs No mechanical damage. Samples shall satisfy electrical specification after test. Vibration JIS C 0040 *Frequency：10Hz~55Hz~10Hz(1min) *Total amplitude：1.5mm *Test times：6hrs.(Two hrs each in three mutually perpendicular directions) No mechanical damage. Samples shall satisfy electrical specification after test. High temperature JIS C 0021 *Temperature：85°C±2°C *Test duration：1000+24/-0 hours Measurement to be made after keeping at room temperature for 24±2 hrs No mechanical damage. Samples shall satisfy electrical specification after test. Humi…

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Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Pa ge 1 of 33 TEST REPORT Referen ce No. .................... : WTD25D10271213W002 FCC ID ................................ : 2BDDP-ZERO Applicant ............................ : Radiacode LTD Address .............................. : Spyrou Kyprianou 10, Germasogeia, 4040 Limassol, Cyprus Manufacturer .................... : Radiacode LTD Address .............................. : Spyrou Kyprianou 10, Germasogeia, 4040 Limassol, Cyprus Product ............................... : PORTABLE RADIATION DETECTOR Model(s). ............................ : ZERO Brand Name ....................... : RADIACODE Standards........................... : FCC 47CFR Part 15.247 Date of Receipt Sample .... : 2025-10-20 Date of Test ....................... : 2025-10-22 to 2025-11-07 Date of Issue ...................... : 2025-11-27 Test Result ......................... : Pass Remarks: The res ults shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group Co., Ltd. Address: No. 77, Houjie Section, Guantai Road, Houjie Town, Dongguan City, Guangdong, China Tel: +86-769-2267 6998 Fax: +86-769-2267 6828 Compiled by: Approved by: Frank Yin / Pro ject Engineer Deval Qin/ Designated Reviewer Reference No.: WTD25D10271213W002 Page 2 of 33 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 2 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 CONTENTS ............................................................................................................................................... 2 3 REVISION HISTORY ................................................................................................................................. 4 4 GENERAL INFORMATION ....................................................................................................................... 5 4.1 General Description of E.U.T. ....................................................................................................... 5 4.2 Details of E.U.T. ............................................................................................................................ 5 4.3 Channel List .................................................................................................................................. 5 4.4 Test Facility ................................................................................................................................... 6 4.5 Subcontracted ............................................................................................................................... 6 4.6 Abnormalities from Standard Conditions ...................................................................................... 6 4.7 Test Mode ..................................................................................................................................... 6 5 TEST SUMMARY ...................................................................................................................................... 7 6 EQUIPMENT USED DURING TEST ......................................................................................................... 8 6.1 Equipments List ............................................................................................................................ 8 6.2 Description of Support Units ......................................................................................................... 9 6.3 Measurement Uncertainty ............................................................................................................ 9 6.4 Test Equipment Calibration .......................................................................................................... 9 7 DUTY CYCLE .......................................................................................................................................... 10 8 CONDUCTED EMISSION ....................................................................................................................... 11 8.1 E.U.T. Operation ......................................................................................................................... 11 8.2 EUT Setup .................................................................................................................................. 11 8.3 Measurement Description ........................................................................................................... 11 8.4 Conducted Emission Test Result ............................................................................................... 1 2 9 RADIATED EMISSIONS ......................................................................................................................... 14 9.1 EUT Operation ............................................................................................................................ 14 9.2 Test Setup .................................................................................................................................. 15 9.3 Spectrum Analyzer Setup ........................................................................................................... 16 9.4 Test Procedure ........................................................................................................................... 17 9.5 Corrected Amplitude & Margin Calculation ................................................................................ 17 9.6 Summary of Test Results ........................................................................................................... 18 10 CONDUCTED SPURIOUS EMISSIONS ..................…

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Appendix- ZERO -Photos Page 1 of 12 1. Test Setup photos Model ZERO FCC ID: 2BDDP-ZERO 1.1 Photograph – Conducted Emission For Conducted Emission Test Site 1# 1.2 Photograph – Radiated Emissions For 9kHz-30MHz Test Site 2# Appendix- ZERO -Photos Page 2 of 12 For 30MHz-1000MHz Test Site 2# For Above 1GHz Test Site 1#