YAHTFX-3TXWireless Telephone Signaler

USER MANUAL Parts & Function LED indicator Line Phone Test Button Battery Lock Lever Mounting Hole Mounting Plate/ Battery Cover Installation Battery Installation o / 7mm 25mm Mark 2 holes on the wall using a pencil Release the lock and slide to open the cover Drill 2 holes follow the marking Fix the mounting plate with screws provided Slide the transmitter until hear a click sound 28mm Wall socket Phone + + Open the battery cover Insert a CR2032 Battery Pairing 1. Make the receiver into the pairing mode follow the receiver manual 2. Press the test button once on the transmitter Battery low indication Once the transmitter unit detect battery voltage is low, The battery low information will be sent to the receiver for display Code Conflict If the transmitter coding is the same as another transmitter you must change the code. When you have changed the code re-pair the transmitter is needed. Open the cover, Open the cover. Press and hold the test button, insert the battery whilst holding the button for 5 seconds. The LED will flash 5 times when a new code is generated This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential the 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 to an outlet on a circuit different from that to which the receiver is connected. 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. Note: Modifications to this product will void the user's authority to operate this equipment. RoHS

Venture Global Limited U.S. Agent Designation for Service of Process - Certification Attestation Letter June 21, 2023 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: YAHTFX-3TX FRN: 0019696889 Per section 2.911 (d)(?) of the FCC rules, (" Venture Global Limited") certifies that the equipment for which authorization is sought is designated to the following U.S. Designated agent* for service of process: Company Name: Physical U.S. Company Address: Agent name: Agent Email Address: FRN: Global Product Services & Consultation LLC 328 W Palm Ave, Monrovia. CA91016 ChiS.Chan [email protected] 0033406703 The above contact person accepts the obligation for service of process. The applicant 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. Signed: Printed name: CHOW,HING SANG ADAM Title: DIRECTOR Company Venture Global Limited Name: Date: June 2, 2023 Designated Agent Signed: (Required, if different to Applicant): Signed t;;/: JH Printed name: ChiS.Chan Title: Technical Director Company Global Product Services & Name: Consultation LLC Date: 2023-06-06 * the applicant must designate a contact located in the United States for purposes of acting as the applicant's agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. S C3065106

External Photos

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 thjat may cause undesired operation FCC ID: YAHTFX-3TX Freq: 914.8MHz Model: TFX-303 Power: DC3V CR2032 Made in China ww Liu Wireless Telephone Signaler Nov 24, 2022

Internal Photos

FCC ID: YAHTFX-3TX RF Exposure Evaluation LIMIT The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 - - f/300 6 1500–100,000 - - 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 - - f/1500 30 1500–100,000 - - 1.0 30 Note: f = frequency in MHz EVALUATION METHOD Transmission formula: Pd = (Pout*G)/(4*pi*r 2 ) Where Pd = power density in mW/cm 2 , Pout = output power to antenna in mW, G = gain of antenna in linear scale; Pi = 3.1416, R = distance between observation point and center of the radiator in cm TEST RESULT Passed Not Applicable Frequency (MHz) Field strength #1 (dBμV/m) Maximum Output Power(dBm) Antenna Gain #2 (dBi) Minimum use distance #3 (cm) Power density (mW/cm 2 ) Power density limit (mW/cm 2 ) Result 914.8 84.86 -10.34 0 20 0.000018 0.610 PASS Note: #1: refer to the RF report E [dBμV/m] = EIRP [dBm] + 95.2, for d = 3 m. Maximum Output Power(dBm)= EIRP [dBm]- Antenna Gain. #2: The antenna gain is provided by the applicant, and the applicant should be responsible for its authenticity, HTW lab has not verified the authenticity of its information. #3 is the distance from observation point to the antenna which is declared by the applicant.

Page: 1 of 31 TEST REPORT For RF Report No. ...................................... : CHTEW23040084 Report Verification: Project No.................................： SHT2304014107EW FCC ID ............................................. : YAHTFX-3TX Applicant’s name ........................... : Venture Global Limited Address ............................................. : Room 808, 8/F., Hilder Centre, 2 Sung Ping Street, Kowloon Test item description .................... : Wireless Telephone Signaler Trade Mark ....................................... : - Model/Type reference ....................... : TFX-303 Listed Model(s) ................................. : - Standard ......................................... : FCC CFR Title 47 Part 15 Subpart C § 15.249 Date of receipt of test sample..........: Apr.12, 2023 Date of testing.............................: Apr.12, 2023- Apr.23, 2023 Date of issue...............................: Apr.24, 2023 Result .................. ........................: PASS Compiled by ( position+printedname+signature) ... : File administrators Fanghui Zhu Supervised by (position+printedname+signature) .... : Project Engineer Xiaodong Zhao Approved by (Position+Printed name+Signature): RF Manager Hans Hu Testing Laboratory Name ............. : Shenzhen Huatongwei International Inspection Co., Ltd. Address ............................................. : 1/F, Bldg 3, Hongfa Hi-tech Industrial Park, Genyu Road, Tianliao, Gongming, Shenzhen, China Shenzhen Huatongwei International Inspection Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Huatongwei International Inspection Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Huatongwei International Inspection Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. The test report merely correspond to the test sample. Report No.: CHTEW23040084 Page: 2 of 31 Issued: 2023-04-24 Shenzhen Huatongwei International Inspection Co., Ltd. Report Template Version: V05(2023-03) Contents 1. TEST S T AN D AR D S A N D R E P O R T V E R S I O N ......................................... 3 1.1. Test Standards 3 1.2. Report version 3 2. TEST DESCRIPTION ..................................................................... 4 3. SUMMARY ............................................................................... 5 3.1. Client Information 5 3.2. Product Description 5 3.3. Radio Specification Description 5 3.4. Testing Laboratory Information 5 4. TEST CONFIGURATION ................................................................. 6 4.1. Test frequency list 6 4.2. Test mode 6 4.3. Descriptions of Test mode 6 4.4. Test sample information 7 4.5. Support unit used in test configuration and system 7 4.6. Testing environmental condition 7 4.7. Statement of the measurement uncertainty 8 4.8. Equipment Used during the Test 9 5. TEST CONDITIONS AND RESULTS ................................................... 11 5.1. Antenna Requirement 11 5.2. AC Conducted Emission 12 5.3. 20dB bandwidth 13 5.4. 99% Occupied Bandwidth 15 5.5. Duty Cycle 17 5.6. Radiated field strength of the fundamental signal 19 5.7. Radiated Band edge Emission 21 5.8. Radiated Spurious Emission 23 6. TEST SETUP PHOTOS ................................................................. 28 7. EXTERNAL AND INTERNAL PHOTOS ................................................. 29 7.1. External Photos 29 7.2. Internal Photos 31 Report No.: CHTEW23040084 Page: 3 of 31 Issued: 2023-04-24 Shenzhen Huatongwei International Inspection Co., Ltd. Report Template Version: V05(2023-03) 1. TEST STAND ARDS AND REPORT VERSION 1.1. Test Standards The tests were performed according to following standards: ‒ FCC CFR Title 47 Part 15 Subpart C § 15.249: Operation within the bands 902-928 MHz, 2400-2483.5 MHz, 5725-5875 MHZ, and 24.0-24.25 GHz ‒ ANSI C63.10:2013: American National Standard for Testing Unlicensed Wireless Devices 1.2. Report version Revision No. Date of issue Description N/A 2023-04-24 Original Report No.: CHTEW23040084 Page: 4 of 31 Issued: 2023-04-24 Shenzhen Huatongwei International Inspection Co., Ltd. Report Template Version: V05(2023-03) 2. TEST DESCRIPTION Report clause Test Items Standard Requirement Result Test Engineer 5.1 Antenna Requirement 15.203 PASS Xiaoqin Li 5.2 AC Conducted Emission 15.207 N/A - 5.3 20dB Bandwidth 15.215/15.249 PASS Xiaoqin Li 5.4 99% Occupied Bandwidth - PASS *1 Xiaoqin Li 5.5 Duty cycle - PASS *1 Xiaoqin Li 5.6 Field strength of the Fundamental signal 15.249(a) PASS Haoxin Luo 5.7 Radiated Band Edge Emission 15.249(a)15.205/15.209 PASS Haoxin Luo 5.8 Radiated Spurious Emission 15.249(d)15.205/15.209 PASS Yifan Wang Note: ‒ The measurement uncertainty is not included in the test result. ‒ *1: No requirement on standard, only report the test data. Report No.: CHTEW23040084 Page: 5 of 31 Issued: 2023-04-24 Shenzhen Huatongwei International Inspection Co., Ltd. Report Template Version: V05(2023-03) 3. SUMMARY 3.1. Client Information Applicant: Venture Global Limited Address: Room 808, 8/F., Hilder Centre, 2 Sung Ping Street, Kowloon Manufacturer: Venture Global Limited Address: Room 808, 8/F., Hilder Centre, 2 Sung Ping Street, Kowloon 3.2. Product Description Main unit information: Product Name: Wireless Telephone Signaler Trade Mark: - Model No.: TFX-303 Listed Model(s): - Power supply: DV 3.0 from lithium battery Hardware version: 1.0 Software version: 1.0 3.3. Radio Specification Description Modulation: FSK Operation frequency: 914.8MHz Channel number: 1 Antenna type: Internal spring Antenna gain: 0dBi 3.4. Testing Laboratory Information Laboratory Name Shenzhen Huatongwei International Inspection Co., Ltd. Laboratory Location 1/F, Bldg 3, Hongfa Hi-tech Industrial Park, Genyu Road, Tianliao, Gongming, Shenzhen, …

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TEST SETUP PHOTOS Radiated Emission