FCC ID: ST2-ITD73XXRH Temperature & Humidity Sensor

Operation Temperature(Sensor) FCC regulatory conformance 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.

(2) This device must accept any interference received, including interference that may cause undesired operation. 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 installa-

tion. 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 o 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 dierent from that to which the receiver is connected.

-Consult the dealer or an experienced radio/TV technician for help NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modications to this equipment. Such modications could void the users authority to operate the equipment. RF Exposure This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. IC regulatory conformance This device complies with CAN ICES-3 (B)/NMB-3(B). This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subjectto the following two condi-

tions:

(1) this device may not cause harmful interference, and

(2) thisdevice must accept any interference received, including interference that may cause undesiredoperation. Cetappareilestconforme la norme CAN ICES-3 (B)/NMB-3 (B). Le prsentappareilestconforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitatio-

nestautorise aux deux conditions suivantes :

(1) l'appareil ne doit pas produire de brouillage, et

(2) l'utilisateur de l'appareil doit accepter tout brouillageradiolectriquesubi, mmesi le brouillageest susceptible d'encompro-

mettre le fonctionnement. RF Exposure This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Cetquipementestconforme aux limites dexposition aux rayonnements de la IC tablies pour unenvironnement non contr. Cetquipement doit tre install et fonctionner au moins20cm dedistance dun radiateurou de votre corps.

Operation Temperature(Sensor) FCC regulatory conformance 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.

(2) This device must accept any interference received, including interference that may cause undesired operation. 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 installa-

tion. 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 o 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 dierent from that to which the receiver is connected.

-Consult the dealer or an experienced radio/TV technician for help NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modications to this equipment. Such modications could void the users authority to operate the equipment. RF Exposure This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. IC regulatory conformance This device complies with CAN ICES-3 (B)/NMB-3(B). This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subjectto the following two condi-

tions:

(1) this device may not cause harmful interference, and

(2) thisdevice must accept any interference received, including interference that may cause undesiredoperation. Cetappareilestconforme la norme CAN ICES-3 (B)/NMB-3 (B). Le prsentappareilestconforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitatio-

nestautorise aux deux conditions suivantes :

(1) l'appareil ne doit pas produire de brouillage, et

(2) l'utilisateur de l'appareil doit accepter tout brouillageradiolectriquesubi, mmesi le brouillageest susceptible d'encompro-

mettre le fonctionnement. RF Exposure This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Cetquipementestconforme aux limites dexposition aux rayonnements de la IC tablies pour unenvironnement non contr. Cetquipement doit tre install et fonctionner au moins20cm dedistance dun radiateurou de votre corps.

6 January 2022 FCC ID: ST2-ITD73XXRH Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To whom it may concern:

We, the undersigned, hereby authorize Mr. Wu Xuewen from Shenzhen BALUN Technology Co., Ltd., to act on our behalf in all manners with applicable authorities directly relating to FCC equipment authorization for FCC ID: ST2-ITD73XXRH, including signing of all documents directly relating to these matters. Any and all acts carried out by Shenzhen BALUN Technology Co., Ltd. on our behalf shall have the same effect as acts of our own. 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. 853(a). Regards, Sherre Staves VP, Engineering CenTrak 826 Newtown-Yardley Road | Newtown, PA 18940 | Phone 215.860.2928 | Fax 215.359.0659 | www.centrak.com CenTrak 2020. All Rights Reserved | CenTrak is a trademark of CenTrak, Inc. Proprietary and Confidential Information.

6 January 2022 FCC ID: ST2-ITD73XXRH Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 FCC Confidentiality Request In accordance with 0.459 & 0.457 of CFR 47, please, accept this letter as official notification that the following constitutes Confidential Information. CenTrak requests that the following are kept as confidential for reference ID: FCC ID: ST2-ITD73XXRH. The information provided is for the sole purpose of inclusion as exhibits in the Application for Certificate of the FCC ID stated above:

Exhibit Type Block Diagram Schematics Operational Description Part list And below exhibit kept short-term confidential (180 days):

External photos Test setup photos Internal photos User manual File Name Block Diagram.pdf Schematics.pdf Operational Description.pdf BOM.pdf External photos.pdf test photo.pdf Internal photos.pdf User manual.pdf These documents contain detailed system and equipment description and related information about the product which CenTrak Inc considers to be confidential proprietary, a custom design and, otherwise, not releasable to the general public. Since this design is a basis from which future technological products will evolve, CenTrak Inc considers this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Regards, Sherre Staves SVP, Engineering CenTrak 826 Newtown-Yardley Road | Newtown, PA 18940 | Phone 215.860.2928 | Fax 215.359.0659 | www.centrak.com CenTrak 2020. All Rights Reserved | CenTrak is a trademark of CenTrak, Inc. Proprietary and Confidential Information.

Date: 5 January 2022 Declaration Of Identity To Whom It May Concern:

With regards to the application for Model:ITD-7366R H, According to the designer, CenTrak Inc we hereby declare the difference between Model:ITD-7366R H,and Model: ITD-7333R Has;

Basic Model Number: ITD-7366R H Basic Brand Name:CENTRAK Basic Product Name:Temperature& Humidity Sensor Basic Certificate Number:

New/Additional Model Number(s): ITD-7333R H Declare the Circuit, PCB Layout, Electrical Parts, and appearance of the following product(s) are identical to the basic model:

Except the following(s):

Different model numbers used to distinguish multiple business purposes. Yours Sincerely, Sherre Staves SVP, Engineering