FCC ID: 2AU4DDBZ Smart Thermometer Hygrometer

User Manual Smart Thermometer Hygrometer Model: STH51 This user manual contains important information regarding the operation of your smart thermometer hygrometer. Ensure you read this user manual fully before installing and operating the listener. If you are installing this device for use by others, you must leave this manual (or a copy of it) with the end user. Introduction The wireless thermometer hygrometer supports all basic functions as well as smart functions such as remote monitoring and temperature & humidity graphs. This thermometer hygrometer is reliable and easy to use for homes, greenhouses, and more. Product Overview LED Indicator Pair Button Battery Compartment Lanyard Loop Tab Package Contents Thermometer Hygrometers Lanyards Stickers AAA Batteries User Manual Device Setup Download the X-Sense Home Security App To download the X-Sense Home Security App, scan the QR code or search for X-Sense Home Security in the Apple App Store or Google Play Store. Sign up with a valid email address. If you already have an account, make sure the app is updated to the latest version. Note: Make sure your smartphone supports iOS 11 and higher, or Android8.0 and higher. Connect theThermometer Hygrometer to the Base Station The thermometer hygrometer can be connected to the base station through the wireless network. When the listener is connected to the base station, you will receive push notifications wherever you are to stay informed of the device status. Note: Before adding devices to the system, make sure the base station has been successfully added to the app. 1. Tap"

", and select Thermo-hygrometers in the product list. Then, tap Next to enter the pairing page. 2. Enter a name for the thermometer hygrometer. Then, select the room in which it is installed and tap Next. 3. Remove the back cover from the device. Tap Next. 4. Install the battery andensure the battery polarities are matched correctly. Then, tap Next. 5. Follow the prompts on the page by quickly pressing the Pair button twice on the deviceuntil the LED flashes blue rapidly, indicating that the device is waiting to connect to the base station. 6. Tap Next to add the device. You will hear Ready to add the device. 7. After successfully connected, you will hear Device added and the Device added page will appear. Then you can find the thermometer hygrometer in the device list. 8. If you want to add multiple devices into the system, please repeat the above steps. NOTE:

1. If you fail to add the device to the network within 60 seconds, the device will automatically exit the network configuration.To re-enter the network configuration, you need to repeat the above steps. 2. After adding the thermometer hygrometer, write its name on the provided sticker and attach it to the device for easy management in the future. Installing the Lanyard (Optional) Open the back cover. Thread the lanyard through the tab, making sure it is securely attached. Close the back cover. The device can be hung in any desired location with the lanyard. Using Your Thermometer Hygrometer Set the Alarm: You can set the temperature and humidity range in the app. When the temperature and humidity level exceed this range, an app push notification will be sent immediately, and the base station will sound an alarm at the same time (You can turn off the alarm function of the base station and only choose the push notifications). To select the temperature and humidity you want to track, use the slider or make a selection from the dropdown list. Unit Switch: Switch temperature units displayed in the appto Fahrenheit (F) or Celsius (C). Export Data: Export data in CSV format after entering your email address and confirming the date/time range. You can create a data export task by toggling Scheduled Export to choose from daily, weekly, and monthly. Device Test: You can complete the test by tapping Device Test button in the app to make sure the device is functioning properly. Technical Specifications Power Supply Voltage Battery Capacity Product Life Battery Life Material Alarm Volume 2 AAA batteries (Replaceable) 3 V DC 1,200 mAh 5 years 1 year ABS No sound when the temperature or humidity exceeds or falls below the set level (the base station will sound and an app push notification will be sent) Indicator Light Red/Blue Operating Temperature

-4140F (-2060C) Operating Humidity 0100% RH Temperature Accuracy

-432F

(-200C) Typical accuracy:0.360.72F (0.20.4C); Maximal accuracy: 0.721.26F (0.40.7C) Humidity Accuracy 32140F

(060C) Typical accuracy: 0.36F (0.2C); Maximal accuracy:

0.72F (0.4C) 1090%RH Typical accuracy: 2%RH; Maximal accuracy: 3.5%RH 010%/90100%RH Typical accuracy: 23%RH; Maximal accuracy: 3.55%RH Note: The above humidity accuracy data is measured at a constant temperature of 77F

(25C). When the temperature changes, the accuracy may be affected. Battery Replacement 1. Remove the back battery cover of the device using the bottom notch. 2. Install the batteries. Ensure battery polarities are matched correctly. 3. Close the back cover by gently pressing it back into place until it clicks. Maintenance 1. The thermometer hygrometer is rated to workin environments with temperaturesranging from

-4F to 140F (-20C to 60C)and humidity from 0to 100%RH. 2. Please, always handle these devices withcare and do not attempt to disassemble. 3. Do not immerse these devices in water. Troubleshooting Problem Cause Solution The thermometer hygrometer cannot be connected to the base station. The thermometer hygrometer does not enter paring mode. Quickly press the Pair button twice on the thermometer hygrometer until it flashes blue rapidly, indicating it has entered pairing mode. or notifications Push failed, app prompts show that the operation failed. the The devices batteries have run out. Replace the batteries. The app push notification permission is disabled. Turn on the push notification permission on the phone. is not The base station within the network coverage of the router. the communication The between thermometer hygrometer and base station is not stable or they are too far apart. The distance between the base station and the router should be within 170 ft (50 m). Please ensure that the base station is always within the network coverage of the router. Reduce the obstacles between the thermometer hygrometer and base station. The maximum distance between the device and the base station in an open environment is 1,700 ft (500 m). The network connection of the router and the mobile phone is abnormal. the communication The between thermometer hygrometer and base station is not stable or they are too far apart. batteries The thermometer have run out. of the hygrometer Make sure the network connection of the router and the mobile phone is normal. Reduce the obstacles between the thermometer hygrometer and base station. The maximum distance between the device and the base station in an open environment is 1,700 ft (500 m). Replace the batteries. Low battery warning. Replace the batteries. The app shows that the thermometer hygrometer is offline. The app prompts low battery, and the LED indicator flashes once every 60 seconds. FCC Statement 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. 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. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FAQ Can it be used in the fridge or freezer?

Using the thermo-hygrometer in a refrigerator or freezerwill shorten the battery life and affect the connection of the device in low temperature environments. The recommended ambient temperature for prolonged operation is 14140F (-1060C). Can it be used in a high humidity environment for a long time?

Since the device is not waterproof, it is not recommended to use the device in a high-humidity environment (above 80% RH water condensing) for a long period of time. How do I set the temperature and humidity alarm range?

Go to Device Settings. Under the Temperature Alarm and Relative Humidity Alarm settings, select the temperature and humidity you want to track by moving the slider or choosing from the dropdown list. How do I export data?

To export data, start by tapping on the thermometer hygrometer onthe app's device pageto access the data page. Once you're on the data page, scroll down to the bottom and tap the "Export Data"

button. Keep in mind that you can only export a maximum of 6 months (180 days) worth of data at a time, so make sure the time span you select falls within this range. If you need to export data for the entire past year, you will need to do so in two separate batches. How do I calibrate the temperature and humidity?

The device has been calibrated by precision instruments and usually does not require recalibration. If you still want to calibrate, you can go to Device Settings and calibrate the temperature and humidity in the Calibration setting. How do I distinguish which device in the app corresponds to the real device?

The box your device comes in contains stickers. After you add a device to the app, label it by writing its name in the app and on the provided sticker and sticking it to the device. To distinguish, use the app's test feature. To test the device, go to "Device Settings" and select

"Device Test." During the 10 seconds, the LED light during the test will remain solid blue. Environmental Protection Waste electrical products should not be disposed of with household waste. Please recycle where facilities are available. Please check with your local authorities or retailers for recycling advice. Manufacturer and Service Information X-Sense Innovations Co., Ltd. Address: B4-503, Kexing Science Park, 15 Keyuan Road, Shenzhen, 518057, CHINA Email: support@x-sense.com

DATE : 2023-07-06 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Jason Wu of Global United Technology Services Co., Ltd.and No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commissions regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with X-Sense Innovations Co., Ltd. and B4 503D,Tower B, Kexing Science Park, No15 Keyuan Road, Technology Park Community, Yuehai Avenue, Nanshan District, Shenzhen, China Signature:

Name: li xu Title: Manager Company: X-Sense Innovations Co., Ltd.

X-Sense Innovations Co., Ltd. DATE : 2023-07-06 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AU4DDBZ Product Name: Smart Thermometer Hygrometer Request for Confidentiality To Whom It May Concern, Pursuant to the provisions of the Commissions 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);

External Photos Test Setup Photos Internal Photos 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. Signature:

Name: li xu Title: Manager

X-Sense Innovations Co., Ltd. Covered Equipment Certification Attestation Letter 7/6/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2AU4DDBZ X-Sense Innovations Co., Ltd. certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not covered equipment. X-Sense Innovations Co., Ltd. certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. Signed:

Printed name: li xu Title: Manager Company Name: X-Sense Innovations Co., Ltd. Date: 7/6/2023

X-Sense Innovations Co., Ltd. U.S. Agent Designation for Service of Process -

Certification Attestation Letter 7/6/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2AU4DDBZ FRN of applicant: 0028970382 Per section 2.911(d)(7) of the FCC rules, X-Sense Innovations Co., Ltd. certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process:

Company Name: Baihetian Innovative Solutions FCC Registration Number(FRN): 0033401605 Physical U.S. Company Address: 6837 Chase Rd, Dearborn, MI 48126, USA Contact Person: Kenneth Young Agent Email Address: ken.young@baihetiansolutions.com 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. Applicant Signed:

Agent Signed (if different to Applicant):

Signed:

Signed:

Printed name: li xu Title: Manager Company Name: X-Sense Innovations Co., Ltd. Date: 7/6/2023 Printed name: Kenneth Young Title: Manager Company Name: Baihetian Innovative Solutions Date: 7/6/2023

*the applicant must designate a contact located in the United States for purposes of acting as the applicants 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.