FCC ID: 2AZ4UGMX-GAS-SAFE GEOZIEL-AIR

GEOMEXSOFT Ltd. Product Manual Geoziel Indoor Carbon Monoxide Detector Revision Date May 14, 2021

(Version with Communication Function ) Page Document GMX-CO_SAFE

-BT_WIFI No. Enacted/Revi sed No. 0 1 1. Product Description The Geoziel Indoor Carbon Monoxide Detector developed and manufactured by our company is a product equipped with an alarm function that can prevent fatal accidents and gas explosion accidents caused by carbon monoxide poisoning by measuring carbon monoxide gas in indoor air more easily with a semiconductor gas detector. 2. Product Main Function 2.1 Precise detection of carbon monoxide between 10PPM and 1000PPM.

<CO Sensor SPEC>

The product accurately measures carbon monoxide generated in everyday life Characteristics of sensitivity ()

(Rs,gas / Rs,air

-CO(10PPM) 0.75 0.85, CO(100PPM) 0.30 0.60

-Tobacco(2,000ppm-ESSE, KOREA) 0.6

-Ethyl alcohol vapor (50ppm) 0.50

(Sample is gathered by using injector(10) 10mm/sec speed) Operating

-Temp. : -10 ~ 50, Humidity : 5 ~ 90%RH, Non-condensing environment

-Storage Temp. : -10 ~70, Humidity : 0 ~90%RH

-Recovering Time(T90) : Less then 30sec Reaction time(T90) 2.2 Danger Alarm

(1) When the carbon monoxide measurement value rises above a certain level, the product provides an immediate alarm to the user by using the built-in 85dB alarm buzzer and lamp.

(2) When the value measured by the built-in temperature sensor lasts more than 50 for more than one minute, the product judges it as a high-temperature condition and provides an immediate alarm to the user. 2.3 Built-in Battery

(1) The product has a built-in 2000mah rechargeable lithium-ion battery in 3.7V 1 cell type and can be used continuously for up to eight hours.

(2) The product can be charged and reused through a micro USB-C connector. GEOMEXSOFT Ltd. Product Manual Geoziel Indoor Carbon Monoxide Detector Revision Date May 14, 2021

(Version with Communication Function ) Page Document GMX-CO_SAFE

-BT_WIFI No. Enacted/Revi sed No. 0 2 2.4 Bluetooth communication Function Support

(1) The product supports the communication function based on Bluetooth v4.2 BR/EDR BLE and allows the user to check the operation information such as sensor measurement value and battery level on a smartphone through its dedicated application. The user can use the bluetooth wireless communication function through its dedicated software on a smartphone with Android 4.0 or higher, and this function may not be able to operate normally due to the technical characteristics, such as interference and external noise. 3. Product Specification Table Product Performance Power

- Measurement of carbon monoxide (CO) and alarm in the event of a danger situation

- Measurement of high temperature situation and alarm

- Built-in rechargeable lithium-ion battery

(up to eight hours of continuous use time)

- Charging the battery using the USB-C connector with 5V, 1A and higher (5.5 hours of full charge time) Alarm

- Alarm of 85dB (30cm distance from the product)

- Using the dedicated application on smartphones with Bluetooth Android 4.0 or higher

- Real-time confirmation of sensor measurement value and alarm control function 4. Precautions The product is a detector equipped with semiconductor-type carbon monoxide sensors and it has different detection performance depending on the usage environment. The normal operation may not be possible in the following situation:

High pollution that lasts for a long time (volatile gas, etc.);

Battery low power state; and A situation where the product has been exposed for a long time in the indoor environment with a continuous high temperature of 40 or higher. GEOMEXSOFT Ltd. Product Manual Geoziel Indoor Carbon Monoxide Detector Revision Date May 14, 2021

(Version with Communication Function ) Page Document GMX-CO_SAFE

-BT_WIFI No. Enacted/Revi sed No. 0 3 5. Product Configuration

(1) Product Configuration Diagram

(2) Product Structure Description GEOMEXSOFT Ltd. Product Manual Geoziel Indoor Carbon Monoxide Detector Revision Date May 14, 2021

(Version with Communication Function ) Page Document GMX-CO_SAFE

-BT_WIFI No. Enacted/Revi sed No. 0 4 6. How to Use the Product How to turn on and off the product Product Operation Situation Sensor Operation Situation

>Press the power button on the front of the product for a long time until the product turns on.

>When the product is turned on, the state and operation indicator lamp lights up in white along with the melody.

>After the sensor stabilization time for 30 seconds, the sensor starts to detect. During this time, the white LED lamp lights up and the button operation is deactivated.

>If you press the power button for more than three seconds during the operation, the operation is turned off along with the off melody.

>After 30 seconds of the operation, the product starts to detect gas and measure temperature. At this time, the status and operation indicator lamp in the middle lights up in green every 4 and 5 seconds.

>When the status indicator lamp light up in yellow, it displays that the concentration of carbon monoxide is cautious. Therefore, you need to adequately ventilate the room.

>When the status indicator lamp light up in red, it displays that the concentration of carbon monoxide is high. Therefore, you must adequately ventilate the room.

>When both the status indicator lamp and the warning indicator lamp light up in red, they indicate that the concentration of carbon monoxide is a very dangerous condition. Therefore, you must immediately ventilate the room or leave the area.

*At this time, a warning buzzer sounds.

*However, the buzzer operates 3 minutes after the operation. Product Manual Geoziel Indoor Carbon Monoxide Detector Revision Date May 14, 2021

(Version with Communication Function ) Page Document GMX-CO_SAFE

-BT_WIFI No. Enacted/Revi sed No. 0 5 GEOMEXSOFT Ltd. Power Situation

>When the status indicator lamp flashes blue periodically, it displays that the product needs to be charged due to low battery power.

>When a power adaptor of 5V, 1A or higher is connected to the USB-C connector, the charging indicator lamp lights up in red. This red light turns off when the battery is fully charged. GEOMEXSOFT Ltd. Product Manual Geoziel Indoor Carbon Monoxide Detector Revision Date May 14, 2021

(Version with Communication Function ) Page Document GMX-CO_SAFE

-BT_WIFI No. Enacted/Revi sed No. 0 6 7. How to Use the Dedicated Application through Bluetooth Basic bluetooth connection of the product 1) After running the dedicated application installed on the smartphone, click the product connection menu. 2) When you execute the function Find Device, the application searches for your device. When you select the device, the device is connected to the application through Bluetooth. 3) When the device is normally connected to the application, the application displays the temperature and carbon monoxide measurements in the application menu. Product Manual Geoziel Indoor Carbon Monoxide Detector Revision Date May 14, 2021

(Version with Communication Function ) Page Document GMX-CO_SAFE

-BT_WIFI No. Enacted/Revi sed No. 0 7 GEOMEXSOFT Ltd. Alarm 1) When a carbon monoxide level of 250ppm or high is detected for more than 30 seconds, the application will show an alarm message. 2) When you click the alarm message, the alarm stops for 30 seconds. 8. Reboot and Automatic Recovery for Device Malfunction

>If the product is abnormally turned off due to sudden situations such as sudden static electricity application from the outside, the self-recovery function operates to automatically reboot the product and return it to the previous operation.

>In this case, since the product maintains the previous setting value and automatically reconnects the smartphone without user intervention, the user can continuously use the product without other operations. FCC Information to User 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 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 Consult the dealer or an experienced radio/TV technician for help. con-nected. Caution Modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. FCC Compliance Information : 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. CAUTION : Exposure to Radio Frequency Radiation. Antenna shall be mounted in such a manner to minimize the potential for human contact during normal operation. The antenna should not be contacted during operation to avoid the possibility of exceeding the FCC radio frequency exposure limit. IMPORTANT NOTE:

FCC RF Radiation Exposure Statement:

This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

FCC ID: 2AZ4UGMX-GAS-SAFE Contain FCC ID: 2AC7Z-ESP32WROOM32E 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 operations. Made in Korea

Letter of Authorization Company

: GEOMEXSOFT Co., Ltd. Address

: #305, 306, 307, GIMC, 882 BAKSA-RO SEO-MYEON, CHUNCHEON-SI, GANGWON-DO KOREA Product Name

: GEOZIEL-AIR Model Number

: GMX-GAS_SAFE-BT_WIFI FCC Identifier

: 2AZ4UGMX-GAS-SAFE We authorize MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the above named equipment. Any individual within MiCOM Labs is authorized to act on our behalf and take action on the application. We declare that MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, is allowed to forward all information related to the approval project to the Federal Communication Commission 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. Name: Bomuk, Kim Date: June 21, 2021 Title: Research Enginner Signature of applicant:

GEOMEXSOFT Co., Ltd. Date: June 21, 2021 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure indefinitely. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Subject; Request for Confidentiality FCC ID: 2AZ4UGMX-GAS-SAFE Schematic Diagram Block Diagram Operational Description Part List Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In additional to above mentioned documents, pursuant to Public Notice DA 04-1705 of the Commission' s policy, in order to comply with the marketing regulations in 47 CFT 2.803 and the importation rules in 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices. We are requesting the commission to grant shot-term confidentiality request on the following attachment(s) for 180 days after the grant as outlined in Public Notice DA 04-1705. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. External Photos Internal Photos Test Setup Photos User Manual Sincerely, Name: Bomuk, Kim Title: Research Enginner