FCC ID: CN289695 LRM2-900 MHZ Module

Product Development CATTRON North America Inc. LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B

. 2022 Cattron North America Inc. LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B CATTRON North America Inc. Revision History Date Revision Description Signature / Date 2019-02-13 A Initial draft Prepared Bo Gao 2022-05-15 B 900MHz release Verified Approved Prepared H. Lin Verified Approved Prepared Verified Approved Prepared Verified Approved Cattron North America Inc. Page ii LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B CATTRON North America Inc. Table of Contents 1. Introduction ........................................................................................................................................................1-1 1.1 1.2 1.3 1.4 1.5 Purpose ...........................................................................................................................................................1-1 Scope ..............................................................................................................................................................1-1 Applicability ...................................................................................................................................................1-1 Definitions, Acronyms ....................................................................................................................................1-1 References ......................................................................................................................................................1-1 2. Features Summary ..............................................................................................................................................2-1 3. Host Interface Definition ....................................................................................................................................3-2 3.1 3.2 Pins Assignment .............................................................................................................................................3-2 Signals Description .........................................................................................................................................3-3 4. Functional Description........................................................................................................................................4-4 4.1 4.2 4.3 4.4 Concepts Overview .........................................................................................................................................4-4 System States ..................................................................................................................................................4-5 Telegram Transmission ..................................................................................................................................4-5 Telegram Reception ........................................................................................................................................4-5 5. LRM2 Configuration Concept ............................................................................................................................5-7 5.1 5.2 Console Interface ............................................................................................................................................5-7 Stand-Alone Test Mode ..................................................................................................................................5-8 Cattron North America Inc. Page iii LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B CATTRON North America Inc. 89695TRX module meets Part 15 of the FCC rules and regulations. Compliance with the labeling requirements, FCC notices is required. In order to comply with FCC Certification requirements, the Original Equipment Manufacturer (OEM) must fulfill the following requirements. 1. The system integrator must place an exterior label on the outside of the final product housing the 89695TRX Module. The figure below shows the contents that must be included in this label. 2. 89695TRX modules may only be used with the antennas that have been tested and approved for use with the module. Labeling Requirements The OEM must make sure that FCC labeling requirements are met. This includes a clearly visible exterior label on the outside of the final product housing that displays the contents shown in below. WARNING: The 89695TRX modules have been tested by the FCC for use with other products without further certification (as per FCC Section 2.1091). Changes or modifications to this device not expressly approved by Cattron North America Inc. could void the users authority to operate the equipment. NOTICE: The 89695TRX modules have been certified for mobile and fixed radio applications. If the module will be used for portable applications, the device must undergo SAR testing. RF Exposure WARNING: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 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. NOTICE: The preceding statement must be included as a CAUTION statement in OEM product manuals in order to alert users of FCC RF Exposure compliance. 89695TRX is designed for use in countless wireless applications requiring long range communications with low energy consumption. To ensure that the final product complies with all of the regulatory requirements for the Modular Grant the following integration instructions should be followed. 89695TRX is limited to OEM installation ONLY. The OEM integrator is responsible for ensuring that the end-user has no manual instructions to remove or install the module. Cattron North America Inc. Page iv LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B CATTRON North America Inc. FCC Part 15. 19 Warning Statement 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. FCC Part 15.21 Warning Statement NOTE: THE GRANTEE IS NOT RESPONSIBLE FOR ANY CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY THE PARTY RESPONSIBLE FOR COMPLIANCE. SUCH MODIFICATIONS COULD VOID THE USERS AUTHORITY TO OPERATE THE EQUIPMENT. FCC Part 15.105(b) Warning Statement 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 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. IC RSS-GEN, Sec 8.4 Warning Statement- (Required for license-exempt devices) ENGLISH:

This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. FRENCH:

Le prsent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. IC RSS-GEN, Sec 8.3 Warning Statement-

(Required for Transmitters w/ detachable antennas) ENGLISH:

This radio transmitter (identify the device by certification number, or model number if Category II) has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. FRENCH:

Le prsent metteur radio (identifier le dispositif par son numro de certification ou son numro de modle s'il fait partie du matriel de catgorie I) a t Cattron North America Inc. Page v LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B CATTRON North America Inc. approuv par Industrie Canada pour fonctionner avec les types d'antenne numrs ci-dessous et ayant un gain admissible maximal et l'impdance requise pour chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est suprieur au gain maximal indiqu, sont strictement interdits pour l'exploitation de l'metteur. IC RSS-102, Sec 2.6 Warning Statements ENGLISH:

The applicant is responsible for providing proper instructions to the user of the radio device, and any usage restrictions, including limits of exposure durations. The user manual shall provide installation and operation instructions, as well as any special usage conditions, to ensure compliance with SAR and/or RF field strength limits. For instance, compliance distance shall be clearly stated in the user manual. FRENCH:

The user manual of devices intended for controlled use shall also include information relating to the operating characteristics of the device; the operating instructions to ensure compliance with SAR and/or RF field strength limits;

information on the installation and operation of accessories to ensure compliance with SAR and/or RF field strength limits; and contact information where the user can obtain Canadian information on RF exposure and compliance. Other related information may also be included. Only the following authorized antennas may be used with the equipment:

Only the antenna gain less than 2.00 dBi may be used with the equipment. 900MHz Splatch patch antenna (-10 dBi) 900MHz wave whip antenna (0 dBi), 900MHz wave whip Antenna (2 dBi);

900MHz mag mount Antenna (2 dBi) Cattron North America Inc. Page vi LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B Introduction 1. Introduction 1.1 Purpose A new family of RF module, the LRM2 family, is being developed by Cattron North America Inc. This family is employing Silicon Labs EFR32FG13 Flex Gecko SoC(System On Chip),which is including a high performance Radio transceiver and a high performance Micro-Controller Unit. 1.2 Scope This document describes the host interface signal definitions, timings, operation mode, available functionalities, and provide details about its integration to Unity products. This document does not cover RF specifications or power supply specifications. 1.3 Applicability Applies to LRM2 family members, P/N 2PCA-8969-xxxx 1.4 Definitions, Acronyms 1.4.1 Definitions 1.4.2 Acronyms LRM MCU SoC OCU 1.5 References Radio Module Machine Control Unit System-On-Chip Operator Control Unit

[1] Schematic Drawing for LRM2, Cattron P/N 9D02-8969-A001

[2] Unity RF Telegrams Format, Cattron P/N 9S01-7640-A101

[3] LRM2 Radio Module Configuration Registers Specifications, Cattron P/N 9S02-8969-A002 Cattron North America Inc. Page 1-1 LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B Features Summary 2. Features Summary The LRM2 is designed to replace LRM(2PCA-7954-xxxx) with less cost and improved performance. Its host interface is compatible with previous LRM(2PCA-7954-xxxx) series. Direct electrical compatibility to LRM(2PCA-7954-xxxx) interface On-board wireless SoC The interface is controlled by an on-board Silicon Labs EFR32FG13 SoC. The EFR32FG13 Flex Gecko SoC includes both a high-performance radio transceiver and a high performance, low power Micro-Controller. Minimum buffers/Minimum Delay LRM2 firmware is implemented to provide a almost transparent operation; transmission and reception delays are kept to a minimum Support for different Modulation modes The LRM2 family is designed to support multiple different RF Modulations (2FSK and 4FSK), which is transparent to Host firmware. These different aspects are covered in the rest of this document. Cattron North America Inc. Page 2-1 LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B Host Interface Definition 3. Host Interface Definition 3.1 Pins Assignment Description IO Signal Signal IO Description GND RX_BB Ground O RX Baseband signal Pin Number 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 Data transfer Handshaking Signal 3.3V DC supply Receive data RX Enable Serial port Configuration mode Reset CPU flash mode Ground Voltage Supply, RF power amplifier O I O I I I I I

!READY 3V3 RXD

!RX_EN

!CONFIG

!RESET

!PGM GND-PA VPA 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 TXD

!TX_EN GND I I Transmit Data Tx Enable Ground DCLK O Data Clock GND-PA VPA I Ground Voltage Supply, RF power amplifier Table 3.1 Host Interface pins assignment Cattron North America Inc. Page 3-2 LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B 3.2 Signals Description Pin Nb Signal Name I/O Description Host Interface Definition Category Power supply Power supply Power supply Power supply Module control 1, 2 VPA Input Voltage Supply, RF power amplifier. This supply is needed when an optional piggy-back power amplifier board is used. Specifications (voltage, current) depend on piggy-back board used. 3, 4 GND-PA GND, RF power amplifier. This ground is connected internally to the module ground. It does not need to be connected when the module is used without PA 22, 50 GND System ground 27 3V3 Input 3.3 V power supply voltage input (Vcc) 5 7

!PGM Input Used to download on-board CPU firmware. Connect this signal to GND at power-up to force the CPU to enter firmware programming mode. Otherwise, connect to Vcc or leave unconnected

!RESET Input Main reset (active low). When reset is asserted, the content of the internal registers is lost. Module control 29

!READY Output Handshaking signal for transmit or receive data on the host interface. 23

!RX_EN Input Receive Enable (active low). Used to place the RF module in received mode

*Note: when !TX_EN and !RX_EN are asserted simultaneously, the module is placed in STANDBY mode (low power consumption, internal registers conservation) 24

!TX_EN Input Transmit Enable (active low). Used to activate telegram transmit process 25 RXD Output Receive Data. 26 TXD Input Transmit Data 20 DCLK Output Data Clock. Active when serial port is configured in Synchronous Mode 21

!CONFIG Input Used to configure the Data transmission signals RXD and TXD for module configuration. Asserting can be done in IDLE state only. Active low 48 RX_BB Output Analog demodulated RX signal Table 3.2 - Host Interface signals description Data Transmission Data Transmission Data Transmission Data Transmission Data Transmission Data Transmission Configuration interface Data Transmission Cattron North America Inc. Page 3-3 LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B Functional Description 4. Functional Description 4.1 Concepts Overview 4.1.1 Block Diagram The figure below shows a high-level block diagram of the LRM2. Figure 4.1 LRM2 high-level block diagram The Silicon Labs ERF32FG13 SoC is located between the host interface and the RF interface, providing decoupling between host and RF interface. The EFR32FG13 SoC has sufficient buffer space for one telegram. As shown later, telegram processing is defined to minimize delays, so to provide a transparent-like behavior. 4.1.2 Data Communication Model & Definitions The communication model defines some of the terminology used in the rest of this document. Figure 4.2 - Data communication model

The LRM2 Radio Module is used to communicate telegrams between hosts. In Unity context, hosts are OCU and MCU CPU boards. The LRM2 has two interfaces: a Host Interface and a RF Interface. Cattron North America Inc. Page 4-4 Silicon Labs EFR32 FG13 SoCPA Board(Optional)CtlRF InterfaceHost InterfaceHostLRM Radio ModuleHost Data BufferTx/RxTransmit Telegram FramesReceive Telegram FramesRF packetsLRM Host InterfaceLRM RF Interface LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B Functional Description

Transmit and Received Telegrams are relayed through the LRM2 Host Data Buffer. This buffer is capable to hold only one telegram at a time. The purpose of this buffer is to relax host timings requirements, and to allow decoupling between Host Interface and RF Interface data rates. Telegrams sent/received on the Host Interface and RF interface are encapsulated into frames to improve synchronization. The LRM2 does not perform any processing on the telegrams content; it controls only the frames overhead. 4.2 System States The LRM2 supports five operational states State Control Signals Functions permitted Remarks

!RESET !TX_EN !RX_EN !CONFIG Transmit Telegram Receive Telegram Write Config Registers Read Registers RESET IDLE CONFIG TX RX 0 1 1 1 1 X 1 1 0 1 X 1 1 1 0 X 1 0 1 1 Config registers are reset Transceiver is disabled Config register values are retained All possible transitions are allowed. The internal configuration registers can be written in CONFIG state only. Attempt to write registers in any other state result in no action / no response. Table 4.1 LRM2 States Definition 4.3 Telegram Transmission Transmit frames have two fields:

Telegram length (number of bytes). The length is used by the CPU to control the transmission process. Telegram (maximum 254 bytes). The content of the telegram is defined by the application. For Unity application, this is the Unity Telegram beginning with the Scrambling byte, the TID and terminated with the 16bits CRC, as defined in ref [2]. Figure 4.3 - Transmit Telegram frame format 4.4 Telegram Reception Each RF packet received by the LRM2 is sent to the host interface, followed by its RSSI. Also, in order to ensure receive telegram frame synchronization (i.e. unambiguous detection of the start of the frame), the frame is encapsulated according to SLIP framing. SLIP framing is very simple to decode. It is described in section Error!

Reference source not found.. Receive frame fields are:

SOF (Start-of-Frame character). This is part of SLIP encapsulation. Cattron North America Inc. Page 4-5 Length1 byteTelegramLength bytes LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B Functional Description

Length of the Telegram field (number of bytes), not counting RSSI fields and any additional control characters introduced for SLIP encapsulation. Telegram (maximum 254 bytes). The content of the telegram is defined by the application. RSSI: Received signal strength for this frame. RSSI is an 8 bits integer value, expressed in dBm. Range;-128 to

+127 dBm. Figure 4.4 - Receive Telegram frame format Cattron North America Inc. Page 4-6 Length1 byteTelegramLength bytesRSSISOF1 byte1 byte LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B LRM2 Configuration Concept 5. LRM2 Configuration Concept All LRM2 configuration and status parameters are accessible through addressable registers.

- All parameters can be read and written only in CONFIG mode. The definition of the configuration registers is given in reference [3]. This section addresses the basic description of all these three methods. 5.1 Console Interface The serial interface configuration port is enabled by asserting !CONFIG signal; the serial interface is automatically reconfigured in asynchronous mode, running at 38400bps, 8N1. All ASCII strings received are interpreted as configuration commands. This mode is particularly useful for stand-alone testing, when the unit can be controlled from a PC or by an operator/tester using a terminal emulation program. 5.1.1 Write command wrCmd register value , where:

wrCmd = write command. w or wr can be used and are equivalent register = register identification. Can use the register name or register address value = value to be written, in decimal or hexadecimal format. Hexadecimal values are preceded by 0x Examples:

wr txf 915000000

:Write 915000000 to register txf (Tx frequency) wr 0x80 18

:Write 18 to register address 0x80 wr txf 915000000 0x80 18 :Concatenate the two writes above in a single instruction Here is the command to set the transmit output power level in range 0dBm to 20dBm wr txp 20 wr txp 10 wr txp 0

:the radio transmit power is 20+/-1.0dBm (maximum)

: the radio transmit power is 10+/-1.0dBm (mid power level)

: the radio transmit power is 0+/-1.0dBm (minimum) 5.1.2 Read command rdCmd reg where:

rdCmd= read command. r or rd can be used and are equivalent reg

= register identification. Can use the register name or register address Examples:

rd txf rd 0x80

: Reads register txf (Tx frequency)

: Reads register address 0x80 rd txf 0x80

: Reads registers txf and 0x80 in a single instruction Cattron North America Inc. Page 5-7 LRM2 Radio Module Document p/n: 9S02-8969-A001 Rev. B 5.1.3 Help command helpCmd where:

helpCmd= help command. h, help or ? can be used and are equivalent. The LRM2 responds with the list off all available configuration registers. 5.2 Stand-Alone Test Mode LRM2 Configuration Concept The LRM2 can be operated in stand-alone mode for production/service tests. In this case, only a 3.3VDC supply is needed, and a RS232/TTL transceiver (like Cattron FLASHBOX) to connect to a PC serial port. Figure 5.1 - LRM2 connection for stand-alone operation The LRM2 will support several built-in test modes to ease testing from a PC. For example a. Transmission Tests

- Generation of different type of carrier: unmodulated (CW), or modulated with 101010.. or pseudo-random sequence

- Automatic generation of test RF frames with predefined content b. Reception Tests

- Measure PER (packet error rate) when receiving the predefined test RF frames

- Measure RF input level Cattron North America Inc. Page 5-8 21LRM, host interface26RXDTXD25!CONFIG3V3GND2722RS232 - TTL transceiver(ex: Cattron FLASHBOX)3.3VDCRS232PC, running automated testprogram, or ANSI terminalemulation software*Note: The LRM !RX_EN, !TX_EN and !RESET all have internal pull-ups, so they can be left unconnected.

1 2 3 4 5 6 D C B A Mf d by Catt ron North America, Inc. Warren, OH 44483-2254 USA This unit contains radio module:

FCC ID:

IC:

M/N:

Freq:

CN289695 1007A-89695 89695TRX 902-928 MHz 3LBL-7707-A214 LRM2 902-928MHz For FCC/IC Use Only 1 2 DRAWING NUMBER:

9D08-7707-A214 DESCRIPTION:

REV. LABEL, APPROVAL, M, L, LRM2 902-928MHZ A 5 4 SHEET 3 OF 3 6 3 r e h t o y n a o t d e s o l c s d i r o y b d e s u e b o t t i f o n o i t r o p y n a r o t i s i r o n

, d e c u d o r p e r e b o t t o n s i t I

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, e v s u i l c x e e h t e r a n i h t i i w d e n a t n o c n o i t a m r o f n i l l a d n a t n e m u c o d s i h T D C B A y t i l a i t n e d i f n o c l l a d n a y n a h t i w e c n a d r o c c a n i l d e d n a h e b o t o s a l s i e c n e d n o p s e r r o c s i h t n h i t i w d e n i t a n o c n o i t a m r o f n i e h t

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FCCID:CN289695 IC:1007A-89695 Model: 89695 TRX Photos 902-928MHz TOP and BOTTOM View with shielding Label location for module For Host Product

KS CATTRON Cattron North America Inc. 655 N River Road NW STE A June 28", 2022 Warren OH 44483-2254 USA Tel: (826) 674 9780 Fax:(234) 806 0019 foo. www.cattron.com Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: CN289695, Model Number:

2MOD-8969-X5xx. Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, we hereby request confidential treatment of information accompanying this application as outlined below:

Exhibit Type File Name Block Diagram LRM2-CN289695-BlkDia.pdf Schematics LRM2-CN289695-Schem.pdf Operation Description LRM2-CN289695-OpDes.pdf Parts List LRM2-CN289695-PartsLst.pdf The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.907 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commissions public notice, we also request temporary confidential treatment of information accompanying this application for 180 days as outlined below:

Exhibit Type File Name Test Set up photos Test Setup Photos.pdf Manual LRM2-CN289695-Manual.pdf Sincerely, David Stagg Program Manager Cattron North America Inc. Cattron North America Inc. Conf-letter-long-short-term-CN289695.doc

August 31st, 2022 Reference:

Applicant:

Equipment:

Model #:

FCC ID:

IC:

Cattron North America Inc. 902-928MHz Low Power Transceiver Device 89695TRX CN289695 1007A-89695 Cattron North America Inc. 655 N River Road NW STE A Warren OH 44483-2254 USA Tel: (826) 674 9780 Fax:(234) 806 0019 www.cattron.com With regard to the Part 15 requirements for limited single modular approval, Cattron North America Inc. would make the following observations with regard to the numbered requirements for the RF module: 89695TRX

(FCC ID: CN289695, IC ID:1007A-89695):

I. The radio elements must have the radio frequency circuitry shielded. Complies, the module has top and bottom shielding covers. II. The module must have buffered modulation/data inputs.-

The equipment into which this module is installed is exclusively designed and manufactured by and for Laird Controls North America Inc., the equipment is of our own design and the data is carefully controlled to maintain FCC compliance. III. The module must contain power supply regulation on the module.-

The equipment into which this module is installed is exclusively designed and manufactured by and for Laird Controls North America Inc. and all have their own regulated and monitored 3.3V supply voltage, excursions of more than +/-10% result in equipment shut down. IV. The module must contain a permanently-attached antenna, or contain a unique antenna connector, and be marketed or operated only with specific antenna(s)-

The antenna requirements are met by having third party tested the integral and variants of external antennas as part of the FCC submission. V. The module must demonstrate compliance in a stand-alone configuration.-

The modular transmitter has been tested in the defined stand-alone configuration. VI. The module must be labeled with its permanently fixed FCC ID label, or use an electronic display.-

The Labeling requirements of the modular approvals will be followed, as previously stated the module is only incorporated into Laird Controls North America Inc. equipment, the label will be installed on the outside of the equipment into which it is incorporated. VII. Operating parameters are controlled within system requirements specifications, these define the specific voltage tolerance, data rate, deviation and Duty Cycle. Further with regard to Duty Cycle, this is limited to no more than 10%

VIII. RF exposure limits are maintained by, a) Limiting power to 10mW and Duty Cycle to 10%

b) Posting warnings in the operations manual to warn of the possible harmful effects of human exposure to radiation. Cattron North America Inc. FCC-ISED-Declare-letter-LRM2-900MHz.doc

KS CATTRON Cattron North America Inc. 655 N River Road NW STE A Warren OH 44483-2254 USA June 28", 2022 Tel: (826) 674 9780 Fax: (234) 806-0019 Federal Communications Commission www.cattron.com Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: FCC Application for FCC ID: CN289695 and IC: 1007A-89695 To Whom It May Concern:

We, the undersigned, hereby authorize Mrs. Sharon Hoffman at Timco Engineering Inc. on our behalf, to apply to the Federal Communications Commission on our equipment (FCC ID: CN289695, IC:

1007A-8969). Any and all acts carried out by Mrs. Sharon Hoffman on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, ANE David Stagg Program Manager Cattron North America Inc. Cattron North America Inc. Page | of | FCC-Power-Attorney202206-CN289695.doc