About This Manual

GXA-27 / GXM-27 / GXL-27
Bluetooth® Interface
INSTRUCTION MANUAL

1WMPD4005335© 2024 A&D Company, Limited

1. Introduction

GXA-27 / GXM-27 / GXL-27 is a Bluetoothcommunication option. By pairing specific product, PC,
tablet or smartphone equipped with Bluetooth function,
you can communicate with the balance. Dust andwaterproof balances can communicate with Bluetooth
device by using GXA-27 / GXM-27 / GXL-27
maintaining its performance.

The Bluetooth® word mark and logos are registeredtrademarks owned by Bluetooth SIG, Inc. and anyuse of such marks by A&D is under license.
iOS is the name of the operating system of Apple Inc.
iOS is a trademark or registered trademark of Cisco
in the U.S. and other countries and is used underlicense.
AndroidTM, Google Play and the Google Play logo aretrademarks of Google LLC.
Microsoft®, Windows®, Word®, and Excel® aretrademarks of the Microsoft group of companies.

GXA-27

GXM-27

2. Support models
GXA-27
GXM-27
GXL-27

GX-A / GF-A /GX-AWP / HR-AZ / HR-A / FZ / FX / FZ-WP / FX-WP / FZ-i / FX-i /FZ-iWP / FX-iWP
GX-M / GF-M
GX-L / GF-L

3. Connectable device(1) Smartphone / Tablet / PC with Bluetooth via HID: Refer to “6. HID function (HID Over GATT Profile)”.
(2) Smartphone / Tablet via App: Install A&D WeiV® (iOS / Android OS)(3) AD8931: Wireless Remote Display(4) AD8541-PC: Wireless Communication Interface for Windows PC(Connect to USB port of computer)
Note: Refer to the A&D website for details.

4. Installation Procedure
Note: Before installing the option board, disconnect the AC adapter from the balance.
GXA-27
Step1 Remove the two screw from the panel. Pull gently the cable and option board from the balance.
Step2 Peel off the connector that is affixed to the panel with double-sided tape and insert it into the socket of the option
board.
Step3 Attach the option board to the balance. Fix the option panel with two screws removed in step1.
GXM-27 / GXL-27
Step1 Remove the two screw from the panel and pull out RS-232C / USB board from the balance.
Step2 Disconnect two cables gently from the RS-232C / USB board.
Step3 Connect the two cables into the sockets of the GXM-27 / GXL-27 board.
Step4 Insert the rubber packing and plug the GXM-27 / GXL-27 into the balance.
Fix the option panel with two screws removed in step1.

GXL-27

5. DIP switch

8. Wireless communication

 GXA-27 / GXM-27 / GXL-27 has two dip switches. DIP switch No.1 sets connection method with Bluetooth device anddip switch No.2 set giving or not giving a serial number (S/N) to the weighing value. Refer to the following table,adjusting the settings of the switch 1 and 2 depending on your application.
DIP switch
No.1
No.2
HID
S/NCaseON
Keyboard input
No S/N(Factory Setting)

1

HID

OFF

S/N

Output Data
Only numerical data
(No header, no +sign and no unit)
Example 1)
1.23
Example 2)
－4.56
Data

ON
Keyboard input
With S/N

2

HID

ON

S/N

Add S/N before numerical data
(Same as case 1 if the balance has no S/N setting)
Example 1)
12345678
1.23
Example 2)901234567
－4.56
S/N

OFF
Two-way
communication *3

HID

Tab

Data

Connect to AD8931 or AD8541-PC
or A&D WeiV* See the AD8931 or AD8541-PC or A&D WeiV manual how to set the communication functions.

6. HID function (HID Over GATT Profile)
6.1. About HID function

 By turning on DIP switch No.1, you can connect to a Smartphone, tablet, or PC with Bluetooth and use a general
purpose text application or spreadsheet software.
 The output data has no header (ST, WT, etc.), + sign and unit (g, kg, etc.).
 Set the keyboard language of device to English.
 By turning on DIP switch No.2, the output data has serial number (S/N) of balance. Refer to 3- DIP switch, Case 2.

6.2.

9. Compliance9.1. Compliance with FCC Rules

This device contains transmitter module FCC ID: 2A6NFEC2832
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, includinginterference that may cause undesired operation. (FCC = Federal Communications Commission in the U.S.A.)FCC CAUTION: Changes or modifications not expressly approved by the party responsible for compliance could void theuser’s authority to operate the equipment. The antenna used for this transmitter must not be co-located or operating in
conjunction with any other antenna or transmitter. This product is certified as type of the portable device with FCC Rules.
To maintain compliance with RF Exposure requirement, please use within specification of this product.

9.2.

OFFS/N Bluetooth devices is EC2832 (KAGA ELECTRONICS Co.,Ltd.)／Bluetooth 5.0 (Bluetooth Low Energy)
 The effective range communication is 10 m or less in an unobstructed space.
If there is an obstacle such as a wall, the range of communication will be shorter.
 Interference may be caused near the following devices that use the 2.4 GHz frequency band, which is the same as forBluetooth. Therefore, this device is not suited for uses that require reliability.
− Wireless LAN− Bluetooth devices (such as mobile phones)− Home appliances such as microwave ovens

Pairing Turn on the Bluetooth function of connection device and power on the balance. Select the “A&D_HID” device and pair.
S/N may have been added after “A&D_HID”.
 You will not be able to connect if more than 30 seconds have passed without pairing after selecting the device.
In that case, power off the balance and try again.

7. Precautions for use Refer to the instruction manual of the connection device for the pairing.
 The LED lights up when the wireless communication connection is completed.
 It will connect automatically when the paired device is nearby. When connecting to other device, turn off the unused
devices or unpairing GXA-27 / GXM-27 / GXL-27 and Bluetooth device.
 If you can’t communicate with the balance, check the connection of the balance and the GXA-27 / GXM-27 / GXL-27,
settings of the balance, pairing and connected device status.

ICIC RADIATION EXPOSURE STATEMENT FOR CANADAThis device contains transmitter module IC : 28568-EC2832
This device complies with Innovation, Science and Economic Development Canada license-exempt RSS standards.
Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must
accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR Innovation, Sciences et Développement économique Canada applicables
auxappareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes : 1) l’appareil ne doitpas produire de brouillage; 2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si lebrouillage est susceptible d’en compromettre le fonctionnement.