AI G125
English
Information about the documentation
About this documentation
- Read this documentation before initial operation or use. This is a prerequisite for safe, trouble-free handling and use of the product.
- Observe the safety instructions and warnings in this documentation and on the product.
- Always keep the operating instructions with the product and make sure that the operating instructions are with the product when it is given to other persons.
Explanation of symbols used
Warnings
Warnings alert persons to hazards that occur when handling or using the product. The following signal words are used:Symbols in the operating instructions
The following symbols are used in these operating instructions:![]() |
Comply with the operating instructions |
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Instructions for use and other useful information |
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Dealing with recyclable materials |
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Do not dispose of electric equipment and batteries as household waste |
Symbols in illustrations
The following symbols are used in illustrations:![]() |
These numbers refer to the illustrations at the beginning of these operating instructions. |
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The numbering reflects the sequence of operations shown in the illustrations and may deviate from the steps described in the text. |
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Item reference numbers are used in the overview illustration and refer to the numbers used in the key in the product overview section. |
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These characters are intended to specifically draw your attention to certain points when handling the product. |
Product-dependent symbols
Symbols on the product
The following symbols can be used on the product:![]() |
Direct current (DC) |
Product information

The type designation and serial number are printed on the rating plate.
- Write down the serial number in the table below. You will be required to state the product details when contacting Hilti Service or your local Hilti organization to inquire about the product.
Product informationGateway AI G125 Generation 01 Serial no.
Declaration of conformity

The technical documentation is filed here:
Hilti Entwicklungsgesellschaft mbH | Tool Certification | Hiltistrasse 6 | 86916 Kaufering, Germany
Safety
General safety instructions
Read all safety instructions and other instructions.Keep all safety instructions and other instructions for future reference.
- Stay alert, watch what you are doing and use common sense when working with this device, do not use this device while you are tired or under the influence of drugs, alcohol or medication.
- Maintain tools and accessories carefully. Check that moving parts operate satisfactorily and do not jam, and make sure that no parts are broken or damaged in such a way that the tool might no longer function correctly. Have damaged parts repaired before using the tool. Many accidents are caused by poorly maintained tools.
- Do not expose the appliance to rain or wet conditions. Water entering an electric appliance will increase the risk of electric shock.
- Have the appliance serviced by a qualified repair person using only genuine Hilti spare parts. The safety of the appliance can thus be maintained.
- Do not cover a type identification plate or other labels.
- Do not cover any openings in the casing of the item of equipment.
- Do not obstruct switches, displays and warning lights.
- To avoid surface damage or chemical reactions, check that the adhesive is compatible with the surface before affixing the ON!Track gateway AI G125.
- Keep away from children.
Product-specific safety instructions
- Check the contents of the packaging. Make sure that nothing is damaged and that the contents are complete. If you notice defects or shortcomings that could impair the operability of the device, have them rectified by qualified personnel.
- Make sure that the device is correctly installed and secured.
Additional safety instructions
- The device is designed for indoor use only.
- Although the device complies with the strict requirements of the valid directives, Hilti cannot entirely rule out the possibility of the device causing interference due to powerful electromagnetic radiation. This can lead to incorrect operation. Check the accuracy of the device by taking measurements by other means when working under such conditions or if you are uncertain. Similarly, Hilti cannot exclude the possibility of interference with other devices (e.g. aircraft navigation devices).
Description
Intended use
The Hilti ON!Track gateway AI G125 makes it possible to clearly identify a construction asset by way of a radio signal. After being activated, the AI G125 continuously transmits a radio signal that enables the user of the Hilti ON!Track system solution to track the asset. A smartphone app and a Web application for the management of construction assets is available from Hilti .Items supplied
Gateway AI G125, two antennas, AC adapter, holder for gateway AI G125 (incl. screws and anchor), operating instructionsThird-party wordmarks, trademarks and logos
The Android™ and Chrome™ trademarks are the property of Google Inc.The iPhone® and iOS trademarks are the property of Apple Inc.
All other trademarks and wordmarks used, even when not expressly stated or marked as such, are the property of their applicable owners.
Prerequisites
The functionality of the AI G125 can be used only with the Hilti ON!Track app or a Web browser. In order to use this app, a user name and a password are required.For more information about Hilti ON!Track, contact Hilti Service or go to http://ontrack.hilti.com.
System failures can occur on account of updates of the AI G125 software.
The minimum requirements are as follows:
System requirements
System requirements
Smartphone / tablet |
Android™ 5 (or higher) iOS® 10 (or higher) ON!Track 3 Compatible with other wireless-enabled devices for data transfer |
Browser |
Internet Explorer or Chrome™ |
Technical data
Protection class |
IP20 |
Rated voltage |
5 V |
Rated current |
2.0 A |
Dimensions |
127 mm x 127 mm x 30 mm (5.0 in x 5.0 in x 1.2 in) |
Dimensions, antennas |
196 mm x 38 mm x 13 mm (7.7 in x 1.5 in x 0.5 in) |
Operating temperature |
0 ℃ …60 ℃ (32 ℉ …140 ℉) |
Storage temperature |
−20 ℃ …70 ℃ (−4 ℉ …158 ℉) |
Signal range (can vary greatly depending on surrounding conditions) |
30 m (98 ft - 10 in) |
Frequency |
2,402 GHz …2,480 GHz |
Maximum emitted transmission power |
12 dBm |
Frequency, WiFi (802.11a/b/g/n/ac) |
2412 GHz - 2472 GHz, 5180 GHz - 5700 GHz (depending on region) |
Maximum emitted transmission power, WiFi (802.11a/b/g/n/ac) |
19 dBm for the 2.4 GHz band; 18 dBm for the 5 GHz band |
UMTS/HSPA frequency |
800, 850, 900, 1700/2100 (AWS), 1800, 1900, 2100 MHz (bands I, II, IV, V, VIII, IX, XIX); depending on region |
LTE frequency |
700, 800, 850, 900, 1700/2100 (AWS), 1800, 1900, 2100, 2600 MHz (bands 1, 2, 3, 4, 5, 7, 8, 12, 18, 19, 20, 28); depending on region |
GSM/GPRS/EDGE frequency |
GSM 850, 900, 1800, 1900 MHz; depending on region |
Maximum emitted radiant power |
EGSM 850/900: class 4; GSM 1800/1900: class 1, corresponds to release 99; GSM 850/900/1800/1900 8-PSK: class E2, corresponds to release 99; UMTS 800/850/900/AWS/1800/1900/2100: class 3, corresponds to release 99; LTE 700/800/850/900/ AWS/1800/1900/2100/2600: class 3, corresponds to release 8 |
Operation
Installing gateway

- Using the wall plugs and screws provided, secure the bracket of the AI G125 to the wall/slab.
- Screw the antennas into the back of the AI G125.
- Secure the AI G125 to the bracket installed beforehand. Make sure that the device is secure.
- Connect the AI G125 to the electricity supply.
Transferring gateway to new location

- Disconnect the AI G125 from the electricity supply.
- Install the AI G125 at the new location. Do not connect the device to the electricity supply.
- Activate the ON!Track app and navigate to Transfer.
- Scan the QR code with your smartphone and enter the new data.
- Connect the AI G125 to the electricity supply.
- The AI G125 is ready for use.
- The AI G125 is ready for use.
Transport and storage
Transport- Deactivate the product for transport.
- Make sure that the equipment is held securely throughout all transport operations.
- After the device has been transported, always check all visible parts for damage.
- Always store this product with the electric supply cable unplugged from the electricity supply.
- Store this product in a dry place, where it cannot be accessed by children or unauthorized persons.
- After a long period of storage, always check all visible parts and controls for signs of damage and make sure that they all function correctly.
Further information
China RoHS (Restriction of Hazardous Substances)
Disposal

Manufacturer’s warranty
- Please contact your local Hilti representative if you have questions about the warranty conditions.
RF radiation exposure declaration
This device complies with the radiation limits defined for the uncontrolled exposure environment. This device should be installed and operated with a minimum distance of 35 cm between radiation source and any part of the body.FCC statement (applicable in US) / IC statement (applicable in Canada)
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 taking the following measures:- Re-orient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment to a power outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced TV/radio technician for assistance.
Operation is subject to the following two conditions:
- This device shall cause no harmful interference.
- This device must accept any interference received, including interference that may cause undesired operation.