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Technical Support: +36 1 533 31 20 (on weekdays 8:00-17:00 Budapest time) or support@tell.hu

API documentation

for developers

Integrating TELL devices via API

From now on you can easily and efficiently integrate your TELL devices into third-party software using our API connection.

Below you will find the supported devices, the functions currently available as a public API, and the downloadable API documentation.

Supported devices

The API connection is available for the following devices:

Pager7
Pager8
Smart Module BASE
Gate Control PRO 20
Gate Control PRO 1000
Gate Control PRO 20 DIN rail
Gate Control PRO 1000 DIN rail
Gate Control PRO 1000 Monitoring DIN rail

Available functions

Below we detail which functions are currently available as a public API:

Smart Module BASE, Pager7 and Pager8

  • Restarting the device
  • Querying the device status
  • Switching the relay on
  • Switching the relay off
  • Arming a partition
  • Disarming a partition

Gate Control PRO and Gate Control PRO DIN rail

  • Querying the device version from the server
  • Querying the device operating mode
  • Querying the maximum number of users
  • Sending a gate opening command
  • Registering an API user in the device
  • Registering and modifying a superadmin in the device
  • Querying, adding, editing and deleting group rules
  • Querying, adding, editing and deleting entry schemes
  • Querying, adding, editing and deleting users
  • Querying, adding, editing and deleting scheduled tasks
  • Querying, adding, editing and deleting holidays
  • Querying the device version from the device
  • Querying the event log

In addition to these functions, we plan to further expand the API's functionality in the future, so that we can serve our Customers' needs with even more efficient solutions.

Download the API document

Updated: 13 January 2026

Download

Pricing

Access to the API is provided under the following transparent fee structure. Ongoing operation, maintenance and security monitoring of the backend system are covered by the device-based monthly fee.

One-time fee

Administrative fee

EUR 50+VAT / API key

Covers the creation and registration of the API key, connecting the device to the system, and setting up the data flow.

Device-based monthly fee

The usage fee decreases on a tiered basis as the number of devices increases:

Number of devices Monthly fee / device
1 device EUR 5 / month / device
2–10 devices EUR 4 / month / device
11–50 devices EUR 3 / month / device
51 < Custom offer

Prices shown are net prices.

Requesting an API key

The purpose of TELL in issuing an API key is to enable the full or partial integration of TELL products with the system operated by the Applicant.

TELL considers each request for an API key on a case-by-case basis and makes its issuance subject to approval and an API License Agreement.

You can download the API Access Terms and Conditions by clicking here.

To request an API key, please fill in the form below. Our colleagues will then contact you and provide your personalised access.

API key request form

Are you requesting the API key for testing or production use?
Is the API integration related to a specific project?
Would you like to integrate the devices into your own system or a third-party system?
For which TELL device do you need the API key?
I agree to sign the API Access Terms and Conditions.
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