  In this work we present the design of the ATLAS unit (Asteroid
Terrestrial-impact Last Alert System) that will be installed at Teide
Observatory in Tenerife island (Spain). ATLAS-Teide will be built by the
Instituto de Astrofisica de Canarias (IAC) and will be operated as part of the
ATLAS network in the framework of an operation and science exploitation
agreement between the IAC and the ATLAS team at University of Hawaii.
  ATLAS-Teide will be the first ATLAS unit based on commercial on the shelf
(COTS) components. Its design is modular, each module (building block) consist
of four Celestron RASA 11 telescopes that point to the same sky field, equipped
with QHY600PRO CMOS cameras on an equatorial Direct Drive mount. Each module is
equivalent to a 56cm effective diameter telescope and provides a 7.3 deg^2
field of view and a 1.26 arcsec/pix plate scale. ATLAS-Teide will consist of
four ATLAS modules in a roll-off roof building. This configuration allows to
cover the same sky area of the actual ATLAS telescopes.
  The first ATLAS module was installed in November 2022 in an existing
clamshell at the TO. This module (ATLAS-P) is being used as a prototype to test
the system capabilities, develop the needed software (control, image
processing, etc.) and complete the fully integration of ATLAS-Teide in the
ATLAS network. The preliminary results of the tests are presented here, and the
benefits of the new ATLAS design are discussed.
