The N-DSEL can be used to program both EVOLUS slide and NEPTIS swing operators. It is easily identified by its white colour and black ⓜ symbol in the upper right corner.

This digital programmer is an essential requirement for the installer to configure the operator, perform its set-up, change its functions/parameters, carry out system diagnostics and access the event memory.

It can also be utilised by the end user to switch between operating modes (e.g. one-way, two-way, hold open), and is therefore password protected to stop unwanted persons from tampering with the chosen settings.