ASSA ABLOY SL521 Telescopic Operator

You want a modular approach for maximum flexibility. And you want a telescopic design that manages wide openings with ease. That’s where the SL521 comes in. Inspired by the super dependable SL500, this telescopic update is particularly useful when you’re facing major traffic flows in big spaces. If size matters – alongside flexibility and reliability – then this door operator is up to the task.

Driven by data

Get deeper understanding and actionable insights into every aspect of your door’s performance. We put all the relevant info at your fingertips, so you know how the operator is working – and how it could work even better.

Care for the climate – inside and out

It’s never been more important to cut down energy usage. Not only does better sustainability protect the environment, it also reduces maintenance costs too. So this automatic door does its bit. For starters, it’s default position is closed, minimizing cold/heat transfer. That transfer can be reduced even further by adapting opening times. ASSA ABLOY Insights can analyze the indoor climate to optimize the working environment. And we always make sure this door operator meets the latest environment standards, for added ng, reliable, and operate smoothly.