Firefly F-21 · Emergency descent device
There is still a way down.
A 30 kg child and a 125 kg adult descend at the same controlled rate. Nothing to set, nothing to adjust.
Friction pads on aviation aluminium. No motor, no battery, no electronics to fail.
Six years of engineering. Tested to EN 341:2011 Class A. Ships in two working days.
01 / 04
21:14 · Alarm active · 21st floor
Four ways out. All of them gone.
Choose your length
Most floors are about three metres. Scroll to see which length reaches yours.
0
m · of 6 m
reaches 2F
How it works
Braking
Friction pads against internal surfaces, the way a car slows.
Speed
One constant rate from 30 to 125 kg. No adjustment.
Descent
Smooth, stable, jerk-free. No free fall.
Power
None. No motor, no battery, no electronics.
The numbers
Four figures you can look up. No adjectives.
Where it goes
One device, mounted once. Anywhere people live or work above the second floor.
5/5
Standards met
Six years of engineering
Certified and tested
Trust
In their words
The night the alarm went off, my wife and I didn't panic. We had rehearsed it once. That was enough.
Aleks P., Rotterdam
It's the one product I hope I never need. And the one I couldn't imagine living without.
Nia O., São Paulo
We equipped every apartment in the building. Insurance premiums dropped 22%.
Building council, Frankfurt
Order online
Choose a length, pay securely, and it ships to your door. You mount it yourself in minutes.
Ships in 3 working days. Free delivery across India.
EN 341:2011 Class A · ISO 22846 · ANSI Z359.4 · CE Marked · TÜV Süd Verified
Questions
The questions we hear most, answered plainly.
Something else? Ask on WhatsAppFollow the inspection interval in your installation guide. A visual check costs nothing and takes a minute — do it whenever you think of it.
The device is speed-regulated from 30 to 125 kg — a 30 kg child descends at the same controlled speed as a 125 kg adult, automatically.
It needs no power at all. No batteries, no electronics — a fully mechanical friction-braking system, unaffected by an outage.
It's a permanent building fixture you install yourself. Follow the guide that ships with the unit — no engineer visit is required.
Yes — it's designed for repeated use, not a one-time deployment. Check your installation guide's inspection interval after any real descent.