
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-grade 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 3.5 metres. Scroll to see which length reaches yours.
0
m · of 3.5 m
reaches 1F




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
Figures you can look up. No adjectives.
What it is made of
Where it goes
One device, mounted once. Anywhere people live or work above the second floor.
3/3
Standards met
Six years of engineering
Certified and tested











Order online
Choose a length, pay securely, and it ships to your door. Our team installs it at your location.
Ships in 3 working days. Free delivery across India.
EN 341:2011 Class A · ISO 22846 · CE Marked
Questions
The questions we hear most, answered plainly.
Something else? Ask on WhatsAppInspect it once every 4 weeks, and before any use.
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 quick installation, done by our team at your location.
Not after an emergency descent — it must then be taken out of service. Service life is 3 years.