The stair climber for your wheelchair

The s-max is particularly suited for use with compact children’s wheelchairs and can be attached to seats measuring 24 cm wide or more.

The sophisticated safety concept includes brakes that automatically stop at the edge of each step.

Mobility is quality of life —

overcome daily obstacles comfortably in your own wheelchair

To keep up with the times we developed the s-max, i.e. innovative technology born of original and creative ideas.

The s-max’s thought-out safety concept includes brakes that stop automatically at the edge of each step. The intelligent technology is responsible for the particularly safe and effortless climbing process. An engine immobiliser prevents unauthorized use thus adding extra safety.

The climbing speed is individually adjustable to adapt to various climbing situations. If desired the single step mode can be turned off.

The s-max is quickly and easily mounted and, due to its compact measurements, it is also suitable for particularly narrow wheelchairs – minimum seat width is 24 cm.

Climbing stairs in the dark is made easy by the integrated LEDs.

Innovative technology and unique ideas —

for more safety and comfort

The control unit and the grips are designed considering the latest ergonomic findings.

Improved technology and new design —;

with the s-max you overcome safely all barriers

  • LEDs for safe operation in the dark
  • Engine immobilser to prevent unauthorized use
  • ComfortStep - for a comfortable driving experience
  • Single-step-mode
  • Automatic braking function when descending
  • High versatility, even on extremely narrow stairs
  • No damage on stairs and floor coverings

ComfortStep —

The combination of pleasant driving characteristics and a comfortable climbing experience

ComfortStep was developed for the stair climber series s-max and c-max. It revolutionizes the previously existing climbing kinematics of these stair climbers. For the transported person this is particularly evident because of a comfortable climbing process characterized by low vibrations.

ComfortStep is a standard component of each s-max and c-max stair climber.It works in the single step mode as well as in the regular climbing mode. The adaptation to a variety of step heights is a further function provided by ComfortStep. This makes an easy and individual adaptation to your particular stairs possible.


Advantages that convince

  • Pleasant and comfortable climbing process
  • Individually adjustable to various steps’ heights
  • Available for the single step mode as well as the regular climbing mode

moving —

the s-max in action

 s-max 135s-max 160
Total weight approved (1) 155 kg 180 kg
Max. weight of the person 115 kg 140 kg
Climbing speed adjustable adjustable
Steps per minute (2) 5 — 20 8 — 23
Range with one charge of the batteries (2) approx. 26 floors (equates 390 steps) approx. 20 floors (equates 300 steps)
Max. height of step I extended 220 I 235 mm
Width, handle | climbing unit
(without armrests)
495 mm
Depth | Depth with folded foot rest 320 mm 315 mm
Height min. | max 1181 | 1592 mm
Batteries 2 x 12 V / 3.3 Ah
Direct current motor 24 V / 200 W 24 V / 275 W
Weight, climbing unit 16.1 kg 17.5 kg
Weight, battery pack 3.1 kg
Total weight 22.4 kg 23.5 kg
(1) The climbing speed as well as the range with one charge of the batteries is reduced if the ComfortStep is activated. The range also depends on the weight of the person seated.
(2) Never use the stair climber to climb stairs with too little depth because it is no longer possible for the main wheels to touch the steps safely.

In the interest of progress we reserve the right for technical changes.

s-max D1352s-max D1601

s-max D1352s-max D1601
300680 300424


Further information on the product

Intelligent accessories

for your s-max

Equipped for all kinds of situations

with the universal rack SDM7

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