A stair lift (also called a chair lift) is a mechanical device installed on a staircase to help people — especially those with limited mobility — safely go up and down stairs while seated. 🪜 What It Is A stair lift is basically: A motorized chair (or platform) Mounted on a rail or track fixed along the side of a staircase A user sits on the chair (or stands on the platform), secures the safety belt, and the lift smoothly travels up or down the stairs along the rail. 🧠 How It Works An electric motor powers the movement along the rail. The user controls it with: A joystick or buttons on the armrest Remote controls (to send it up/down when not seated) Modern stair lifts have safety sensors that stop if something blocks the stairs. 🪑 Types 1. Straight Stair Lifts For stairs that go straight up without turns. 2. Curved Stair Lifts Custom-built rails for staircases with bends, landings, or turns. 3. Outdoor Stair Lifts Weather-resistant models for exterior stairs. 4. Platform Lifts Larger platforms for people who use wheelchairs (instead of a chair). 👍 Key Features Safety belt Swivel seat (easier to get on/off) Foldable design (to save space) Battery-powered (works even during power cuts) Obstruction sensors and soft start/stop 👤 Who It Helps Stair lifts are ideal for: People with mobility challenges Seniors who find stairs tiring or unsafe Anyone with injuries or balance issues If you want, I can also explain how much they cost, how installation works, or what to consider before buying.