Condition New
Superfit Rectangular Magnetic Safety Key – Treadmill Replacement - Measure Before Ordering
This rectangular magnetic safety key is commonly used on Superfit treadmills (Costway) and similar compact folding or 2-in-1 models. It features a small rectangular magnet housing designed for consoles with narrow, flat magnetic switch plates rather than deep insert slots.
🔩 Key Features
- Compact Rectangular Design
Slim profile fits smaller console safety switch areas found on many Superfit-style treadmills. - Magnetic Emergency Stop Function
Instantly shuts off the treadmill when the key is pulled—this acts as the machine’s primary safety system. - Clip-On Safety Lanyard
Includes cord and clothing clip for automatic shutoff during use. - Lightweight & Easy to Use
Simple placement and removal for quick start/stop operation.
📐 Specifications
- Overall Dimensions: 14 × 35 mm (Approx. 0.55" × 1.38")
- Shape: Rectangular
- Magnet Type: Flat magnetic contact
- Material: Durable ABS plastic housing
- Attachment: Safety cord with clip
🏃 Compatibility
Primarily used on:
- Superfit / Costway treadmills (2-in-1 folding models, under-desk treadmills)
- Some compact residential treadmills with narrow rectangular switch plates
Superfit is a Costway brand with multiple residential treadmill models that use proprietary replacement parts like safety keys.
⚙️ How It Works
- Place Key on Console
Magnet completes the circuit so the treadmill can run. - Attach Clip to Clothing
Secures to your shirt or waistband. - Emergency Stop Activation
If pulled away, the treadmill immediately shuts off.
✅ Compatibility Notes
- Best for flat or shallow safety switch areas
- Not compatible with round or large-diameter magnet keys
- Must match both shape (rectangular) and size (14×35mm)
💡 Why This Size Matters
- Smaller footprint = fits compact consoles
- Prevents loose contact or intermittent shutdown
- Ensures proper alignment with narrow magnetic plates
Used on the following models