The Keyde BTB140 Bluetooth Wireless Button is a smart e-bike controller designed for effortless level adjustment while riding. It connects wirelessly to your e-bike motor via Bluetooth, syncs in real time with the Keyde APP and BTD260 display, and features a replaceable battery — making it an ideal upgrade for any DIY electric bicycle build.
Handlebar-Mounted Stereo Button
Adjust your e-bike assist levels instantly while riding — no need to look down or stop. The ergonomic handlebar button placement makes level control safer and more intuitive, especially on technical terrain or in traffic.
Compatible Pairing — App & Display
The BTB140 wirelessly controls motor assist levels and pairs seamlessly with the Keyde App and BTD260 wireless display. View real-time riding data, adjust motor parameters, and customize your e-bike experience — all from one ecosystem.
Easy Installation on Any E-Bike
Compact and lightweight, the BTB140 installs quickly on standard handlebars. Its minimal footprint keeps your cockpit clean while adding powerful wireless control to your DIY electric bike setup.
Product Dimensions & Compatibility
Fits standard handlebar diameters: 22.2mm and 31.8mm — compatible with most road, mountain, and DIY e-bike builds.
