The LCD throttle can judge the remaining power, and the ignition switch has a lock to ensure safety. Material : Rubber Color: Black Type: Locking Throttle Line length: about 150cm Mounting aperture: about 22mm Working voltage: Throttle DC1-4.2V, suitable for 48V battery Compatible: Suitable for 36V electric bicycles, electric scooters, etc. Accessories: suitable for handles with a diameter of 22-22.5mm------------ Quick Fix for Tight Fit: Loosen the back screw slightly if the throttle feels stuck. This allows it to rotate and snap back freely. Always disconnect battery power before installation. PLUG & PLAY 5-MINUTE SETUP: Achieve a quick, solder-free installation with this 3-pin full twist throttle. The universal design is a direct for Ridstar Q20/Q20Pro/H20/H26Pro and compatible with many ebikes and scooters, making it a hassle-free throttle upgrade. Precise color-coding ensures a correct and seamless connection every time SMOOTH ACCELERATION: Utilizes a high-accuracy Hall sensor for precise speed modulation and seamless acceleration. Delivers reliable control for navigating both city streets and off-road paths, providing a consistently smooth ride with this electric bike throttle CLEAR LCD DISPLAY FOR 48V SYSTEMS: Features a bright LCD battery indicator that shows remaining power at a glance on this e bike throttle. For optimal performance and accurate battery readings, this full twist throttle with key is intended for use with 48V systems ERGONOMIC COMFORT WITH ALL-WEATHER GRIP: Crafted from soft rubber with an anti-slip texture to reduce hand fatigue on long rides. This ebike twist throttle design ensures a secure and comfortable hold, even in wet conditions, ideal throttle for ebike enthusiasts ENGINEERED FOR EXTREME DURABILITY: Built with ABS and an IP66-rated to resist rain, dust, and vibrations. The reinforced cables on this Ridstar Q20 throttle are rigorously tested to withstand a 15kg (33lbs) pull force and 1 million+ bending cycles, guaranteeing reliable performance for years of daily use on rugged commutes INSTALL SAFELY & RIDE WITH CONFIDENCE: Remember to switch off your e-bike's battery before installing the throttle. To be sure you're getting a fully compatible product with our direct support, please check the seller at purchase. Questions? We're just a message away and reply quickly