HUSETOO Electric Thumb Throttle 300X for 7/8" (22mm) handlebars — 12–72V hall sensor, M8 waterproof plug

The HUSETOO 300X Electric Thumb Throttle is a compact, hall-sensor thumb accelerator designed to mount on 7/8" (22mm) left or right handlebars and works with 12V–72V electric bikes and scooters via an M8 waterproof plug.

This thumb throttle was engineered to give smooth, reliable speed control for a wide range of electric vehicles. It uses a hall-effect sensor for linear response, a three-pin connector for simple wiring, and an M8 waterproof plug to resist moisture during wet rides. The clamp-style mount fits standard 22mm grips and can be installed on either side to suit rider preference.

How does the HUSETOO 300X improve throttle control on e-bikes and scooters?

The hall-effect sensor inside the 300X creates a steadier, more proportional power response compared with simple potentiometer throttles. This results in predictable acceleration and better sensitivity at low speeds, useful for stop-and-go urban riding or gentle starts on hills.

• Hall sensor for linear throttle curve and minimal dead zones
• Three-wire output compatible with most e-bike controllers
• Smooth thumb lever action for precise modulation
• Works across a broad voltage range: 12V–72V

Will the throttle fit my handlebar and wiring setup?

The throttle clamps directly to 7/8" (22mm) handlebars and can sit on either the left or right side, so it integrates easily with common grips and controls. The supplied three-pin connector and M8 waterproof plug provide a neat, weather-resistant electrical connection to compatible controllers.

• Clamp mount for standard 22mm handlebars (7/8")
• Left- or right-hand installation without modifications
• M8 waterproof plug reduces corrosion risk in damp conditions
• Three-pin hall sensor connector compatible with many controllers

What voltages and vehicle types are supported by this throttle?

HUSETOO designed the 300X to function across an extensive voltage range, making it suitable for low-voltage scooters as well as higher-voltage e-bikes. It’s a flexible replacement or upgrade option for many electric bicycles, scooters, and DIY EV builds that accept a hall-effect thumb throttle.

• Rated for 12V, 24V, 36V, 48V, 60V and 72V systems
• Compatible with e-bikes, electric scooters, and small EV projects
• Ideal as a replacement for worn or inconsistent throttles
• Three-wire design works with most standard controllers

How durable and weather-resistant is the M8 plug and housing?

The 300X features an M8 waterproof plug and a sealed housing designed to keep moisture and road spray away from the electronics. While not indestructible, the construction improves longevity for daily commuters and riders who occasionally encounter rain or wet conditions.

• M8 waterproof plug for reduced exposure to water and dirt
• Sealed housing to protect the hall sensor and wiring entry
• Robust thumb lever and clamp for everyday use
• Simple three-pin connector minimizes loose contact points

Who this is for: The HUSETOO 300X is aimed at riders and DIY builders who need a dependable, responsive thumb throttle that fits standard 22mm handlebars. It's a good match for commuters, scooter riders, and e-bike owners seeking a weather-resistant replacement or an upgrade to a hall-effect control. Installers who want left- or right-side mounting, wide voltage compatibility, and a tidy M8 connector will find this throttle practical and versatile.