HUSETOO 300X Electric Thumb Throttle for 7/8" (22mm) Handlebars — M8 Waterproof Plug, 12–72V Hall Sensor

The HUSETOO 300X electric thumb throttle is a compact, hall-sensor thumb accelerator designed to fit 7/8" (22mm) left or right handlebars and work with 12V–72V e-bike and scooter systems via an M8 waterproof plug.

If you need a simple, reliable way to control speed on an electric bike, scooter, or e-scooter, the 300X delivers a direct, three-wire hall-effect signal with a durable clamp mount and sealed connector. It replaces worn throttles or upgrades stock controllers with smooth, proportional input across a wide voltage range (12V–72V). The unit’s three-pin wiring and M8 waterproof connector keep your electrical junctions tidy and protected from weather while the thumb-operated lever gives comfortable, precise control for urban commuting or recreational rides.

How does the 300X connect to my e-bike or scooter?

The 300X uses a three-wire hall-effect signal and an M8 waterproof plug for a clean, reliable connection to motor controllers that accept hall throttle inputs. Installation is plug-and-play on many systems, or it can be wired directly to compatible controllers using the three-pin layout.

• Three-pin hall sensor output for proportional speed control
• M8 waterproof connector for secure, weather-resistant mating
• Works with 12V, 24V, 36V, 48V, 60V and 72V systems that accept hall throttles
• Compatible with most standard 7/8" (22mm) handlebars, left or right side

Will the throttle fit my handlebars and handedness?

The clamp is designed for a 7/8" (22mm) handlebar diameter and can be mounted on either left or right side, giving flexible placement to match rider preference or accessory layout. The lever angle and clamp screw location make it easy to rotate for a comfortable thumb position.

• Standard 22mm clamp fits most e-bike and scooter bars
• Mounts on left or right side without modifications
• Space-efficient profile to avoid interference with grips and controls
• Single screw clamp for quick installation and adjustment

What performance and durability features does it offer?

Inside, the hall sensor delivers consistent, linear throttle feedback for smooth acceleration and reliable cut-in behavior. The housing and M8 connector are built to resist moisture and dust, and the thumb lever is made for repeated use in daily commuting or leisure riding.

• Hall-effect sensing for stable, jitter-free input
• Sealed M8 plug to reduce corrosion and electrical faults
• Robust plastic housing and reinforced lever for longevity
• Designed for frequent use — suitable for commuters and rental fleets

How easy is installation and maintenance?

Installation is straightforward: clamp to the handlebar, route the cable, and mate the M8 plug or attach the three wires to the controller. Maintenance is minimal — keep the connector clean and periodically check the clamp screw and wiring for secure fitment.

• Quick clamp-on mount requires basic tools only
• Plug-and-play option with M8 compatible controllers
• Low maintenance; inspect connector and fastener occasionally
• Replacement part ideal for upgrades or repairs

Who is this for: The HUSETOO 300X thumb throttle suits anyone upgrading or repairing the throttle on an electric bicycle, scooter, or e-scooter that uses a hall-effect input and 7/8" handlebars. It’s a practical choice for daily commuters, rental operators, DIY e-bike builders, and recreational riders who want dependable, weather-resistant speed control without complex installation.