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

HUSETOO 300X is a thumb-operated electric throttle designed to fit 7/8" (22mm) left or right handlebars and work with 12–72V e-bike and e-scooter systems via an M8 waterproof 3‑pin connector.

This compact thumb throttle converts thumb pressure into smooth, hall‑sensor throttle output for electric bicycles, scooters, and other light electric vehicles. Built with a clamp mount for direct installation and a sealed M8 plug for weather resistance, the 300X is engineered as a durable replacement or upgrade for worn stock throttles. It supports a broad voltage range (12v–72v) and is compatible with common hall‑effect controllers that accept a three‑wire signal.

How does the 300X fit different handlebars and sides?

The 300X clamps directly to 7/8" (22mm) handlebars and can be installed on either left or right side without modification. Its split‑clamp design allows a straightforward bolt‑up mounting that holds secure under riding vibration while keeping the thumb lever accessible.

• Fits standard 7/8" (22mm) handlebar tubing
• Split clamp for easy installation with basic tools
• Ambidextrous design—install on left or right hand positions
• Low-profile lever to avoid snagging while riding

What electrical systems and controllers does it work with?

The throttle uses a hall sensor and a three‑wire output to communicate with the motor controller, making it compatible with most e-bike and e-scooter controllers that accept standard hall throttle signals. It tolerates a wide input voltage range, so it fits many vehicle battery architectures without extra electronics.

• Works with 12v, 24v, 36v, 48v, 60v, and 72v battery systems
• M8 waterproof 3‑pin connector for secure controller hookup
• Hall‑effect sensing for consistent, jitter‑free throttle response
• Three-wire output (signal, +5V reference, ground) typical of controllers

How durable and weatherproof is the HUSETOO 300X?

The housing and sealed M8 plug help protect internal electronics from moisture and dust, making the 300X suitable for everyday commuting and outdoor use. Materials and construction focus on long service life under repeated thumb actuation and road vibration.

• M8 waterproof connector reduces corrosion risk at the wiring junction
• Robust plastic housing resists impacts and UV exposure
• Screw clamp holds tight against vibration and shocks
• Hall sensor internals avoid mechanical wear common to potentiometer throttles

What should I expect during installation and setup?

Installation is straightforward for anyone comfortable with basic bike or scooter maintenance. The throttle requires mounting, wiring to the controller with the 3‑pin connector, and a quick functional check to confirm signal direction and range with your controller settings.

• Mount with a screwdriver or small wrench—no special tools required
• Plug the M8 3‑pin into the controller or adapter harness
• Verify throttle direction and adjust controller settings if needed
• Configure deadband and acceleration limits in controller software if available

Who is this for? The HUSETOO 300X thumb throttle is aimed at riders and mechanics needing a reliable replacement or upgrade for electric bicycles, scooters, and small EVs that use 7/8" handlebars and hall‑effect throttles. It suits commuters, DIY e‑vehicle builders, rental fleet maintainers, and anyone who prefers a compact thumb control over a twist or full‑hand throttle for more precise low‑speed modulation.