Generic Thumb Throttle with Voltage Display & Key Switch
Thumb throttle with integrated key-operated power switch and digital LED voltage display. The green LED readout shows real-time battery voltage (12V–72V range), compatible with lithium-ion, LiFePO4, and lead-acid battery systems. Mounts on standard 22.2mm handlebars. Includes 2 keys. Wiring terminates in a 3-pin SM connector (throttle signal + power switch) plus 2 female spade terminals (power input).
In brief: Thumb throttle. From $7.
Specs verified Jun 11, 2026
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Specifications
Specifications
- Type
- Thumb
- Power Switch
- Yes
- Battery Indicator
- Yes
- Output Voltage
- 0.8–4.2V
Ports & Connectors
| Pin | Wire color | Function |
|---|---|---|
| 1 | Blue | Power Switch Signal |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Yellow | Battery + |





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