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SIAECOSYS SCJ3622-A is a round 3.6-inch TFT color speedometer display for electric motorcycles — distinctive circular instrument-pod form factor, 544×506 resolution. Per the QS Motor product page, this speedometer is **built for Fardriver controllers sourced through SIAECOSYS** supporting LIN or CAN BUS. Although the underlying hardware uses the same SIAECOSYS CAN/LIN protocol family as VOTOL controllers, the OEM only advertises Fardriver compatibility for this model. DC 12-150V pack-direct operating voltage. Features Bluetooth phone connectivity with call-reminder, 5W/4Ω × 2-channel amplifier output (built-in horn/speaker capability), two switchable main interfaces, and Chinese/English language switching. Shows speed, battery capacity (Li-ion or lead-acid), voltage, remaining mileage, and mode. IP65 rated, -20°C to +70°C. USB software upgrade. Available with or without horn accessory. Premium option for riders who want Bluetooth integration in a round analog-style housing.

In brief: E-bike display. Protocols: SiAECOSYS ONE-LIN, SiAECOSYS CAN BUS.

Specs verified Sep 9, 2026

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Specifications

Specifications

Protocols
SiAECOSYS ONE-LIN, SiAECOSYS CAN BUS
Screen Size
91mm
Light Control
No
Phone Charger
No
Bluetooth
Yes

Physical

Weight
400 g
IP Rating
IP65

Ports & Connectors

Main Connector
DisplayPower SwitchCAN Bus
PinWire colorFunction
1OrangeTurn Signal Left
2BlackPower Switch Signal
3GreenGround
4Light BlueTurn Signal Right
5BlueHigh Beam
6RedBattery +
7Green / BlackCAN Low
8Red / BlackCAN High
9PurpleOne-Wire Comm
Right Speaker
Other
PinWire colorFunction
1GreenSpeaker -
2BrownSpeaker +
Left Speaker
Other
PinWire colorFunction
1GreenSpeaker -
2BrownSpeaker +
USB Software Upgrade

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