SIAECOSYS SCJ3622-A
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
| Pin | Wire color | Function |
|---|---|---|
| 1 | Orange | Turn Signal Left |
| 2 | Black | Power Switch Signal |
| 3 | Green | Ground |
| 4 | Light Blue | Turn Signal Right |
| 5 | Blue | High Beam |
| 6 | Red | Battery + |
| 7 | Green / Black | CAN Low |
| 8 | Red / Black | CAN High |
| 9 | Purple | One-Wire Comm |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Green | Speaker - |
| 2 | Brown | Speaker + |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Green | Speaker - |
| 2 | Brown | Speaker + |






