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 Jul 26, 2026
Where to Find
Prices tracked across 1 seller* Shipping estimates are for the contiguous US and may vary by location.
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Price History
Current best price $115.20. Over the past 90 days: low $112.64, high $126.69, average $120.12 — down 4% vs average.
- AliExpress - SIA Tech Store
- AliExpress - SIA Tech Store
| Date | Price | Shipping | Total | Change | Coupon | Rating | Sales | In Stock | Status |
|---|---|---|---|---|---|---|---|---|---|
AliExpress - SIA Tech Store(8 records) | |||||||||
| May 29, 202607:36 PM | $115.20 | $12.98 | $128.18 | $0.00 | SSUS14−$14.00 | — | — | No | active |
| May 28, 202605:13 PM | $115.20 | $12.98 | $128.18 | $0.24 | — | — | — | No | active |
| May 27, 202606:31 PM | $115.44 | $13.02 | $128.46 | $0.24 | — | — | — | No | active |
| May 23, 202606:22 PM | $115.20 | $12.98 | $128.18 | $2.56 | — | — | — | No | active |
| May 22, 202604:19 PM | $112.64 | $12.98 | $125.62 | $0.06 | USSS05−$5.00 | — | — | No | active |
| May 21, 202604:23 PM | $112.70 | $12.99 | $125.69 | $0.00 | USSS12−$12.00 | — | — | No | active |
| May 19, 202604:26 PM | $112.70 | $12.99 | $125.69 | $10.59 | USSS05−$5.00 | — | — | No | active |
| May 18, 202604:22 PM | $123.29 | $12.96 | $136.25 | Initial | USSS12−$12.00 | — | — | No | active |
AliExpress - SIA Tech Store(9 records) | |||||||||
| May 29, 202607:04 PM | $126.69 | $11.80 | $138.49 | $0.12 | SSUS14−$14.00 | — | — | No | active |
| May 28, 202604:51 PM | $126.57 | $11.78 | $138.35 | $0.06 | — | — | — | No | active |
| May 27, 202606:12 PM | $126.51 | $11.77 | $138.28 | $0.24 | — | — | — | No | active |
| May 25, 202610:57 PM | $126.27 | $11.74 | $138.01 | $0.00 | — | — | — | No | active |
| May 23, 202606:03 PM | $126.27 | $11.74 | $138.01 | $2.81 | — | — | — | No | active |
| May 22, 202604:00 PM | $123.46 | $11.74 | $135.20 | $0.06 | USSS05−$5.00 | — | — | No | active |
| May 21, 202604:04 PM | $123.52 | $11.75 | $135.27 | $0.00 | USSS12−$12.00 | — | — | No | active |
| May 19, 202604:07 PM | $123.52 | $11.75 | $135.27 | $0.23 | USSS05−$5.00 | — | — | No | active |
| May 18, 202604:03 PM | $123.29 | $11.72 | $135.01 | Initial | USSS12−$12.00 | — | — | No | active |
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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 + |
