SIAECOSYS SCJ6877-E
6.8-inch TFT display (1280×480, IP65) supporting both SiAECOSYS ONE-LIN and SiAECOSYS CAN BUS protocols for VOTOL controllers. LIN mode displays battery voltage; CAN mode displays battery SOC when paired with a CAN-BUS battery that matches the speedometer's protocol. Features Bluetooth connectivity with phone projection (no app required), FM radio playback, 8W×2 channel audio output, and full touch-screen control. Wide operating voltage range (DC 12–150V). Supports lithium and lead-acid battery display. Bluetooth caller ID and music support.
In brief: E-bike display. Protocols: SiAECOSYS ONE-LIN, SiAECOSYS CAN BUS.
Specs verified Jul 26, 2026
Where to Find
Prices tracked across 3 sellersAliExpress - SIAECOSYS Electric Drive Store
Out of stockAliExpress - SiAECOSYS Electric Powertrain Store Store
Out of stockAliExpress - SIA Tech Store
Out of stockAliExpress - SIA Tech Store
Out of stock* Shipping estimates are for the contiguous US and may vary by location.
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Price History
Current best price $158.36. Over the past 90 days: low $158.11, high $174.92, average $166.42 — down 5% vs average.
- AliExpress - SIAECOSYS Electric Drive Store
- AliExpress - SIA Tech Store
- AliExpress - SIA Tech Store
- AliExpress - SiAECOSYS Electric Powertrain Store Store
| Date | Price | Shipping | Total | Change | Coupon | Rating | Sales | In Stock | Status |
|---|---|---|---|---|---|---|---|---|---|
AliExpress - SIA Tech Store(13 records) | |||||||||
| May 29, 202607:55 PM | $171.84 | $12.98 | $184.82 | $0.00 | SSUS24−$24.00 | — | — | No | active |
| May 28, 202605:26 PM | $171.84 | $12.98 | $184.82 | $0.36 | — | — | — | No | active |
| May 27, 202606:38 PM | $172.20 | $13.02 | $185.22 | $0.36 | — | — | — | Yes | active |
| May 23, 202606:29 PM | $171.84 | $12.98 | $184.82 | $12.67 | — | — | — | Yes | active |
| May 22, 202604:26 PM | $159.17 | $12.98 | $172.15 | $0.08 | USSS05−$5.00 | — | — | Yes | active |
| May 21, 202604:30 PM | $159.25 | $12.99 | $172.24 | $2.71 | USSS12−$12.00 | — | — | Yes | active |
| May 19, 202604:33 PM | $161.96 | $12.99 | $174.95 | $0.34 | USSS05−$5.00 | — | — | Yes | active |
| May 18, 202604:29 PM | $161.62 | $12.96 | $174.58 | $13.22 | USSS12−$12.00 | — | — | Yes | active |
| May 17, 202602:36 PM | $174.84 | $12.99 | $187.83 | $0.00 | — | — | — | Yes | active |
| May 16, 202602:29 PM | $174.84 | $12.99 | $187.83 | $0.00 | — | — | — | Yes | active |
| May 15, 202601:37 PM | $174.84 | $12.99 | $187.83 | $0.08 | SRUS02−$2.00 | — | — | Yes | active |
| May 14, 202604:14 PM | $174.92 | $13.00 | $187.92 | $0.00 | SRUS04−$4.00 | — | — | No | active |
| May 12, 202612:04 PM | $174.92 | $13.00 | $187.92 | Initial | SRUS16−$16.00 | — | — | Yes | active |
AliExpress - SIA Tech Store(13 records) | |||||||||
| May 29, 202607:54 PM | $171.84 | $12.98 | $184.82 | $0.00 | SSUS24−$24.00 | — | — | No | active |
| May 28, 202605:25 PM | $171.84 | $12.98 | $184.82 | $0.36 | — | — | — | No | active |
| May 27, 202606:38 PM | $172.20 | $13.02 | $185.22 | $0.36 | — | — | — | No | active |
| May 23, 202606:29 PM | $171.84 | $12.98 | $184.82 | $12.67 | — | — | — | No | active |
| May 22, 202604:25 PM | $159.17 | $12.98 | $172.15 | $0.08 | USSS05−$5.00 | — | — | No | active |
| May 21, 202604:29 PM | $159.25 | $12.99 | $172.24 | $0.00 | USSS12−$12.00 | — | — | No | active |
| May 19, 202604:32 PM | $159.25 | $12.99 | $172.24 | $0.32 | USSS05−$5.00 | — | — | No | active |
| May 18, 202604:29 PM | $158.93 | $12.96 | $171.89 | $12.99 | USSS12−$12.00 | — | — | No | active |
| May 17, 202602:35 PM | $171.92 | $12.99 | $184.91 | $0.00 | — | — | — | No | active |
| May 16, 202602:28 PM | $171.92 | $12.99 | $184.91 | $0.00 | — | — | — | No | active |
| May 15, 202601:36 PM | $171.92 | $12.99 | $184.91 | $0.10 | SRUS02−$2.00 | — | — | No | active |
| May 14, 202604:13 PM | $172.02 | $13.00 | $185.02 | $0.00 | SRUS04−$4.00 | — | — | No | active |
| May 12, 202612:03 PM | $172.02 | $13.00 | $185.02 | Initial | SRUS16−$16.00 | — | — | No | active |
AliExpress - SIAECOSYS Electric Drive Store(13 records) | |||||||||
| May 29, 202607:53 PM | $158.36 | $12.98 | $171.34 | $0.00 | SSUS24−$24.00 | — | — | No | active |
| May 28, 202605:24 PM | $158.36 | $12.98 | $171.34 | $12.95 | — | — | — | No | active |
| May 27, 202606:37 PM | $171.31 | $13.02 | $184.33 | $12.95 | — | — | — | Yes | active |
| May 23, 202606:28 PM | $158.36 | $12.98 | $171.34 | $0.00 | — | — | — | Yes | active |
| May 22, 202604:25 PM | $158.36 | $12.98 | $171.34 | $0.08 | USSS05−$5.00 | — | — | Yes | active |
| May 21, 202604:29 PM | $158.44 | $12.99 | $171.43 | $0.00 | USSS12−$12.00 | — | — | Yes | active |
| May 19, 202604:32 PM | $158.44 | $12.99 | $171.43 | $0.33 | USSS05−$5.00 | — | — | Yes | active |
| May 18, 202604:28 PM | $158.11 | $12.96 | $171.07 | $12.94 | USSS12−$12.00 | — | — | Yes | active |
| May 17, 202602:33 PM | $171.05 | $12.99 | $184.04 | $0.00 | — | — | — | Yes | active |
| May 16, 202602:28 PM | $171.05 | $12.99 | $184.04 | $0.00 | — | — | — | Yes | active |
| May 15, 202601:36 PM | $171.05 | $12.99 | $184.04 | $0.08 | SRUS02−$2.00 | — | — | Yes | active |
| May 14, 202604:12 PM | $171.13 | $13.00 | $184.13 | $0.00 | SRUS04−$4.00 | — | — | No | active |
| May 12, 202612:03 PM | $171.13 | $13.00 | $184.13 | Initial | SRUS16−$16.00 | — | — | Yes | active |
AliExpress - SiAECOSYS Electric Powertrain Store Store(13 records) | |||||||||
| May 29, 202607:56 PM | $159.17 | $12.98 | $172.15 | $0.00 | SSUS24−$24.00 | — | — | No | active |
| May 28, 202605:27 PM | $159.17 | $12.98 | $172.15 | $13.03 | — | — | — | No | active |
| May 27, 202606:39 PM | $172.20 | $13.02 | $185.22 | $13.03 | — | — | — | No | active |
| May 23, 202606:30 PM | $159.17 | $12.98 | $172.15 | $0.00 | — | — | — | No | active |
| May 22, 202604:26 PM | $159.17 | $12.98 | $172.15 | $0.08 | USSS05−$5.00 | — | — | No | active |
| May 21, 202604:30 PM | $159.25 | $12.99 | $172.24 | $0.00 | USSS12−$12.00 | — | — | No | active |
| May 19, 202604:34 PM | $159.25 | $12.99 | $172.24 | $0.32 | USSS05−$5.00 | — | — | No | active |
| May 18, 202604:30 PM | $158.93 | $12.96 | $171.89 | $12.99 | USSS12−$12.00 | — | — | No | active |
| May 17, 202602:37 PM | $171.92 | $12.99 | $184.91 | $0.00 | — | — | — | No | active |
| May 16, 202602:29 PM | $171.92 | $12.99 | $184.91 | $0.00 | — | — | — | No | active |
| May 15, 202601:37 PM | $171.92 | $12.99 | $184.91 | $0.10 | SRUS02−$2.00 | — | — | No | active |
| May 14, 202604:15 PM | $172.02 | $13.00 | $185.02 | $0.00 | SRUS04−$4.00 | — | — | No | active |
| May 12, 202612:04 PM | $172.02 | $13.00 | $185.02 | Initial | SRUS16−$16.00 | — | — | No | active |
Reviews
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Specifications
Specifications
- Protocols
- SiAECOSYS ONE-LIN, SiAECOSYS CAN BUS
- Screen Size
- 173mm
- Phone Charger
- No
- Bluetooth
- Yes
Physical
- Dimensions (L×W×H)
- 222mm × 106mm × 44mm
- 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 | Pink | One-Wire Comm |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Green | Speaker - |
| 2 | Brown | Speaker + |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Green | Speaker - |
| 2 | Brown | Speaker + |
