SIAECOSYS SCJ3500

SIAECOSYS SCJ3500 is a 3.5-inch TFT color speedometer for electric motorcycles — sits between the SCJ313 (3.13") and SCJ3622-A (3.6") in the SIAECOSYS TFT family. 320×480 resolution, IP65 rated, −20°C to +70°C operating range. Dual-protocol: SIAECOSYS CAN BUS and ONE-LIN, firmware-selectable, plus direct Hall-effect speed sensor compatibility as a fallback. Wide operating voltage DC10–100V (narrower than the rest of the SCJ family's 12–150V range). Features Bluetooth pairing (appears as "CJ-BT" followed by 4 random digits) with caller-ID reminder, tire-pressure monitoring, 3W/4Ω single-channel amplifier output for a horn or speaker, and TPCY-C firmware upgrade. Two UI orientations available: landscape (default) or portrait (must be set pre-shipment by the seller — not user-switchable). Universal power display for Li-ion and lead-acid batteries. Backend configurable: voltage settings, voltage/speed coefficient, unit toggle, Bluetooth name, tire-pressure alerts.