LTWOO ER9 Bicycle Electronic Derailleur Groupset Kit 10S 11S 12Speed Wireless Shifter Lever Wireless Drivetrain Bike Parts

Note:If the product's light is not on, please replace the button battery CR2032.L-TWOO ER9 Wireless Electronic Shifting GroupsetCore Selling Points[WirelessControl]No cables, no clutter. Enjoy an ultra-clean bike setup with quick andhassle-free installation.[IPX7Waterproof Rating]Industry-leading waterproof protection. Built to handle rain, mud, andhigh-pressure washing with confidence.[High-PrecisionSignal Transmission]Powered by a 2.4G wireless protocol with a signal packet lossrate of less than 0.01%, ensuring instant and precise shiftingresponse.[Multi-SpeedCompatibility]One rear derailleur supports 10-speed, 11-speed, and 12-speed systems.Easily switch between gear modes through the APP with one click.[Smart APP FineTuning]Compatible with the official L-TWOO APP, featuring 32-levelmicro-adjustment for precise indexing and ultra-smooth shiftingperformance.TechnicalSpecificationsRear DerailleurModel: ER9 Wireless Short Cage Rear DerailleurMaterial: High-strength aluminum alloy bodyCage Length: 55mmCompatible Speeds: 10 / 11 / 12 SpeedCassette Compatibility:Minimum Cog: 10T / 11TMaximum Cog Capacity: 32T (Min) – 40T (Max)Battery: Built-in rechargeable lithium battery (non-removable)Battery Life: Approx. 1200–1500 km per chargeCharging Port: USB-CWeight: Approx. 311gWireless ShifterMaterial: Lightweight composite materialBattery Type: CR2032 button batteryBattery Life: Approx. 4–6 monthsConnection Protocols:2.4G / Bluetooth / ANT+Weight: Approx. 50gCompatible Bike Types1. 14–20 InchFolding BikesShort cage design provides increased ground clearance for more stable shiftingperformance.2. Flat BarRoad BikesDelivers a more responsive and race-inspired shifting experience.3. UrbanCommuter / Hybrid BikesLower maintenance requirements with more intuitive and user-friendly operation.User Guide & FAQHow to Activate theSystem?Upon receiving theproduct, press and hold the function button for 5 seconds todisable Transport Mode and activate the system.How to Pair theComponents?Before installation, pressand hold the shifter button for 3 seconds until the greenindicator stays on, then short press the rear derailleurfunction button to complete wireless pairing.How to Switch SpeedModes?Download the “L-TWOO”APP, connect via Bluetooth, and freely switch between 10-speed/ 11-speed / 12-speed modes.Package Includes1 × ER9 Wireless Rear Derailleur1 × Wireless Shifter1 × Charging Cable1 × User Manual