4 Keys Wheelchair Joystick Controller Fit for PG VR2 D50677 Electric Mobility Wheelchairs Accessory Item Type: Wheelchair Joystick Controller  Material: ABS  Fitment: Fit for PG VR2 D50677 Usage:  1. On/off button: VR2 switch button.Do not use this button to stop the wheelchair except in an emergency 2. Battery Meter: This is a 10-segment display if VR2 is turned on and gives the battery's charging status.In addition, any faults in the wheelchair's electrical system are displayed by this display 3. Maximum Speed: Is a 5-segment display that indicates the maximum speed setting or which drive  is selected.The documentation for the wheelchair will indicate whether VR2 is set to maximum speed or drive operation 4. Horn button: operate the wheelchair's horn 5. Speed/configuration curve lower button: This button reduces the maximum speed setting or selects a lower drive configuration curve. Speed/configuration curve increase button: This button increases the maximum speed setting or selects a higher drive configuration curve 6. Actuator buttons and LEDs: If the wheelchair is equipped with an actuator.This button will enter and exit the actuator adjustment mode.The LED will flash when the actuator adjustment mode is entered Joystick: Controls the speed and direction of the wheelchair.Push the stick in the direction you want to go.The farther you push, the faster you go.Release the joystick and the wheelchair stops and brakes automatically