EZ Access Threshold Modular Entry Ramp 2 x 12 x 34 Exam Tables Treatment 5V AA size alkaline batteries HERH6036TW 5V AA size alkaline batteries or optional rechargeable battery pack or AC power (charging stand) * Powerful Memory for 72 hours of data storage * Compatible Works with Nonin s full line of sensors * User friendly Large LED display * Colored LEDs indicate power to the unit and that handles are charging * Advanced circuitry for constant automatic safe charging and optimum lamp performance and life * Compact for convenience and mobility * Optional wall mount kit for permanently mounting to wall or cabinet * Optional specula tray conveniently stores swabs otoscope specula and curettes * Accepts 3 Upgraded Threshold Ramp * The Transitions Modular Entry Ramp is strong lightweight and safe for all users * Made of aluminum * Modular design * Usable size (in) ( H x L x W ) 2x12x34 * Weight ( lbs ) 700 * For wheelchairs & scooters * Usage guidelines 1Û 2¨ rise