Orbit Reader 20 Plus – User guide Version 1.0
Orbit Research Confidential and Proprietary Information 77
20 refreshable eight-dot braille cells; Refresh rate < 0.75
sec
8-key Perkins style keypad, with space bar
High-quality scissor-type keys
Power on/off button
4-way cursor keys and select key
2 panning keys, rocker type
Windows: NVDA, JAWS, Window-Eyes, System Access,
Dolphin ScreenReader
Mac OS X: Voiceover
iOS: Voiceover
Android: Brailleback
Chromebook: ChromeVox
1x Micro-B USB port, USB 2.0, for host interface, firmware
upgrade and battery charging
Bluetooth 2.1, Class 2
1x SD card (4GB to 32GB capacity)
User-replaceable, rechargeable Lithium-Ion battery;
PC charger: Charge over USB Port – 5V, 500 mA Max
Wall charger: Charge over USB Port – 5V, 1000 mA Max;
USB BC1.2 compliant charger required
Operational
Temperature: 5 °C to 45 °C
Humidity: 10% - 70% relative humidity
Storage
Temperature: -15 °C to 70 °C
Humidity: 5% - 90% relative humidity
30 Appendices
30.1 Appendix A - Computer Braille Chart