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Model Difference

E10X E21A E21V R20A R23C R23P R26C R26P R27A R27V R29S
OS Linux Linux Linux Linux Linux Linux Linux Linux Linux Linux Android 5.1
Camera 1M × 3M 3M × × 3M 3M 3M 3M 3M
Keypad 1 Button 1 Button 1 Button 1 Button 1 Button 1 Button 1 Button 1 Button 3×5 physical pad 3×5 physical pad ×
Card reader × × × 13.56MHz & 125kHz 13.56 MHz × 13.56 MHz × 13.56MHz & 125kHz × 13.56MHz & 125kHz
IP Rating × IP65 IP65 IP65 IP65 IP65 IP65 IP65 IP65 IP65 IP65
RS485 × × × √ √ √ √ √ √ √ √
Wiegand × × × × × × × × √ √ √