Samsung SSA-R1101 Mifare Smart Card Format nairobi Samsung SSA-R1101 Mifare Smart Card Format Nairobi The Samsung SSA-R1101 Mifare Smart Card Format Nairobi is a 13.56MHz, 34 bit Wiegand compatible reader. The SSA-R1101 is designed with a thinner casing and comes closed in solid epoxy providing reliable indoor or outdoor presentation. Other features of SSA-R1101 are reverse polarity protection and weatherproof that makes it very useful.