Samsung SSA-R1100 Proximity Card Format nairobi Samsung SSA-R1100 Proximity Card Format Nairobi The Samsung SSA-R1100 proximity card format Nairobi is 125 kHz, 26 bit Wiegand friendly reader. This format reader by Samsung Nairobi is designed with a solvent casing and comes sealed in solid epoxy providing reliable indoor and outdoor performance and is weatherproof (IP66).