12. KEELOQ Button Status ASCII Character S3 S2 S1 S0 KEELOQ Button KEELOQ Button with Low battery 0 0 0 1 A a 0 0 1 0 B b 0 0 1 1 C c 0 1 0 0 D d 0 1 0 1 E e 0 1 1 0 F f 0 1 1 1 G g 1 0 0 0 H h 1 0 0 1 I i 1 0 1 0 J j 1 0 1 1 K k 1 1 0 0 L l 1 1 0 1 M m 1 1 1 0 N n 1 1 1 1 O o