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STEC12E08: ALPS STEC12E rotary pulse encoder, 24 - 24, vert., w. PB at reichelt elektronik
ALPS STEC12E08 Encoder 5 V DC 0.001 A 360 ° 1 pc(s) | Conrad.com
2) Alps Rotary Encoder Momentary Switch 30 Detents 360 Degrees PCB SMT for sale online | eBay