Nidec Copal Electronics Cs-4-12Xa.
ROTARY SWITCH, SP4T, 0.1A, 16VAC, SMD; No. of Switch Positions:4 Position; No. of Poles:1 Pole; Angle of Throw:45°; Contact Current AC Max:100mA; Contact Voltage AC Max:16V; Product Range:CS-4 Series; Illumination:Non Illuminated