Features Panel cutout: .880" x 1.080", SPST (on/off) rocker switch, 20A @ 125VAC; 28V lamp indicator, 1/4" tabs, Color: illuminated green lens; black body, Legend: I/O Fits: Switch Plate Model(s) This Part Fits: Peri Pro II, Peri Pro III Notes: This switch fits Peri-Pro II (serial number 15143 and above)