CH1 CH8 CH9 Code No. PART No. Dimensions (mm) CHX 1 (EX 87R) 2084673 12 Volt 2-CH 1(E 87R) 2095939 diameter 6.10 x 9.6       CHX 8 (CHX 8-9) 3420893 12 Volt 1-CH 8   diameter 6.1 x 9.5 1-CH 9 2932T55 diameter 6.1 x 9.5