For safety, the key is removable only in the off position. The heavy-duty switches have plated-steel casings to resist corrosion. The 5-A 12-Vdc switches are available with two 12-in. wire leads with ring terminals and are sealed with a rubber boot for protection against dirt and moisture.

Cole Hersee Co., 20 Old Colony Ave., Boston, MA 02127, (617) 268-2100,