RULE BILGE PUMP FLOAT SWITCH "RULE-A-MATIC" PLUS 040A. This electronic switch has a strong, fully-integrated, impact-resistant cover, which protects against debris and jamming. Dual anti-clog water slots provide a unique level of performance and protection. Abrasion-resistant wires exit at the top, keeping them out of the water, free of wear and tear. Manual testing feature allows an operations check. 12-32 volt. 20 amp. *MERCURY FREE*