This is a stamped anodized aluminum bilge pump switch. This product features both automatic and manual settings. Two means of alarm (visual and sound) are activated when water level in your bilge is beyond your Bilge pump float switch level. Operation Manual: See picture attached to this listing with drawings and instructions. Measurements: 2.5" by 4.5" Installation:The pump is mounted in the bilge with its operating float switch mounted 20mm higher than pump. A second alarm float switch is than installed approximately 7.87" above the pump float switch. Operation: 1. With the control switch on manual, the pump float switch will be by passed and the pump runs continuously. (Take care: should be ensured the pump does not run dry) 2. With the control switch on auto, the pump will be controlled automatically by the lower float switch.
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