Rig Rite 4-Pin Timer Pod Only For Momentary Rocker Or Rotary Switch. Use with a Momentary Rocker or Rotary Switch. You can control the light intensity emitting from your boat's headlights with this dimmer control. It is compatible with most 14 to 22 foot fishing boats. Refer to manufacturer recommendations to ensure a proper fit. Features of Rig Rite 540 4-Pin Timer Pod Only For Momentary Rocker Or Rotary Switch Dimmer control On- off-on function Use with Momentary Rocker or Rotary Switch Load should not exceed 2.5 Amps Refer to manufacturer recommendations to ensure a proper fit Package Contents: Rig Rite 540 4-Pin Timer Pod Only For Momentary Rocker Or Rotary Switch Rig Rite 540: 4-Pin Timer Pod Only For Momentary Rocker Or Rotary Switch