KALS BH-USA A-Drive Limit Switch

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UPC: 091037931719
SKU: 93171

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KALS BH-USA A-Drive Limit Switch

The KALS BH-USA A-Drive Limit Switch works with all sizes of the BH-USA A-Drive direct drive boat lift hoists. The switch is made for boat lift control models ending in an “A”. The “A” denotes auto stop capabilities. Factory wired for auto stop capabilities. FFC & ETL listed. 18 gauge / 3 wire harness.

The limit switch requires that the A-Drive direct-drive hoist use a BH-USA direct-drive shaft made after August of 2015.  It only works for Gem Remote Systems.

Online wiring and troubleshooting guide diagrams for each model of boat lift controls are available on our Technical Guides page.

Installation Instructions

Simply remove the dust cover on the front of the A-Drive direct-drive hoist to expose the end of the drive shaft that will have a tab that fits the limit switch. The limit switch uses the existing bolts to mount the special bracket. Limit switch-ready driveshaft is a must-have.

Auto-Stop Systems

Auto-stop systems allow you to raise or lower your lift to a specific position at the touch of a button. Requires the installation of one of four “limit switches”. The limit switch you need depends on the type of motor(s) that you are using on the boat lift. Without auto-stop capability, you will have to hold the button down to start and stop the boat lift movement.


Wire Length: 9 ft. 3 in.
Wire Size: 18 Gauge / 3 Wire
Box Size: 14 in. x 8 in.  x 4 in.
Product Weight: 3 lbs.
Manufacturer: Gem Remote Systems

Requires the A-Drive to be using a BH-USA Drive Shaft made AFTER August 2015.

Product Overview

  • Compatible with all BH-USA A-Drive direct-drive hoists
  • Works with Gem Remotes denoted with an "A" at the end of the product number
  • The limit switch allows for a designated place for the lift to stop at "top" or "bottom"
  • Online wiring guides available
  • Only works on Gem Remote Systems