The SB1B-28 is designed to provide standby alternator control for our BC410-H or BC462-H Alternators in a single bus, single battery electrical system.  It provides linear (“quiet”) voltage regulation, and solid-state over-voltage protection. Note: low-voltage monitoring and warning system designed for use with an incandescent lamp only (supplied). Will NOT function with a Vertical Power device (VPX). For Experimental Aircraft ONLY Installation Note: Select a location for mounting that will protect unit from heat, vibration, and water. The pilot side of the firewall, or inside the cabin near the instrument panel, is recommended.