Stealth Laboratories LB-100 low battery cut­off and master power switch. Protects batteries against deep discharge during extended power outages. The battery is automatically disconnected when its voltage reaches 8.9 Volts. When AC power is restored the battery can be recharged by the power supply with no damage. A switch provides handy disconnection of AC and battery power. LED indication of AC power is provided. In addition AC surge suppression is provided.