Ultra Bright Integrated Led Red Exit Sign and Emergency Light Combo with Battery Backup and 6 in. Letters (12-Pack)

Minimum 90-minute emergency illumination- an internal switch connects the battery to the emergency lights and makes sure they stay on for at least 90-minutes during a power outage. The fully automatic solid-state, 2-rate battery charger initiates charging in 24-hours. The unit also includes a charge rate/power “on” LED indicator light and a push-to-test switch, as required by code. Super ling-lasting rechargeable battery – The 3.6-volt ni-cad battery takes up to 24-hours to fully charge and can be used in temperatures from OCC to 400C. It can last up to 50,000-hours.