Introducing the Max High Output Self Diagnostic Emergency Lighting Unit – the ultimate solution for reliable, high-performance illumination when you need it most. Designed with precision and durability in mind, the Max combines advanced self-diagnostic features with robust construction for long-lasting reliability in any environment. Features include: 3.6V, 800 mAh rechargeable battery with 90 minutes of reliable illumination in case of power failure, 48-hour recharge, wide or narrow lens option, cold weather option, and easy installation. The self-diagnostic monitoring system checks the battery, lamp, charger, and transformer every 5 seconds, keeping you informed of any issues without draining the battery or illuminating the lamps. It also features monthly, semi-annual, and annual self-tests for ongoing peace of mind.