Ciata Lighting Emergency Lights | Ultra-Bright White LED Light With Back-up Battery, Adjustable Lamps & 90-minute Minimum Capacity | Made from Engineering-Grade & Injection-Molded Thermoplastic Long lasting, efficient ultra-bright white LEDs. Adjustable LED lamp heads provides optimal center-to-center spacing. Charge rate/power "ON" LED indicator light and push to test switch for mandated code compliance testing. Internal solid-state transfer switch automatically connects the internal battery to LED lamp heads for minimum 90-minute emergency illumination. Surface mount via quick-connect back plate; fits most standard size junction boxes and snaps into place to make internal electrical connections. In order to avoid battery drainage, the battery included does not come connected within the unit when shipped. Please make sure to have the battery connected before testing