First Alert 7020B Photoelectric Smoke Alarm, 120 Volt Rope 3 AH NI-CD battery with

3 AH NI-CD battery with double metal protection

Two coats are necessary

Bolt: 1" throw

up to 150 sq

Width : 1 inch

First Alert 7020B Photoelectric Smoke Alarm, 120 Volt Rope 3 AH NI-CD battery withHighlights: 120V with 9V battery back up (easy side load) Optipath 360 smoke sensor Hardwire photoelectric smoke alarm with escape light Install in bedroom, family room or kitchen Intelligent sensor reduces nuisance alarms Silence test button, low battery warning Quick connect pig tails Blinking power indicator light Automatically performs internal test Universal mounting bracket with screw slots Interconnect up to 18 units Boxed