BRK Smoke Alarm - AC Powered w/ Battery Backup

Selling a HARD WIRE MODLE Brand new good for 10years from installation date when you install it. Purchased Amazon $45 BRK smoke alarm, AC powered with battery backup! This is the professional standard, model 3120BA. It features photoelectric and ionization detection. Comes with an alkaline battery back-up and two latching features. Includes alarm, AC connector assembly, dust cover, mounting bracket, AA battery, and user's manual. Made in Mexico This is the hard wire model you need an electrician to connect it we had to reorder one that you just use batteries we did not want to hire an electrician