First Alert BRK ADF-12 BRK Smoke Alarm Adapter Plug for Firex Hardwire Smoke Alarms, White/Black, Pack of 12

First Alert ADF-12 BRK/Fire Smoke Alarm Adapter Plugs take the hassle out of replacing 120-volt hardwired Fire smoke alarms which are old-fashioned or expired. Ideal for retrofitting, these convenient smoke alarm adapter plugs get rid of the desire for rewiring when replacing an existing Fire detector with a BRK or First Alert alarm. Simply insert the three-pin male connector into your existing Fire ceiling plug, insert the female connector into your First Alert or BRK smoke alarm, and protected the smoke alarm into place. Compatible with a variety of hardwired First Alert, BRK, and Fire smoke alarms, these adapter plugs help you save time and installation costs when you find yourself updating the fire safety system of your house or facility. The package includes 12 adapters–enough to put in 12 smoke detectors. Package dimensions 1.85 x 8.39 x 5.24 inches, individual unit dimensions are 3 x 1 x 1 inches

Easily replace hardwired Firex smoke alarms with First Alert or BRK smoke alarms
Ideal for retrofitting jobs, Package dimensions 1.85 x 8.39 x 5.24 inches, individual unit dimensions are 3 x 1 x 1 inches
Compatible with SC9120B, 4120-series, 9120-series, 7010-series, 5919, 2002RAC, SC6120B, HD6135FB, and RM3 First Alert or BRK alarms
Compatible with 406 (G-6), 4518 (ADC), 4618 (FADC), 484 (PG-40), 4480 (PAD), 5700 (ADH), and 499 Firex alarms
Includes 12 smoke alarm adapter plugs.Refer to the PDF attached below in Technical Specification for User Manual for compatible models and brands