April 15, 2008

To: Whom it may concern
From: John McGonigle, Applications Technology Manager
Subject: Notes on the interconnection of Kidde® and Firex® alarms

To Whom It May Concern:

This letter is an updated version of a previous letter regarding the interconnection of Kidde and Firex alarms. It has been updated to include new information regarding the ability to interconnect the Kidde hardwired CO alarms (models 900-0120 and 900-0121) and the new Silhouette smoke alarm to certain Firex alarms. Firex and Kidde have received an Underwriters Laboratory (UL) listing to interconnect the following detection products:

Firex alarms of models:

• AD (1018 series)
• ADC (4518 series) and
• FADC (4618 and 5000 series),

Can be interconnected with Kidde alarms of models:

• AC Smoke Alarms: i12020, i12040, i12060, i12080
• Obsolete AC Smoke Alarms: 1235, 1275, 1276, 1285
• Photoelectric AC Smoke Alarm: PE120
• Dual-Sensor AC Smoke Alarm: PI2000
• Silhouette smoke alarm: KN-SMFM-I (part number 21007288)
• Wireless smoke alarm: RF-SM-AC/DC (part number 1279-9999)
• Combination smoke/CO alarm: KN-COSM-IB / 900-0114
• CO alarm: KN-COB-IC / 900-0120
• CO alarm: KN-COP-IC / 900-0121

Any questions regarding either the interconnection or testing of Kidde/Firex systems can be directed to me, and I will be happy to answer them.

Regards,
John McGonigle
8115 US RTE 42N

Plain City OH 43064

614-873-9523

john.mcgonigle@invensyscontrols.com