The Kidde SMK23RU is a Relay Pattress used for operating remote Kidde devices.
The SMK23RU is for use with Kidde Fyrnetics and Firex, hard-wired smoke, heat, and carbon monoxide detectors, where surface cabling is being used, such as retrofit applications.
The SMK23RU can be used with a suitable relay control to enable devices such as door closers, warning lights, horns, and suitable warden-call systems.
Not suitable for 423/9HIR and 423D/9HIR CO alarms.