The CS-1729 was adopted to give the alarm industry more flexibility. Unlike the CS-1429 that comes only as an OPEN CIRCUIT, the CS-1729 comes with a FORM 'C' relay. That means it can be either an OPEN and /or CLOSED CIRCUIT and, in some cases, the installer can use both. And, because of this choice, the CS-1729 can replace almost any warning device presently used today.
Three wire lead
Zip-tie / mount