The SD-651 is designed to meet the performance criteria designated by UL. Its sensing chambers are sealed against back pressure air flow, dirt, and insects.
The L-PWP03A offers unbeatable yet cost-effective performance thanks to its water-proof cone and high-strength/fire-proof ABS enclosure. It is easy to install, CE/RoHS-compliant and compact in design.
FRM-1 Addressable Relay Module provides the system with a dry-contact output for activating a variety of auxiliary devices, such as fans, dampers, control equipment, etc.