Sealed retard mechanism (Model WFDT) assures that the retard is not contaminated by dust and dirt when the cover is removed Visual Switch Activation (Model WFDT) permits installer to accurately set the retard even under extremely noisy conditions 100% Synchronization activates both alarm panel and local bell simultaneously Accommodates up to 12 AWG wire

Twelve different flexible plastic paddles fit 1″, 11⁄4″, 11⁄2″ and 2″ tees. Sizes are marked clearly on the paddle for ease of installation. plastic paddles slip over the actuating lever and are securely fastened with one screw. Thehandy depth gauge insures the proper installation depth and clearance of thedetector to the tee.

Static Pressure Rating 250 PSI Triggering Threshold Bandwidth (Flow Rate) 4 – 10 GPM Maximum Surge 18 FPS Compatible Tee Fittings Threaded ferrous and brass tees, copper sweat tees, CPVC tees, and polybutylene tees Contact Ratings Two sets of SPDT (Form C) 10.0 A @ 125/250 VAC 2.5 A @ 24 VDC Overall Dimensions, Installed WFDT: 4.5″ H x 3.75″ W x 6.7″ L (11.4cm H x 9.5cm W x 17cm L) WFDTNR: 3.75″ H x 3.25″ W x 4.25″ L (9.5cm H x 8.2cm x W x 10.8cm L) Conduit Entrances 2 openings for 1⁄2″ conduit Operating Temperature Range 32°F – 120°F (0°C – 49°C) Cover Tamper Switch UL Models: optional P/N 546-7000 ULC/Canadian Models: factory installed Enclosure UL Indoor/Outdoor Rated Shipping Weight WFDT: 2.6 lbs. (1.2 kg.) WFDTNR: 1.5 lbs. (0.7 kg.) Service Use Automatic Sprinkler: NFPA 13 One or Two Family Dwelling: NFPA 13D Residential Occupancies up to 4 Stories: NFPA 13R National Fire Alarm Code: NFPA 72 Warranty 3 years U.S. Patent Nos. 3,845,259; 4,782,333; 5,213,205