1451D

Hex Standoff Threaded #6-32 Brass 0.625" (15.88mm) 5/8"

CHOICE OF: Stainless: ASTM A581/A582 Brass: per ASTM-B16 Aluminum: ASTM B211 Nylon V2: 6/6 UL Rated 94V-2 Phenolic: PBE Grade Natural Plating: Zinc ASTM B633 Plating: Clear Iridite Finish Nylon V0: 6/6 UL Rated 94V-0 Color Phenolic FEMALE THREADED STANDOFFS THREADED STANDOFFS 71 HEX THREAD THREAD L HEX O.D. ROUND Tel (718) 956-8900 ? Fax (718) 956-9040 (800) 221-5510 ? kec@keyelco.com www.keyelco.com 31-07 20th Road – Astoria, NY 11105-2017 RoHS COMPLIANT~ ISO 9001 CERTIFIED ? NOTE: All standoffs over 1.000 (25.4) are tapped .375 (9.5) min. both ends, except 4-40 standoffs which are tapped .250 (6.4) min. .156 (3.9) .187 (4.7) .250 (6.3) .250 (6.3) .250 (6.3) .156 (3.9) .187 (4.7) .250 (6.3) .250 (6.3) .250 (6.3) 2-56 THREAD 4-40 THREAD HEX ROUND HEX NYLON V2 NYLON V0 STAINLESS BRASS ALUMINUM BRASS ALUMINUM PHENOLIC O.D. CAT. NO. CAT. NO. CAT. NO. CAT. NO. CAT. NO. LENGTH CAT. NO. CAT. NO. CAT. NO. — — — 1798A 1797A .187 (4.7) 1802A 1801A — — — — 1798B 1797B .250 (6.4) 1802B 1801B —

Models Available DH400ACDCI Ionization Duct Smoke Detector DH400ACDCA Ionization Detector, ULC Listed DH400ACDCP Photoelectronic Duct Smoke Detector 400 Series ? 4-Wire Duct Smoke Detector ? System Sensor 8/96 This document is not intended to be used for installation purposes. A05-201-02 APPROVED A Division of Pittway 3825 Ohio Avenue, St. Charles, IL 60174 1-800-SENSOR2 (736-7672), Fax 630-377-6495 http://www.systemsensor.com Specifications Length: 14.5 inches (37 cm.) Width: 5 inches (12.7 cm.) Depth: 4 inches (10.2 cm.) Weight: 4.5 lbs. (2.0 kg.) Operating Temperature Range: 32° to 120°F (0° to 49°C) Operating Humidity Range: 10% to 93% relative humidity Air Duct Velocity: 500 to 4000 ft./min. Features ? 24 V AC/DC or 120/220 VAC operation ? Simple change-out of photo or ion detector heads ? Air velocity rating from 500 to 4000 FPM ? Powered outputs for remote LED and sounder ? Remote test station option ? Remote sounder option ? Equipped with a DPDT auxiliary relay (two Form C cont

Temperature range 32° – 158°F (0° – 70°C) Air velocity rating from 500 – 4,000 FPM 24 VAC/DC or 120/220 VAC operation Easy and quick mounting to round or rectangular ducts from 1 ′ – 12 ′ (0.3 – 3.7 meters) wide 3-year warranty Models Available DH400ACDCIHT 4-wire ionization high-temperature duct smoke detector Product Overview duct to provide dependable performance for management of fans, blowers, and air conditioning systems. The twist-in, twist-out 1451DHHT High-Temperature ionization detec- tor head allows easy removal for quick cleaning, mainte- nance, and replacement without removing the duct housing. 400 Series ? High-Temperature Duct Smoke Detector H V A C S y S t e m S m o n i t o r i n g System Sensor DH400ACDCIHT is designed for interior or exterior duct applications where extreme temperatures can exceed standard detector capabilities. (For exterior applications use DH400 OE-1 outdoor enclosure.) The DH400ACDCIHT samples air currents passing through a