Check the listing for details. SYSTEM SENSOR 2400A DIRECT WIRE PHOTOELECTRIC SMOKE DETECTOR. Condition: New. Listed at 44.31 USD. SYSTEM SENSOR 2400A DIRECT WIRE PHOTOELECTRIC SMOKE DETECTOR *** NEW – NEVER USED *** NOTE: “A” suffix indicates ULC Listed model DESCRIPTION : The System Sensor 2400A photoelectronic detector use state of-the-art, optical sensing chambers. This detector is designed to provide open area protection, and is intended for use with compatible UL-listed 2-wire control panels only. The 2400A detector is listed to UL 268 and is latching type system detector. When latched in alarm, the detector must be reset by a momentary power interruption. An LED on the detector provides a local indication of the detector’s status. This LED blinks every 10 seconds when the detector is receiving power and ready in standby and is latched on continuously in alarm until the detector is reset. SPECIFICATIONS : Brand : System Sensor Model : 2400A Part Number : 2400A Country : Mexico Type : Smoke Detector UPC: 783863000096 Mounting : 3½-inch octagonal back box 4-inch octagonal back box 1 1⁄2-inch deep electrical box 4-inch square back box with a plaster ring Wiring : 2-wire System Voltage: 12/24 VDC Operating Temperature Range : 32°F to 120°F (0°C to 49°C) Operating Humidity Range: 10% to 93% Relative Humidity Non-condensing Maximum Air Velocity: 3000 ft/min (15m/s) Locking Alarm: Reset by momentary power interruption Agency Listing : ULC INCLUDES : 2400A Smoke Detector Mounting Bracket Kit Installation and Maintenance Instruction (English & French) **International Customers** Buyers are responsible for any customs duties, taxes, tariffs or brokerage fees associated with shipping to their respective countries. PLEASE, WATCH CAREFULLY PUBLISHED PHOTOS FOR PRODUCT DESCRIPTION, YOU GET EXACT ITEM THAT YOU SEE. Returns are accepted within 30 days of an order delivery. All returns must have a Return Authorization(RA)