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يسر شركة Royal Surveillance systems المتخصصة في جميع أنظمة الاتصالات و الأنظمة الأمنية ولديها خبراء متخصصون في تلك الأنظمةCommunication & Security & Control Systems بعرض أحدث حساسات حرارة الحريق عالية الجودةوالتى حققت المعادلة الصعبة والتى يبحث عنها أى عميل أعلى كفاءة بأقل سعر . Specifications: • Specifications are typical at 24V, 23°C and 50% relative humidity unless otherwise stated. • Detector principle: Heat sensitive resistance • Supply wiring: Two-wire supply, polarity insensitive • Terminal functions: L1 & L2 supply in and out connections • +R remote indicator positive connection (internal 2.2kΩ resistance to positive) • –R remote indicator negative connection (internal 2.2kΩ resistance to negative) • Operating voltage: 17–28V DC • Communication protocol: Discovery, XP95 (5-9V peak to peak) • Quiescent current: 350µA • Power-up surge current: 1mA • Maximum power-up time: 10s • Alarm current, LED illuminated: 3.4mA • Remote output characteristics: Connects to positive line through 4.5kΩ (5mA maximum) • Alarm level analogue value: 55 • Alarm indicator: 2 red Light Emitting Diodes (LEDs). Optional remote LED • Temperature range: Minimum operating temperature –40°C ضمان لمدة عام كامل مع الاستبدال للأستعلام أتصل على 034850367 – 01224179788 – 01098836236 Facebook page: https://www.facebook.com/royal.surveillance.system website: http://www.royalsurveillancesystems.com/ For sending messages: sales@royal-surveillance.com Adress: 13 Sero Setries St., Al-Raml station, Alexandria, Egypt