ELKRON FIRE 80SD9K00121 FDOT500 Low profile digital optical-thermal detector. complete with self-learning circuit.

FDOT500 Low profile digital optical-thermal detector. complete with self-learning circuit. EN54 certification part 5-7-17 No. 1293-CPD-0341

Low profile optical-thermal detector, complete with self-learning circuit and short-circuit isolator. The combined dual technology detectors (smoke-heat) base their operating principle on the principle of the diffusion of light caused by smoke particles present in the air (TYNDALL effect) and on the control of the temperature within the area in which they are installed. A microcontroller analyzes and compares the signal it receives from a precision NTC-type temperature sensor, activating the alarm if the temperature exceeds 58°C. The detector has the function of automatic gain control; a microcontroller calculates the reading compensation to maintain constant sensitivity over time. Power supply voltage: 20Vcc (modulated voltage from -15% to + 10%) Average absorption at rest: 250 uA@20Vcc Absorption in alarm: 2mA@20Vcc Static alarm threshold: 58° Two-colour LED: red alarm - green normal operation Humidity relative max: 93% Operating temperature: 0 ÷ 50°C Weight: 70 g Dimensions: ø 90 x 40 (H) mm Certified EN 54 part 7, part 5 class A1 and part 17 (1293-CPD-0139)