... input. conventional combined smoke and heat detectorSD119-4 is a 4 wire multipurpose smoke cum heat detector with UL268 ... -2, SD119-2L, SD119-2H, SD119-2HL, SD119-4-12/24/48, SD119-4H(12V) or SD119-4H ... (57°C) and rate-of-rise (9.4°C/min)4) Advanced detection and discrimination algorithms 5) Easy ... condensation or icingAlarm Contact:NO or NC Operation, Form A: 1.0A@30VDC/0.5A@125VACDimensions:100mm (dia) ...