Asenware AW-D138C-4W 4-Wire Conventional Smoke and Heat Combined Detector

The AW-D138C-4W is a 4-wire conventional detector that combines optical smoke detection with A2R class heat detection in a single housing. Smoke sensitivity is in the range of 0.18~0.3 dB/m, and the fixed temperature alarm threshold is 57°C; this dual architecture ensures response even in fires where smoke is diluted but temperature rises rapidly. The 9~28 VDC supply range tolerates voltage drop in long line runs, and the 500 mA / 30 VDC relay output drives a siren, damper, or local alarm circuit without additional interface. The dual LED in the housing provides 360-degree visibility, so the alarm status can be read from any direction when looking at the detector from the ceiling. The product under EN 54-5:2017 and EN 54-7:2018 scope is for indoor use only; when selecting the mounting location, the limits of -10 ~ +50°C and 5~95 RH condensation-free must not be exceeded.