The NOHMI BOSAI VDCW501-D is a marine-grade flame detector designed for fire safety systems on ships. Powered by 20V DC with a 100mA current draw, it detects flame presence in engine rooms, cargo holds, and other marine spaces, triggering alarms to the compatible VAPW501 control panel. Featuring adjustable sensitivity (Normal/Low) and a robust marine-rated design, this detector ensures reliable fire detection in harsh maritime environments, complying with international marine safety standards.