The FS-3500 Flame Sensor immediately detects UV rays contained in flames to trigger a pre-recorded "flame prohibition" or "non-smoking" message output in a choice of 5 languages; English, Spanish, Japanese, Chinese and Korean.
The sensor can be powered from two type-AA alkaline batteries (supplied) or hardwired (10-30VDC), and features a detachable base unit with a snap-in/out design for easy installation.