UV Sensors


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.

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Model Detection system Coverage Supply voltage Current consumption  
FS-3500E Ultraviolet 10m / 33ft AA (LR6) / 10 - 30V DC 300mA


High sensitivity ultraviolet flame sensor
Detachable base unit with snap-in-out sensor design
Pre-recorded flame prohibition and non-smoking messages
Long and short message options
5 languages; English, Spanish, Japanese, Chinese, Korean
80dB/1m (max)



Adjustable Wall/Ceiling Mount Bracket