North America
TAKEX America Inc.

151 San Zeno Way, Sunnyvale
CA 94086, USA

(877) 371-2727
Latest news
ATX West 2019
We will be exhibiting at ATX West, Booth 4389 February 5-7, 2019 - Anaheim Convention Center, CA. ATX West is North America's biggest annual automati ...more
Automate 2019
TAKEX America, Inc. will be exhibiting at Automate, April 8-11 2019 at McCormick Place, Chicago IL - booth #8649. Automation is helping companies in ...more
(877) 371-2727
TAKEX America Inc.
151 San Zeno Way, Sunnyvale CA 94086, USA
Flame Sensors / FS-3500E



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.


  • up to 10m (33ft) UV detection
  • pre-recorded flame prohibition and non-smoking messages in 5 languages
  • Long/short message selectable
  • detachable base unit with snap-in/out sensor design for easy installation
  • battery (2x type-AA alkaline supplied) or 10-30VDC operation



  • Specifications
  • Downloads

Model FS-3500E
Detection system Ultraviolet rays detection (185~260nm)
Detection distance 10m (33ft) max. (7cm flame)
Detection angle 120 degrees (conically)
Detection sensitivity
Detection Sensitivity: 2 levels - H (100%), L (50%)
Detection Timer: 4 steps (1s, 3s, 6s, 15s)
Power supply Type-AA alkaline battery (LR6) 2pcs / DC3V - included
External wiring 10-30VDC (Polarized)
Battery life
Type-AA alkaline battery: Approx. 2 years (stand-by)
(Note: above figure is for reference only and not guaranteed)
Power consumption
(External DC power)
Standby: 40mA or less
Alarm: 300mA or less
Signal output
Relay contact output NO/NC selectable
Detection time plus 2 sec.
Output DC30V 0.1A
Indication: RED
Alarm: Flash during message output
low battery: flash 0.1sec every 5sec

• 5 languages

ENGLISH: "This is a non-smoking area. Please refrain from smoking in this area."
SPANISH: "Prohibido fumar. Abstengase de fumar en el servicio."

Flame prohibition
ENGLISH: "Open flame is prohibited. Please refrain from using open flame in this area."
SPANISH: "Prohibido encender fuego. No se permite el uso de productos inflamables en el servicio."

Buzzer sound

• Long/short message selectable
• Message repeat: once/twice selectable
• Volume: Mute - Max 80dB (1m from the sensor)

Relay contact output NC is issued when the sensor is detached from the base unit
Output AC/DC30V 0.1A
Wiring By terminals
Ambient temperature -10°C to +60°C (+14°F to +140°F) without condensation
(battery performance may decrease below 0°C and above 40°C)
Installation Indoor
Functions Tamper signal, Low battery indication
Appearance ABS resin (white)

Instruction Manual