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SignalQuest SQ-SEN-390 Tilt Sensor

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 Product Description


The SQ-SEN-390 series sensor acts like a position sensitive switch which is normally closed when below horizontal and normally open when above horizontal. When at rest, it normally settles in a closed state. When in motion, it will produce continuous on/off contact closures. It is sensitive to both tilt (static acceleration) and vibration (dynamic acceleration). The sensor can be easily used to produce a series of CMOS or TTL level logic level or pulse train using a single resistor to limit current. The signal level can be read directly by a digital input. This can be used to interrupt (wake up) a microcontroller or can be counted to estimate the amount and duration of activity. The sensor is fully passive, requires no signal conditioning, and draws as little as 50 nA of continuous current.


  • Non-sensitive to vibration when open
  • On / off tilt sensing
  • Normally open when above horizontal
  • Normally closed when below horizontal


  • Surface mount - RoHS & REACH complaint, lead free, Halogen free
  • Made in USA - fully automated production, 100% testing, worldwide quality and price leader
  • Zero-power normally - < 50 nA when activated
  • Activation angle - 90°
  • Industrial rated - 10 year life, -40 to 85 ºC
  • Miniature size - 3.3 mm x 6.9 mm
  • Simple interface - No signal conditioning required


  • Security, anti-tamper, anti-theft, alarms


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