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Aqualarm 212 Engine Overheat Detector Sending Unit

  • Closes when Temperatures Exceeds 200° F, Reopens at 150 °
  • Applications: 20210 Monitor Panel (Sold Separately) Activates Buzzer and Light
  • Multi-Volt Switch Works with 12 Volt, 24 Volt, and 32 Volt DC
  • Item #: 
    Model #: 


    Shipping Weight: 
    0.10 Lbs.
    List Price: 
    Our Price:
    Status:    null In Stock

    Quantity : 



    • Aqualarm 212 Engine Overheat Detector is a two terminal, non polarity, normally open detector
      • Normally open (N/O) switch that sends an alarm signal by closing on excessive temperature
      • Closes on rising temperatures exceeding 200° F
    • The detector will automatically reset upon cooling off to approximately 150° F
    • Multi voltage switch that can work with 12 volt, 24 volt, and 32 volt DC
    • Activates a loud panel mounted buzzer and red light (20210 Monitor Panel Sold Separately)
    • This detector will alarm before serious engine damage occurs
    • Installation: Detector bolts to engine block or head bolt
    • Ideal for metric standard engines*

    * Note: Ideal for metric applications that can not use the 20118 (212A) Engine Overheat Detector because it is 1/2" MPT.


    Aqualarm Smart Bilge Pump Monitor
    Item #: 501531
  • 3-Position Rocker Switch (Automatic / Off / Manual) with Pump Counter
  • Nominal Voltage: 12 Volt DC
  • Built-in Bilge Pump Counter Electronically Counts Number of Pump Cycles
  •  Include
    Model #:
    Aqualarm Smart High Water Level Bilge Pump Alarm
    Item #: 501532
  • 3-Position Rocker Switch (Automatic / Off / Manual) with Audible Alarm
  • Nominal Voltage: 12 Volt DC
  • Activates Red Light and Alarm if Pump Runs Longer than (2) Minutes
  •  Include
    Model #:
    Aqualarm Bilge Supervisor
    Item #: 501534
  • Control Panel with 208A Bilge Water Level Detector, Audible & Visual Alarms
  • Nominal Voltage: 12 Volt DC
  • Alarms Sounds if Supervised Circuit Detects Broken or Corroded Wiring
  •  Include
    Model #:

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