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The PowerChek power supply indicator lets you know if your block heater or any other electrical appliance that needs to be powered is working. PowerChek has two indicator lights, green indicates current is available, and red indicates it is getting to your appliance. Durable, compact, easy-to-use power supply indicator ideal for everything from automotive and transportation applications to more industrial power verification use Use with all 120V circuits. Will test and continuously monitor the operation of sump pumps, generators, compressors, lights, all vehicle block heaters, oil pans, heavy-duty equipment, battery warmers, extension cords, heater tapes, all electric tools, blankets, appliances, and more.


  • Know that your blocker heater or other equipment has failed when you plug it in
  • Works on any electrical load by telling you that critical current is flowing through the circuit
  • Every circuit requires both voltage and current to successfully deliver power, PowerChek lets you determine that you have both. Green indicates voltage is present, red confirms that the current is flowing
  • Highly visible from several feet. Know from the comfort of your home or office that your vehicle is ready to go when you are. Easy to use, Affordable, Portable, Durable
  • Pays for itself the first time you avoid a tow call or a missed day of work. Never be stranded again. PowerChek will give you peace of mind
  • Sectors: Oil / Gas / Energy refineries Military operation facilities Constructions Automotive/transportation Entertainments Health and Safety


  • Size (Inches)
    1.2 x 5.5 x 1.2 inches

    Weight (lbs)
    0.15 lbs


    Maximum AC Current (Amps)

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