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These small but mighty field detectors can detect 13.56mhz signals from card readers, phones, fridges, etc.
 
Pair them up with the repeaters to find the optimal placement to extend your signal.
 
Just move the detector to the place that lights up the brightest and place the repeater in the exact same spot.

13.56mhz Field Detectors (28mm)

Rating is 5.0 out of five stars based on 3 reviews
$5.00Price
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    Reviews

    Rated 5 out of 5 stars.
    Based on 3 reviews
    3 reviews
    • NickluvinApr 15
      Rated 5 out of 5 stars.
      Makes it easy to find where to stick repeaters

      This is the same size as the flexible stick on repeater stickers. It makes it super easy to figure out where to put it. Move it around until the light is the brightest. BAM, that's where your repeater sticker goes. Easy-peasy.

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    • MayhemOct 21
      Rated 5 out of 5 stars.
      Never leaves my pocket

      This field detector has become part of my EDC as I'm currently obsessed with RFID and NFC, it allows me to get a visual incite in to field locations and strengths it also make for a great visual aid in my classroom to help the students understand how these fields work.

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    • JamesAug 09
      Rated 5 out of 5 stars.
      Get this if your planning on using any of the field repeaters

      This solved a problem I didn't even realize I had: not knowing exactly where the NFC antenna is in my phone. Take the guesswork out of placing your field repeaters and get the in the perfect spot for optimal effectiveness every time.

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