{"id":3392,"date":"2026-09-29T05:43:47","date_gmt":"2026-09-29T05:43:47","guid":{"rendered":"https:\/\/shop.autoboss.com\/?post_type=product&p=3392"},"modified":"2026-10-09T09:18:51","modified_gmt":"2026-10-09T09:18:51","slug":"cmtool-p50-multifunctional-vehicle-voltage-tester-12v","status":"publish","type":"product","link":"https:\/\/autoboss.com\/de\/product\/cmtool-p50-multifunctional-vehicle-voltage-tester-12v\/","title":{"rendered":"CMTOOL P50 12V Automotive Circuit Tester with Fuse & Hall Sensor Testing"},"content":{"rendered":"
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Trace 12V Circuit Faults with a Display-Equipped Test Pen<\/h3>\n

The CMTOOL P50 is a probe-style circuit tester for 12V vehicle systems. It shows live voltage, identifies polarity and helps check fuses, batteries, sensors and wiring faults.<\/p>\n

    \n
  • 12V Systems<\/li>\n
  • Digital Voltage Readout<\/li>\n
  • 3 Working Modes<\/li>\n
  • 5W Replaceable Bulb<\/li>\n
  • Hall Sensor Testing<\/li>\n<\/ul>\n<\/header>\n
    \n

    Hauptmerkmale<\/h4>\n
      \n
    1. \n
      Live Voltage and Polarity<\/h5>\n

      A digital display on the pen body shows voltage in real time and indicates whether the probed point is positive or negative.<\/p>\n<\/li>\n

    2. \n
      Three Working Modes<\/h5>\n

      Press the button on the body to cycle between display and bulb together, display only, or bulb only.<\/p>\n<\/li>\n

    3. \n
      Fuse, Battery and Short-Circuit Checks<\/h5>\n

      Check fuses, battery performance and short-circuit faults, and help tell solid power from virtual power, series connections and poor grounds.<\/p>\n<\/li>\n

    4. \n
      Sensor and Network Circuits<\/h5>\n

      Test Hall sensor performance and LAN circuits, and probe idle, ignition, fuel injection, vehicle speed sensor and ABS circuits.<\/p>\n<\/li>\n

    5. \n
      Signal Frequency Estimate<\/h5>\n

      On pulsing signals such as fuel injector, spark plug and crankshaft sensor circuits, display bars give a rough indication of the signal’s frequency range.<\/p>\n<\/li>\n

    6. \n
      Built-In Light<\/h5>\n

      The replaceable bulb at the end of the pen doubles as a torch for dark engine bays.<\/p>\n<\/li>\n

    7. \n
      Probe and Clip Lead<\/h5>\n

      A pointed steel probe tip on the pen, plus a lead fitted with an alligator clip and a second probe.<\/p>\n<\/li>\n<\/ol>\n<\/section>\n

      \n

      Good to Know<\/h4>\n
      \n
      \n
      Caution<\/span><\/h5>\n
        \n
      • Designed for 12V vehicle electrical systems. Do not use it on household mains power.<\/li>\n
      • Avoid probing airbag\/SRS circuits and sensitive module signal lines with a powered tester; check the vehicle’s service information first.<\/li>\n<\/ul>\n<\/div>\n
        \n
        Care<\/span><\/h5>\n
          \n
        • Attach the clip to a known-good ground or battery terminal before probing.<\/li>\n
        • Replace the bulb with one of the same rating and keep the probe tip clean.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

          Trace 12V Circuit Faults with a Display-Equipped Test Pen The CMTOOL P50 is a probe-style circuit tester for 12V vehicle systems. It shows live voltage, identifies polarity and helps check fuses, batteries, sensors and wiring faults. 12V Systems Digital Voltage Readout 3 Working Modes 5W Replaceable Bulb Hall Sensor Testing Key Features Live Voltage and […]<\/p>\n","protected":false},"featured_media":12288,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[131],"product_cat":[62,51],"product_tag":[],"class_list":["post-3392","product","type-product","status-publish","has-post-thumbnail","product_brand-cmtool","product_cat-best-selling-products","product_cat-automotive-electronic-circuit-inspection","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product\/3392","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/comments?post=3392"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/media\/12288"}],"wp:attachment":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/media?parent=3392"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_brand?post=3392"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_cat?post=3392"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_tag?post=3392"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}