{"product_id":"3in1-frequency-meter-5hz-100mhz-frequency-test-pen-frequency-counter-frequency-signal-generator-measurement-voltmeter","title":"Pen Frequency Counter with Voltage and PWM Functions","description":"\u003cp\u003eCheck a project signal and try a pulse source from the same compact instrument. This pen-style counter combines frequency measurement, PWM generation and low-voltage DC measurement for electronics work.\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eCompare a signal with the frequency your project expects\u003c\/strong\u003e - The counter displays the measured frequency within its stated range.\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eTry a different test pulse without a separate generator\u003c\/strong\u003e - The built-in output offers adjustable frequency and PWM duty cycle.\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eCheck a low-voltage supply without reaching for another meter\u003c\/strong\u003e - The 0-5V DC function provides a power-rail reading in the same instrument.\u003c\/p\u003e\u003ch2\u003eBring Measurement and a Test Signal to the Bench\u003c\/h2\u003e\u003cp\u003eFor an oscillator or logic project, frequency tells you how often a signal repeats; it does not show the complete waveform. Use the counter when that frequency reading answers the question you are investigating.\u003c\/p\u003e\u003cp\u003eThe pulse-output function provides a separate role: supplying a configured test signal. Match signal levels, connections and grounding to the circuit before use, following the instrument's limits rather than treating every connection as interchangeable.\u003c\/p\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S4fb7236048e24df89061f5472392608et.jpeg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S86b39ac572184dffab146a6298de3c33x.jpeg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S6cf1fa600cdd4f31a10908a360557206x.jpeg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S7eef31b4218c4b198d754bc72092f3bc8.jpeg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S955bd04c217d46198884be08e861b388p.jpeg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sb947292d99fa458d85ebcb038da905cfw.jpeg\" slate-data-type=\"image\"\u003e\u003ch3\u003eTechnical details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFrequency measurement: 5Hz-100MHz\u003c\/li\u003e\n\u003cli\u003eSignal output: 1Hz-4MHz; adjustable PWM duty cycle\u003c\/li\u003e\n\u003cli\u003eDC measurement: 0-5V\u003c\/li\u003e\n\u003cli\u003eUSB-C 5V power; pen-style display\u003c\/li\u003e\n\u003cli\u003eFor low-voltage electronics; never connect to mains\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eAdd a compact counter and pulse source to your electronics toolkit.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Spy-shop.com","offers":[{"title":"PEN Frequency","offer_id":63963169128778,"sku":"1005011582378634-PEN Frequency","price":52.1,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/5980\/2954\/files\/S07efedb775714acb97eb1673ec7ee1c60.webp?v=1792256845","url":"https:\/\/spy-shop.com\/da\/products\/3in1-frequency-meter-5hz-100mhz-frequency-test-pen-frequency-counter-frequency-signal-generator-measurement-voltmeter","provider":"Spy-shop.com","version":"1.0","type":"link"}