{"product_id":"zmpt101b-0-250v-ac-voltage-sensor-module","title":"ZMPT101B 0-250V AC Voltage Sensor Module","description":"\u003ch1\u003eZMPT101B Single Phase AC Voltage Sensor Module – 0-250V Range\u003c\/h1\u003e\u003cp\u003eThe ZMPT101B is a high-precision single-phase AC voltage sensor module capable of measuring AC voltages from 0 to 250V RMS. Based on a miniature potential transformer, it provides galvanic isolation between the high-voltage AC side and the low-voltage measurement circuit, ensuring safety and noise immunity. The module outputs a corresponding 0–5V AC analog signal, which can be read by any microcontroller with an ADC. It’s ideal for building energy monitors, overvoltage protection systems, and IoT-based power logging applications.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e0–250V AC (RMS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e0–5V AC (adjustable via trimmer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNon-linearity\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e2000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e49.5mm × 19.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/esp32-energy-monitor-dashboard-kit-iot-power-meter-with-live-web-charts\"\u003eSmart home energy monitor with Arduino and WiFi dashboard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eOvervoltage\/undervoltage protection relay for appliances\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-sd-card-data-logger\"\u003eMains power quality data logger with SD card\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eAutomatic voltage regulator with real-time feedback control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eWorks with any microcontroller having an analog input: Arduino Uno\/Nano (5V logic), ESP32\/ESP8266 (3.3V logic with output scaling), Raspberry Pi (via external ADC), STM32, and more. The onboard potentiometer lets you calibrate the output amplitude to match the microcontroller’s ADC range. For 3.3V systems, simply adjust the trimmer until the maximum expected AC voltage corresponds to ~3.3V peak output.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 5V DC, GND to ground, and OUT to the microcontroller’s analog pin. The AC voltage to be measured connects to the sensor’s high-voltage terminals – no direct connection to the low-voltage side is required due to transformer isolation. Exercise caution when wiring mains voltage; ensure all connections are insulated and the board is mounted securely away from touchable areas.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, simply connect VCC to 5V, GND to GND, and OUT to an analog pin (e.g., A0). Use analogRead() to sample the instantaneous AC waveform, then calculate RMS values in software. Calibration may be needed using the onboard potentiometer.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I measure three-phase AC voltage?\u003c\/summary\u003e\u003cp\u003eThis module is single-phase. For three-phase systems, use three separate ZMPT101B modules, one per phase, with each isolated appropriately. Ensure all three share a common ground on the DC side if your microcontroller uses a single ADC.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it require calibration?\u003c\/summary\u003e\u003cp\u003eThe output amplitude is adjustable via the trimmer. Before final use, apply a known reference voltage (e.g., 230V AC) and adjust the potentiometer until the output swing matches your ADC’s input range for accurate RMS conversion.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444956782957,"sku":"CDN-0278","price":110.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_eb7ffdb0-867d-4cde-bd7c-cf3e4d83dde9.jpg?v=1781512388","url":"https:\/\/compoden.com\/products\/zmpt101b-0-250v-ac-voltage-sensor-module","provider":"Compoden","version":"1.0","type":"link"}