{"product_id":"raindrops-detection-sensor-module-for-arduino","title":"Raindrop Detection Sensor Module MH‑RD 3.3–5V for Arduino","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThe MH‑RD Raindrop Detection Sensor Module is a simple rain and water‑drop detector consisting of a nickel‑plated FR‑04 rain board and an LM393 comparator control board. It provides both digital (DO) and analog (AO) outputs, making it ideal for weather monitoring, smart irrigation, and DIY Arduino or Raspberry Pi projects.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\" rel=\"nofollow noopener\" data-state=\"closed\"\u003e\u003ca rel=\"noopener\" class=\"inline\" href=\"https:\/\/www.oceanlabz.in\/interface-rain-drop-sensor-with-arduino\/\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003eKey features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLarge 54 × 40 mm rain board made from double‑sided FR‑04 with nickel‑plated surface for excellent conductivity, oxidation resistance, and long service life.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\" rel=\"nofollow noopener\" data-state=\"closed\"\u003e\u003ca rel=\"noopener\" class=\"inline\" href=\"https:\/\/kitsguru.com\/products\/raindrops-detection-sensor-module\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eSeparate 31 × 14.2 mm control PCB with LM393 wide‑voltage comparator, power\/output LEDs, and sensitivity adjustment potentiometer.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\" rel=\"nofollow noopener\" data-state=\"closed\"\u003e\u003ca rel=\"noopener\" class=\"inline\" href=\"https:\/\/easyelecmodule.com\/a-step-by-step-raindrop-sensor-project-with-real-time-monitoring\/\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOperating voltage 3.3–5 V DC with strong output drive capability over 15 mA, compatible with most 3.3 V and 5 V microcontrollers.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\" rel=\"nofollow noopener\" data-state=\"closed\"\u003e\u003ca rel=\"noopener\" class=\"inline\" href=\"https:\/\/www.faranux.com\/product\/raindrops-detection-sensor-module\/\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDual outputs: digital DO for simple rain\/no‑rain detection and analog AO voltage proportional to the amount of water on the sensor surface.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\" rel=\"nofollow noopener\" data-state=\"closed\"\u003e\u003ca rel=\"noopener\" class=\"inline\" href=\"https:\/\/www.studiopieters.nl\/mh-rd\/\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eMounting holes on the rain board and control board for easy installation in weatherproof enclosures or project boxes.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\" rel=\"nofollow noopener\" data-state=\"closed\"\u003e\u003ca rel=\"noopener\" class=\"inline\" href=\"https:\/\/kitsguru.com\/products\/raindrops-detection-sensor-module\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003eSpecifications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eRain board size: approx. 54 mm (L) × 40 mm (W).\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\" rel=\"nofollow noopener\" data-state=\"closed\"\u003e\u003ca rel=\"noopener\" class=\"inline\" href=\"https:\/\/robocraze.com\/products\/rain-drop-sensor-module\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eControl board size: approx. 31 mm (L) × 14.2 mm (W).\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\" rel=\"nofollow noopener\" data-state=\"closed\"\u003e\u003ca rel=\"noopener\" class=\"inline\" href=\"https:\/\/shop.linkserve.mv\/products\/raindrop-detection-sensor-module-3-3v-5v-mh-rd\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eWorking voltage: DC 3.3–5 V.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOutputs: DO (TTL digital switch output), AO (analog voltage output).\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eComparator IC: LM393 wide‑voltage comparator.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOutput current: \u0026gt; 15 mA.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003ePinout and wiring\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eVCC: Connect to 3.3–5 V power supply.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eGND: Connect to power ground.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDO: TTL digital output, HIGH when dry and LOW when rain is detected (threshold set via potentiometer).\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eAO: Analog output, connect to MCU ADC pin to measure rainfall intensity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003ePackage includes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e1 × Raindrop sensor board (54 × 40 mm).\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e1 × MH‑RD control module PCB (31 × 14.2 mm).\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e1 × 2‑pin Dupont cable set for connection.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sun Cheong Computer Company Limited","offers":[{"title":"Default Title","offer_id":42866277187735,"sku":"","price":63.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0440\/4022\/4919\/products\/raindrop-sensor-module-kit.jpg?v=1764319514","url":"https:\/\/scccltd.com\/en-tw\/products\/raindrops-detection-sensor-module-for-arduino","provider":"Sun Cheong Computer Company Limited","version":"1.0","type":"link"}