--- product_id: 171885566 title: "CQRobot Contact Photoelectric Liquid Level Sensor for Arduino Raspberry Pi" brand: "cqrobot" price: "₩40187" currency: KRW in_stock: true category: "Cq Robot" url: https://www.desertcart.kr/products/171885566-cqrobot-contact-photoelectric-liquid-level-sensor-for-arduino-raspberry-pi store_origin: KR region: South Korea --- # Ultra-low 12mA power draw ±0.5mm precision sensing Withstands up to 105°C CQRobot Contact Photoelectric Liquid Level Sensor for Arduino Raspberry Pi **Brand:** cqrobot **Price:** ₩40187 **Availability:** ✅ In Stock ## Summary > 💧 Level up your smart projects with pinpoint liquid sensing! ## Quick Answers - **What is this?** CQRobot Contact Photoelectric Liquid Level Sensor for Arduino Raspberry Pi by cqrobot - **How much does it cost?** ₩40187 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/171885566-cqrobot-contact-photoelectric-liquid-level-sensor-for-arduino-raspberry-pi) ## Best For - cqrobot enthusiasts ## Why This Product - Trusted cqrobot brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Mounting:** Install it up, down, sideways, or diagonally—flexible to fit any setup. - • **Smart Voltage Control:** DIP switch toggles output between 3.3V and 5V for seamless Arduino & Raspberry Pi integration. - • **Energy-Efficient & Silent:** Consumes just 12mA with no mechanical parts—quiet, reliable, and maintenance-free. - • **Precision Liquid Detection:** Detects water levels with ±0.5mm accuracy for flawless automation. - • **Durable & Chemical-Resistant:** Silicone PC build resists corrosion, high pressure, and extreme temperatures up to 105°C. ## Overview The CQRobot Contact Photoelectric Liquid Level Sensor offers high-precision (±0.5mm) liquid detection using optical technology, compatible with Arduino and Raspberry Pi. Its compact, corrosion-resistant design supports multiple mounting orientations and operates efficiently at just 12mA power consumption. With adjustable output voltage and resistance to temperatures up to 105°C, it’s ideal for automated irrigation, aquariums, and industrial liquid monitoring. ## Description CQRobot Contact Photoelectric Liquid Level Sensor for Arduino Raspberry Pi | Detect Liquid by Probe Contact, for Automatic Irrigation Systems, Aquariums, Plants, The Garden, Agriculture. : desertcart.co.uk: Business, Industry & Science ## Features - Contact Water/Liquid Level Sensor, This is a photoelectric water liquid level sensor that is operates using optical principles. Open collector output mode, suitable for connecting various circuits and product applications. - The sensor has no mechanical parts, requires no additional adjustment, and has high sensitivity, low power consumption, corrosion resistance, high pressure resistance, high temperature resistance and chemical stability. - This sensor probe is small in size and has a structure that can be placed up, down, laterally, and diagonally in multiple orientations to detect solution spillage, dryness and horizontal level. Can be used as a reminder and alarm function. - The sensor has a DIP switch. The DIP switch controls the output voltage (high level) of the signal terminal (green line). When the DIP switch is dialed to 5V, the high level is 5V. When the DIP switch is dialed At 3V, the high level is 3.3V. - Compatible with Arduino motherboard and Raspberry Pi motherboard. for Automatic Irrigation Systems, Aquariums, Plants, in The Garden, in Agriculture etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07ZMGW3QJ | | Best Sellers Rank | 37,537 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 36 in Liquid Level Sensors | | Brand | CQRobot | | Country Of Origin | China | | Current Rating | 12 Milliamps | | Customer Reviews | 4.4 4.4 out of 5 stars (100) | | Item Dimensions | 21 x 3.6 x 7.1 centimetres | | Item Weight | 0.05 Kilograms | | Manufacturer | CQRobot | | Manufacturer Part Number | CQRSENYW002 | | Material | silicone pc | | Maximum Supply Voltage | 5 Volts (DC) | | Measurement Accuracy | ±0.5mm | | Model Number | CQRSENYW002 | | Mounting Type | Wall Mount | | Output Type | Digital | | Sensing Distance | 50 Centimetres | | Specific Uses For Product | Automatic Irrigation Systems, Aquariums, Plants, Garden, Agriculture, Alarm Function | | Style Name | Single Point Contact Type | | Upper Temperature Rating | 105 Degrees Celsius | ## Product Details - **Brand:** CQRobot - **Item dimensions L x W x H:** 21 x 3.6 x 7.1 centimetres - **Item weight:** 0.05 Kilograms - **Material:** silicone pc - **Style:** Single Point Contact Type ## Images ![CQRobot Contact Photoelectric Liquid Level Sensor for Arduino Raspberry Pi - Image 1](https://m.media-amazon.com/images/I/41LW6NByXcL.jpg) ![CQRobot Contact Photoelectric Liquid Level Sensor for Arduino Raspberry Pi - Image 2](https://m.media-amazon.com/images/I/51rMK1B7UQL.jpg) ![CQRobot Contact Photoelectric Liquid Level Sensor for Arduino Raspberry Pi - Image 3](https://m.media-amazon.com/images/I/51owmQqPzLL.jpg) ![CQRobot Contact Photoelectric Liquid Level Sensor for Arduino Raspberry Pi - Image 4](https://m.media-amazon.com/images/I/51xbiMZv6BL.jpg) ![CQRobot Contact Photoelectric Liquid Level Sensor for Arduino Raspberry Pi - Image 5](https://m.media-amazon.com/images/I/51zuTHF4R7L.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: can this be mounted to the lid of a bucket and read the water levels inside as they go down? or is this basically a contact switch that detects liquid** A: It's just a liquid contact switch. **Q: Can I purchase just the board with the 3-wire connector somewhere?** A: Sorry, buyers only sell kits. **Q: Is there a Fritzing (or other schematic app) component that I can download for this product?** A: Hello , For specific product descriptions, you can log in to our official link address to view, hope it will be helpful to you, if you have any questions, please contact me in time, thank you! Wiki: http://www.cqrobot.wiki/index.php/Liquid_Level_Sensor **Q: What is vin vs in for the breakout board? which pin varies when in contact with water? i assuming one connects to the 5v and other varies voltage?** A: Hi! It is recommended that you refer to the technical information of this product (Wiki: http://www.cqrobot.wiki/index.php/Contact_Water/Liquid_Level_Sensor_SKU:_CQRSENYW002). If you have any questions, please feel free to contact us! ## Frequently Bought Together - CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in The Garden, in Agriculture etc. - CQRobot TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc. - PH Sensor for Arduino, PH0-14 Value Detect Sensor Module + PH Electrode Probe BNC, PH Sensor UNO, PH Sensor Arduino Kit, PH Sensor Raspberry Pi Kit, by HQ&LP --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/171885566-cqrobot-contact-photoelectric-liquid-level-sensor-for-arduino-raspberry-pi](https://www.desertcart.kr/products/171885566-cqrobot-contact-photoelectric-liquid-level-sensor-for-arduino-raspberry-pi) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-08-25*