---
product_id: 179809907
title: "5MM LDR Sensor Module Light Resistor Sensor Module Light Detection LM393 3 pins for Arduino (10PCS)"
brand: "songhe"
price: "€ 0.18"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.ie/products/179809907-5mm-ldr-sensor-module-light-resistor-sensor-module-light-detection
store_origin: IE
region: Ireland
---

# 5MM LDR Sensor Module Light Resistor Sensor Module Light Detection LM393 3 pins for Arduino (10PCS)

**Brand:** songhe
**Price:** € 0.18
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 5MM LDR Sensor Module Light Resistor Sensor Module Light Detection LM393 3 pins for Arduino (10PCS) by songhe
- **How much does it cost?** € 0.18 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/179809907-5mm-ldr-sensor-module-light-resistor-sensor-module-light-detection)

## Best For

- songhe enthusiasts

## Why This Product

- Trusted songhe brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description



## Images

![5MM LDR Sensor Module Light Resistor Sensor Module Light Detection LM393 3 pins for Arduino (10PCS) - Image 1](https://m.media-amazon.com/images/I/6108Stk2qoL.jpg)
![5MM LDR Sensor Module Light Resistor Sensor Module Light Detection LM393 3 pins for Arduino (10PCS) - Image 2](https://m.media-amazon.com/images/I/31hYDVr-HpL.jpg)
![5MM LDR Sensor Module Light Resistor Sensor Module Light Detection LM393 3 pins for Arduino (10PCS) - Image 3](https://m.media-amazon.com/images/I/51BU2BKUUQL.jpg)
![5MM LDR Sensor Module Light Resistor Sensor Module Light Detection LM393 3 pins for Arduino (10PCS) - Image 4](https://m.media-amazon.com/images/I/51h1iD2dZXL.jpg)
![5MM LDR Sensor Module Light Resistor Sensor Module Light Detection LM393 3 pins for Arduino (10PCS) - Image 5](https://m.media-amazon.com/images/I/31xBXWqX-zL.jpg)

## Questions & Answers

**Q: I'm want to activate the start/stop feature on a stopwatch. Can I connect the watch directly to the output?**
A: This is only the output of high and low level signals, how to use the specific have to play their own circuit Oh

**Q: Are these rated 3.3-5V input?**
A: yes,3.3V-5V

**Q: Just a little confused:  Does DO output high (turn on) with Increase in ambient light (bright) or Decrease (dark)?**
A: Adjust the potentiometer to make the DO indicator light just until the moment of extinction.            
When no dark light is detected, the DO pin outputs a low level and the DO indicator lights up.
When darkness is detected, the DO indicator goes out and outputs a high level.  
(High and low level 0,1 can be used). 0: ambient light. 1: ambient darkness

**Q: what is the certainty/error of the sensor readings?**
A: This is not detailed, it is recommended to read the specifications of the photoresistor. This one uses the GL5516 photoresistor

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Photo Sensors
  

*by G***P on Reviewed in the United States on October 17, 2023*

Product received as described.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works well
  

*by J***S on Reviewed in the United States on August 5, 2023*

Used for an emoji planter and seems to detect light well. Been in constant use for over two months and still going strong.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    DO Output is LOW Upon Light Increase!
  

*by J***. on Reviewed in the United States on August 24, 2023*

The component is actually a neat little device.  I had to return them since they operate opposite the way I was led to believe.There is an onboard power LED and an onboard DO LED.  When power is applied the power LED illuminates.  When the photoresistor is subjected to sufficient light the DO LED illuminates.  At this point the DO output pin is 0.  When light sources are hidden from the photoresistor the DO LED extinguishes and the DO output goes to Vcc voltage level - albeit at limited current availability but enough to barely light an external LED connected between DO and GND.I needed it to function opposite this.Correction:I played with it a little more and figured out that the device to be operated (in my case a small piezo buzzer) needed to have the negative terminal on DO and its source (+) on Vcc.  DO acted like "ground" or "negative pole" switch. When connected in this fashion, it operated the way I had intended.  Trouble is the buzzer output volume/loudness was significantly diminished - but it worked like a charm.  Not sure if that is how it is supposed to be connected but it worked well.I changed my rating to 4 stars because I did manage to get it to work.Power source (Vcc):  Three LR-44 button cells in series producing 4.35VDC.Device operated:  Active 5VDC Piezo buzzer drawing ~17mA at 4.35V.

---

## 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.ie/products/179809907-5mm-ldr-sensor-module-light-resistor-sensor-module-light-detection](https://www.desertcart.ie/products/179809907-5mm-ldr-sensor-module-light-resistor-sensor-module-light-detection)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-01-26*