What is the dark resistance?

Under a bright halogen lamp they range between 300-500 Ohms, in a poorly lit room (eg light of my monitor and photoresistor not directly illuminated but enough light to see) they range from 1 to 10 M Ohms then increase to 12-15 M Ohms and higher in darker parts of the room. When completely darkened with my meter on the 20M Ohm scale the resistance increases until my meter no longer can provide a value, so > 20MOhm.

Will this work on a 12v 1.3ah battery

It says in the info about it 150 volts is the maximum. I would say 12v should be fine. If not contact the vendor. I use them for Arduino or ESP32 or ATTINY85/13. I need to do more testing with them. I tried using them a few days ago and it didnt work. I need to play with them more to find out what I was doing wrong. These devices only output 5 volts so that could be the issue i am having.

Will these work in a 28 VAC circuit ?

Maximum wattage is 100 mW so 28 Volts (AC or DC) under a bright light would probably destroy them.

will these detect red laser light?

First off this product says it is manufactured by a company called “eboot”. They not an electronics parts manufacturer of any kind. You may want to contact them for the REAL manufacturer’s name and part number so that you can find the devices response to the laser. Your other option is to build a circuit and experiment with your laser perhaps using a LM339 voltage comparator etc

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

EBOOT 30 Pieces Photoresistor Photo Light Sensitive Resistor Light Dependent Resistor 5 mm (5539)

Product ID: 41099661

⚡150V max voltage

🔆5mm precision sensor

🌡️-30°C to 70°C operating range

$12.15

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Description

🔍 Illuminate your projects with precision and power!

SEAMLESS INTEGRATION - Compact 5mm size fits perfectly into any smart sensor or IoT setup
ROBUST VOLTAGE HANDLING - Supports up to 150V DC for versatile project compatibility
PRECISION LIGHT SENSITIVITY - Spectral peak at 540 nm ensures accurate light detection every time
WIDE TEMPERATURE RESILIENCE - Operates flawlessly from -30°C to 70°C, built for real-world conditions
BULK PACK FOR ENDLESS INNOVATION - 30 high-quality photoresistors ready for your next DIY breakthrough

The EBOOT 30 Pieces Photoresistor set features 5mm GM5539 sensors with a spectral peak at 540 nm, supporting up to 150V DC and 100mW power. Designed for durability, they operate reliably between -30°C and 70°C, making them ideal for DIY electronics, IoT devices, and smart lighting projects.

Specifications

Customer Reviews

4.6 out of 5 stars 840 Reviews

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.