What is an LDR Resistor Board used for?

An LDR Resistor Board is used to demonstrate how a light dependent resistor changes resistance when light intensity changes.

LDR means light dependent resistor. It is also called a photoresistor because its resistance changes with light exposure.

What is the resistance range of this LDR?

The dark resistance and light resistance values varies by unit — check the resistance range from the product datasheet or supplier before ordering.

Can it be used for voltage-divider experiments?

Yes. An LDR can be used in a voltage-divider circuit to show how light intensity changes output voltage.

Does it require a power supply?

The power requirement depends on the experiment circuit. Use only the confirmed safe low-voltage supply for the final product configuration.

Is it suitable for school electronics labs?

Yes. It is suitable for supervised school and college electronics practicals on light sensors, resistance change, and basic automation circuits.

Home » Our Product » Physics Lab Equipment » Electronic Instruments » LDR Resistor Board

LDR Resistor Board

Product Code : SCL-EI-10661

The LDR Resistor Board from Lab Glassware Manufacturer, a scientific and educational equipment manufacturer based in Ambala, Haryana, India, since 1982, is an electronics laboratory component used for demonstrating how resistance changes with light intensity in school physics and sensor-circuit experiments. It is supplied to schools, colleges, and institutional buyers across India and exported to countries including Bangladesh, Nepal, Sri Lanka, and Bhutan, with growing demand across the wider South Asia region for hands-on electronics and sensor-teaching equipment.

Quick answer: The LDR Resistor Board uses a light dependent resistor (photoresistor) that changes resistance under different light levels, letting students build voltage-divider circuits, night-lamp automation demonstrations, and light-sensor experiments. The exact resistance range, voltage rating, and response time vary by model — check the specific listing before ordering.

Technical Specifications

Specification	Detail
Product Name	LDR Resistor Board
Brand	Lab Glassware Manufacturer
Product Category	Physics Lab Equipment / Electronic Instruments / Electrical Circuit Apparatus
Component Type	Light dependent resistor / photoresistor
Resistance Range (Dark/Light) & Response Time	. Sensor-circuit learning for lessons on light sensors, voltage dividers, switching circuits, and automation. Educational board/base format for bench-top and trainer-board experiments. Low-voltage circuit use for school and college electronics practicals with safe power supplies. Hands-on STEM value for experiments on photoresistors, night-lamp circuits, and light-triggered devices. Specification-dependent performance — resistance range, voltage limit, and response time are confirmed at order stage. What Is Included LDR Resistor Board/Base with terminals and connecting leads. A resistor network, activity sheet, storage box, or certificate may be included depending on the configuration ordered — confirm exact contents with Lab Glassware Manufacturer before ordering. Applications / Uses Demonstrating change in resistance with light intensity Building voltage-divider circuits using an LDR Studying photoresistance and light sensor behaviour Creating simple automatic night-lamp or light-triggered circuits Using with meters to compare resistance in light and darkness Supporting STEM, physics, and electronics trainer-board experiments How to Use the LDR Resistor Board Confirm the voltage rating, terminal layout, and circuit diagram before use. Place the board on a dry, stable laboratory bench. Connect the LDR board into a low-voltage circuit as shown in the experiment method. Use a meter to measure resistance or voltage output in normal room light. Cover the LDR to reduce light and observe the change in reading. Shine a lamp or torch on the LDR and compare the new reading. Record resistance or voltage values at different light levels. Switch off the power supply before changing connections. Safety note: Use only with safe low-voltage supplies unless the product is specifically rated otherwise. Do not overload the LDR, connect it to mains electricity, expose it to excessive heat, or short circuit the power supply. Care & Maintenance Store the LDR board dry and protected from dust, heat, and impact. Keep the sensor face clean for repeatable classroom readings. Do not scratch, press, or bend the LDR component. Remove from use if the board overheats, terminals loosen, or readings become unstable. Part of a Sensor and Circuit-Building Range The LDR Resistor Board pairs naturally with other basic circuit components from Lab Glassware Manufacturer. Combine it with the Red LED with Series Resistor to build a simple light-triggered indicator circuit, the Resistors for Breadboard for voltage-divider experiments, and the 2 A Current Meter Board to measure the resulting current change under different light levels. Why Choose Lab Glassware Manufacturer Lab Glassware Manufacturer manufactures and exports laboratory glassware, scientific laboratory instruments, lab experiment setups, science kits, mathematics kits, didactic models, and STEM models. Its product range supports physics lab equipment, electronic instruments, electronics lab trainers, general lab equipment, and educational laboratory procurement. The brand supplies schools, colleges, universities, research institutions, industrial laboratories, distributors, and export buyers across India and international markets including Bangladesh, Nepal, Sri Lanka, and Bhutan. Frequently Asked Questions What is an LDR Resistor Board used for? An LDR Resistor Board is used to demonstrate how a light dependent resistor changes resistance when light intensity changes. What does LDR mean? LDR means light dependent resistor. It is also called a photoresistor because its resistance changes with light exposure. What is the resistance range of this LDR? The dark resistance and light resistance values varies by unit — check the resistance range from the product datasheet or supplier before ordering. Can it be used for voltage-divider experiments? Yes. An LDR can be used in a voltage-divider circuit to show how light intensity changes output voltage. Does it require a power supply? The power requirement depends on the experiment circuit. Use only the confirmed safe low-voltage supply for the final product configuration. Is it suitable for school electronics labs? Yes. It is suitable for supervised school and college electronics practicals on light sensors, resistance change, and basic automation circuits. Related Products Red LED with Series Resistor Resistors for Breadboard 2 A Current Meter Board Request a Quote For pricing, bulk institutional orders, or tender submissions, please contact Lab Glassware Manufacturer or visit our lab tender page. Last updated: September 2026