5mm LDR Sensor Photoresistor Photo Cell 20-30K – GL5537-1
5mm LDR Sensor Photoresistor Photo Cell 20-30K – GL5537-1
The 5mm LDR Sensor (GL5537-1) is a photoresistor whose resistance decreases with increasing light intensity. It is ideal for light-sensing applications in electronics projects, from automatic night lamps to light-activated switches.
Specifications
- Type: Photoresistor (Light Dependent Resistor)
- Diameter: 5mm
- Dark Resistance: 20-30K ohms (at 10 Lux)
- Light Resistance: 10-20K ohms (at 100 Lux)
- Response Time: ~30ms
- Operating Temperature: -30°C to +70°C
- Encapsulation: Epoxy resin
- Lead Material: Tin-plated copper
Compatible with
- Arduino (Uno, Nano, Mega)
- ESP32 and ESP8266
- Raspberry Pi (any model)
- STM32 microcontrollers
- 555 timer circuits
- Any 3.3V or 5V logic system
What you can build with it
- Automatic night lamp that turns on when dark
- Light-activated alarm or buzzer circuit
- Solar tracker or light intensity meter
Built and Backed by Compoden
Compoden has supplied electronics components to makers, schools, and engineering colleges across India for over 10 years. Every GL5537-1 LDR comes with access to our AI build companion — delivered via QR code, email, or WhatsApp — that helps you wire and program this sensor into a working project. Pay your way: UPI, cards, or Cash on Delivery, anywhere in India.
What is the difference between dark resistance and light resistance?
Dark resistance is the resistance measured when the LDR is in complete darkness (typically 20-30K ohms for this model). Light resistance is the resistance when exposed to a standard light level (100 Lux), which is lower (10-20K ohms). The sensor works by measuring this change.
What payment options are available for the 5mm LDR Sensor GL5537-1?
We accept UPI (Google Pay, PhonePe, Paytm), all major credit/debit cards, and Cash on Delivery (COD) for orders across India. No minimum order value for COD.
How long does delivery take and where do you ship?
We ship the 5mm LDR Sensor GL5537-1 across India including Delhi, Mumbai, Bangalore, Hyderabad, Chennai, and Pune. Delivery typically takes 3-7 business days depending on your location.
Buy the 5mm LDR Sensor GL5537-1 online in India with COD and UPI available across India.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items