D203B Dual Element PIR Sensor for Alarm Systems
D203B Dual Element PIR Sensor for Motion Detection
The D203B is a dual-element passive infrared (PIR) sensor designed for motion detection in alarm systems and automation projects. It detects changes in infrared radiation emitted by moving objects like people or animals, providing a digital output when motion is sensed. With high sensitivity and low power consumption, it's ideal for battery-powered security devices.
Key Specifications
| Specification | Value |
|---|---|
| Supply Voltage | 3V - 6V DC |
| Detection Range | 3 - 7 meters |
| Detection Angle | 110° |
| Output Signal | Digital high/low (3.3V TTL) |
| Operating Temperature | -20°C to +70°C |
What You Can Build With This
- Home intrusion alarm with buzzer and LED indicator
- Automatic room light controller
- Smart IoT motion notifier using ESP8266
- Pet detection system for automatic feeders
Compatibility
This PIR sensor works seamlessly with any microcontroller that accepts 3.3V or 5V logic, including Arduino Uno, ESP32, and Raspberry Pi. It is commonly paired with relay modules to control lights, or with wireless modules for remote alerts.
Wiring Notes
Connect VCC to 5V (or 3.3V), GND to ground, and OUT to a digital input pin. No external pull-up or pull-down is required as the sensor output is active high. Some modules include a sensitivity adjustment potentiometer and a delay timer; adjust according to your application.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, simply connect OUT to any digital input pin and read the state. No additional library is required.
What is the detection range?
The D203B typically detects motion from 3 to 7 meters, depending on the environment and the sensitivity setting.
Does it work with battery-powered projects?
Absolutely. With a quiescent current under 50µA, it's well-suited for low-power applications using 3V to 6V batteries.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
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