SKU: SENS-1864
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Senba D204B Active PIR Motion Sensor with EMI Pyroelectric Infrared Detector

₹51.00 (Inclusive of all taxes)
Out of Stock

The Senba D204B is an active pyroelectric infrared (PIR) motion sensor module featuring EMI-shielded dual-element detectors for reliable human presence detection in lighting, security, and automation systems. It operates on a wide 3-15V DC supply and is compatible with common microcontroller platforms.

Features

  • Active PIR sensor with EMI-protected dual-element pyroelectric detector for high noise immunity.
  • Wide detection range up to 10 meters with a 110° field of view for area coverage.
  • Operates from a 3-15V DC supply, offering flexibility for various power systems.
  • Features adjustable sensitivity and output delay time for application-specific tuning.
  • Compact 3.8x5mm sensing window with high responsivity (≥3300V/W) in the 5-14µm spectral range.

Out of stock

Description

The Senba D204B PIR motion sensor utilizes an active detection principle with a dual-element pyroelectric ceramic detector. The dual-element design provides common-mode rejection, effectively suppressing false triggers caused by ambient temperature fluctuations and electromagnetic interference (EMI). The integrated FET source follower buffers the signal for direct interface with control circuits.

Engineered for stability across an operating temperature range of -20°C to 70°C, this sensor delivers reliable performance in indoor environments. Its compact form factor and simple three-pin interface (VCC, GND, OUT) facilitate easy integration into lighting controls, security alarms, and automated toy or display systems.

Key Features

  • EMI-shielded pyroelectric infrared detector for robust operation in electrically noisy environments.
  • Dual sensing elements provide temperature drift compensation and improved stability.
  • High sensitivity (≥3300V/W) ensures reliable detection of subtle infrared radiation changes.
  • Wide 3-15V DC operating voltage range supports compatibility with 3.3V, 5V, and 12V systems.
  • User-adjustable sensitivity and retrigger delay time via onboard potentiometers.
  • Compact and durable construction suitable for integration into finished products.

Applications

  • Automatic lighting control for indoor/outdoor security, porch, and corridor lights.
  • Energy-saving systems for office or home automation, triggering HVAC or appliance power.
  • Intruder detection and alarm system activation in security panels.
  • Interactive displays and toys requiring motion-triggered responses.
  • Occupancy sensing for smart building management and resource optimization.

Technical Specifications

Model NumberD204B
Sensor TypeActive Pyroelectric Infrared (PIR)
Detection RangeUp to 10 meters
Detection Angle110°
Spectral Range5 - 14 µm
Sensitivity≥ 3300 V/W
Supply Voltage3 - 15 V DC
Output SignalDigital (High/Low)
Operating Temperature-20°C to +70°C
Storage Temperature-40°C to +80°C
IR Receiving Electrode2 x 1mm, Dual Element
Window Dimensions3.8 mm x 5 mm

Frequently Asked Questions

What is the difference between active and passive PIR sensors?

The D204B is an active PIR sensor, meaning it emits a low-level infrared signal and detects changes in the reflected pattern, offering potentially faster response than purely passive sensors that only detect ambient IR radiation. Its active design, combined with EMI shielding, enhances reliability in environments with electrical noise.

How do I adjust the sensitivity and delay time on this sensor?

The module includes onboard potentiometers. One adjusts the sensitivity threshold for triggering, allowing you to ignore smaller movements. The other sets the delay time, which determines how long the output signal remains active after motion is detected before resetting.

What is the output signal format and how do I connect it to an Arduino?

The sensor provides a digital HIGH/LOW output signal. Connect VCC to Arduino 5V, GND to Arduino GND, and the OUT pin to any digital input pin on the Arduino. The pin will go HIGH when motion is detected and return LOW after the configured delay period.

Can this sensor detect motion through glass or plastic windows?

No. Standard glass and many plastics are opaque to the infrared wavelengths (5-14µm) used by PIR sensors. The sensor must have an unobstructed line of sight to the detection area for reliable operation.

Package Includes

  • 1 x Senba D204B Active PIR Motion Sensor Module

Additional Information

Weight 0.02 kg
Dimensions 0.4 × 0.3 × 0.1 cm