SKU: SENS-1942
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Senba D203B Dual PIR Sensor Alarm System Motion Detector - TO-5 Package

₹82.00 (Inclusive of all taxes)
Out of Stock

The Senba D203B is a dual-element passive infrared (PIR) sensor in a TO-5 metal can package, designed for high-sensitivity motion detection in alarm systems. It features a wide spectral response and a broad operating voltage range, making it compatible with various 3V to 15V DC security and automation circuits.

Features

  • Dual-element PIR sensor for reliable motion detection and reduced false alarms.
  • Broad spectral response of 5–14µm, optimized for human body infrared radiation.
  • High output signal ≥3500mV (Vp-p) and sensitivity ≥3300V/W for strong detection performance.
  • Wide operating voltage range from 3V to 15V DC for flexible system integration.
  • Robust TO-5 metal encapsulation suitable for industrial temperature ranges from -30°C to +75°C.

Out of stock

Description

The Senba D203B utilizes a dual-element pyroelectric infrared receiver to detect changes in thermal radiation, typically emitted by moving objects like humans. The matched elements help cancel out common-mode environmental noise, enhancing stability. The sensor’s high detectivity (D* ≥1.4×10⁸ cmHz¹/²/W) and low output noise (<70mV) ensure reliable signal generation for processing by subsequent alarm or control circuitry.

Housed in a hermetically sealed TO-5 metal package, the D203B is built for durability across a wide operating temperature range. Its standardized pinout and voltage requirements allow for straightforward integration into existing PIR-based motion detector modules, security system panels, and automated lighting controls.

Key Features

  • Dual-element pyroelectric infrared (PIR) detection for improved signal-to-noise ratio.
  • TO-5 metal can encapsulation provides electromagnetic shielding and mechanical robustness.
  • High transmittance window (≥75%) maximizes infrared signal capture.
  • Low offset voltage and output balance (<10%) ensure stable baseline performance.
  • Wide supply voltage compatibility from 3V to 15V supports diverse power designs.
  • Extended temperature operation from -30°C to +75°C for reliable performance in varied environments.
  • Optimized performance-to-cost ratio for volume security and automation applications.

Applications

  • Core sensing element in commercial and residential security alarm system motion detectors.
  • Automatic lighting control and energy management systems in buildings.
  • Presence detection for smart home automation and IoT devices.
  • Intrusion detection modules for perimeter security and access control systems.

Technical Specifications

Model NumberD203B
Package TypeTO-5
IR Receiving Electrode2×1mm, 2 elements
Window Size5×3.8mm
Spectral Response5–14µm
Window Transmittance≥75%
Signal Output (Vp-p)≥3500mV
Sensitivity≥3300V/W
Detectivity (D*)≥1.4 ×10⁸ cmHz¹/²/W
Noise (Vp-p)<70mV
Output Balance<10%
Offset Voltage0.3–1.2V
Supply Voltage3–15V DC
Operating Temperature-30°C to +75°C
Storage Temperature-40°C to +80°C

Frequently Asked Questions

What is the purpose of the dual elements in the Senba D203B sensor?

The dual pyroelectric elements work in a differential configuration. This design cancels out common-mode environmental noise, such as gradual temperature changes or electrical interference, making the sensor significantly more sensitive to the rapid infrared changes caused by a moving person. It drastically reduces false alarms compared to single-element sensors.

What is the required supply voltage and how do I interface this sensor?

The D203B operates from a wide 3V to 15V DC supply. It is a raw sensing element, not a complete module. Its output is an analog voltage signal (≥3500mV Vp-p). You must connect it to a dedicated PIR amplifier or signal conditioning circuit (often using a BISS0001 or similar chip) to filter, amplify, and convert the raw pyroelectric signal into a clean digital trigger for your microcontroller or alarm panel.

Can this sensor be used outdoors or in harsh environments?

While the TO-5 metal package is robust, the D203B itself is not waterproof or sealed against condensation. For outdoor or damp environments, it must be installed inside a protective, sealed housing with an appropriate infrared-transmissive window (like Fresnel lens arrays used in standard PIR motion detectors) that maintains its 5-14µm spectral transmittance.

Package Includes

  • 1 x Senba D203B Dual Elements Passive Infrared PIR Sensor

Additional Information

Weight 0.01 kg
Dimensions 5 × 3 × 1 cm