SKU: SENS-1933
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Senba BQ604 Digital Quad PIR Motion Sensor - 4-Element, 6-Pin

₹94.00 (Inclusive of all taxes)
Out of Stock

The Senba BQ604 is a fully integrated digital PIR motion sensor featuring four detection elements and a 6-pin interface, designed for low-power, intelligent motion detection in smart lighting, security, and automation systems compatible with 3.7V logic.

Features

  • Quad-element PIR sensor with 4.9° x 4.9° detection window for precise motion sensing.
  • Ultra-low power consumption with a maximum operating current of 9.5 µA.
  • Fully integrated digital control with adjustable delay, sensitivity, and lighting thresholds.
  • Robust design incorporates a 0.44 Hz high-pass filter to minimize false triggers.
  • Compact form factor (approx. 5 x 3 x 1 cm) ideal for ceiling and corridor installations.

Out of stock

Description

The Senba BQ604 Digital Quad PIR Sensor utilizes four pyroelectric infrared (PIR) sensing elements arranged to create a 4.9° by 4.9° detection window, providing a balanced horizontal and vertical field of view. Its core is a fully integrated digital control chip that manages signal conditioning, featuring an on-chip 64 kHz oscillator and a 0.44 Hz high-pass filter to effectively reject environmental noise and DC drift, ensuring reliable motion detection with minimal false alarms.

Operating from a 3.7V supply with a remarkably low current draw of 9.5 µA, this sensor is engineered for battery-powered and energy-efficient applications. User-configurable parameters for delay time, sensitivity, and ambient light level allow for fine-tuning to specific environmental conditions and application requirements, making it a versatile solution for automated control systems.

Key Features

  • Quad-Element PIR Array: Four independent sensing elements provide enhanced detection stability and pattern analysis compared to dual-element designs.
  • Integrated Digital Signal Processor: On-chip digital control handles signal processing, filtering, and output logic, simplifying external circuitry.
  • Ultra-Low Power Architecture: Optimized for minimal energy consumption, making it suitable for wireless and always-on battery-operated devices.
  • Configurable Operational Parameters: Adjustable delay (on-time), sensitivity (gain), and light-level threshold via external components or digital commands.
  • Advanced Noise Immunity: Built-in 0.44 Hz high-pass filter effectively eliminates interference from temperature drift and low-frequency background noise.
  • Compact and Robust Construction: Durable package designed for reliable performance in residential and commercial indoor environments.

Applications

  • Automatic ceiling lighting and corridor light control in smart buildings.
  • Battery-powered wireless security sensors and intrusion detection systems.
  • Energy management systems for occupancy-based HVAC and appliance control.
  • Smart home automation for activating fans, displays, or audio systems upon detected motion.
  • Public restroom and storage area lighting automation to conserve energy.

Technical Specifications

Manufacturer Part NumberBQ604
Sensor TypeDigital Quad-Element PIR (Pyroelectric Infrared)
Operating Voltage3.7 V DC
Max Operating Current9.5 µA
Sensitivity2000 µA (Typical Signal Current)
Detection Window (FOV)4.9° (Horizontal) x 4.9° (Vertical)
High-Pass Filter Cut-Off0.44 Hz
On-Chip Oscillator Frequency64 kHz
Interface / Pins6-pin Digital
Adjustable ParametersDelay Time, Sensitivity, Light Threshold

Frequently Asked Questions

What is the operating voltage range for the Senba BQ604 sensor?

The Senba BQ604 is designed to operate at 3.7V DC. It is critical to adhere to this voltage specification to ensure proper functionality of the integrated digital circuitry and to prevent damage. Exceeding this voltage may permanently impair the sensor's performance.

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

The delay time (output hold duration after detection) and sensitivity (detection threshold) are user-configurable parameters. Adjustment is typically achieved by connecting external resistors or capacitors to specific pins on the 6-pin interface, as detailed in the manufacturer's application notes. The light threshold can also be set to prevent activation during daylight hours.

What does the '4.9 x 4.9' detection window specification mean?

This specification refers to the sensor's field of view (FOV), which is approximately 4.9 degrees in both the horizontal and vertical planes. This creates a relatively narrow, square detection window ideal for targeting specific areas like doorways, corridors, or beneath a ceiling-mounted fixture, minimizing coverage of unwanted zones.

Can this sensor be used outdoors?

The Senba BQ604 is primarily designed for indoor applications. Its datasheet does not specify an IP rating for water or dust resistance. For outdoor use, the sensor module must be housed within a fully sealed, weatherproof enclosure that includes a proper Fresnel lens window designed for PIR transmission to protect it from rain, dust, and extreme temperatures.

What is the purpose of the 0.44 Hz high-pass filter?

The integrated 0.44 Hz high-pass filter is crucial for signal stability. It blocks very slow-changing signals, such as those caused by gradual ambient temperature drift (e.g., from sunlight warming a room). This filtering action ensures the sensor only responds to the faster infrared fluctuations generated by moving objects, significantly reducing false triggers.

Package Includes

  • 1 x Senba BQ604 Digital Quad PIR Sensor Module

Additional Information

Weight 0.01 kg
Dimensions 3 × 5 × 1 cm