SKU: SENS-1944
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Senba BM612 Digital PIR Motion Sensor Module

₹83.00 (Inclusive of all taxes)
Out of Stock

The Senba BM612 is a smart digital PIR motion sensor module with integrated DSP, designed for low-power 3.3V systems like Arduino, ESP32, and Raspberry Pi. It provides a Schmitt trigger relay output for direct control of lights, alarms, or other devices upon motion detection.

Features

  • Digital Signal Processing (DSP) for reliable motion detection
  • Low operating voltage (3.3V) and current consumption (<10mA)
  • Schmitt trigger relay output for clean switching signals
  • Built-in high-pass filter to screen out interference
  • Configurable output lock time (2s to 3600s)

Out of stock

Description

The BM612 Digital PIR Sensor utilizes a dual-element pyroelectric sensor with differential high-impedance input to detect changes in infrared radiation caused by moving bodies. Its integrated digital signal processor (DSP) analyzes the sensor signal, applying filtering algorithms to reject common sources of electrical and RF interference, ensuring high false-alarm immunity.

This module is a complete detector solution with all conditioning circuitry housed onboard. It operates from a 3.3V DC supply and features a configurable output duration, making it suitable for battery-powered or energy-conscious applications like smart lighting, occupancy sensing, and security systems.

Key Features

  • Integrated Digital Signal Processing (DSP) core
  • Two-way differential pyroelectric sensor input
  • Excellent power supply rejection ratio (PSRR)
  • Low voltage operation (3.3V DC) with minimal current draw
  • Schmitt trigger output for robust relay or logic interfacing
  • On-chip oscillator and built-in high-pass filter
  • User-adjustable sensitivity and output timer settings
  • Compact, ready-to-use module design

Applications

  • Automatic lighting control for corridors, stairwells, and storage rooms
  • Occupancy detection in smart home and office energy management systems
  • Battery-powered security alarms and intruder detection modules
  • Power-saving controls for TVs, monitors, and digital photo frames
  • Motion-activated triggers for toys and interactive displays

Technical Specifications

Model NumberBM612
Operating Voltage3.3V DC
Max Operating Current9.5 mA (0.0095A)
Sensitivity Threshold2000 μV
Output Lock Time (Low)2 Seconds
Output Lock Time (High)3600 Seconds (1 Hour)
High-Pass Filter Cut-Off0.44 Hz
On-Chip Oscillator Frequency64 kHz
Output TypeSchmitt Trigger REL (Relay) Output
Detection TechnologyPassive Infrared (PIR)
Signal ProcessingDigital (DSP)

Frequently Asked Questions

What is the operating voltage for the BM612 sensor?

The BM612 operates strictly at 3.3V DC. Applying a higher voltage, such as 5V, will damage the sensor. Ensure your power supply or microcontroller logic level is compatible with 3.3V systems.

How does the output signal work?

The module provides a Schmitt trigger REL output. When motion is detected, the output pin goes high (or low, depending on configuration) and remains in that state for a user-configurable lock time, which can be set from 2 seconds up to 3600 seconds (1 hour). This clean digital signal can directly drive a relay coil or connect to a microcontroller GPIO pin.

Can I adjust the sensor's sensitivity or range?

Yes, the BM612 features adjustable sensitivity. The specific method (potentiometer or external resistor) is detailed in the datasheet. The built-in DSP and high-pass filter (0.44 Hz cut-off) also help fine-tune detection to ignore minor environmental fluctuations and electrical noise.

Package Includes

  • 1 x BM612 Digital PIR Motion Sensor Module

Additional Information

Weight 0.01 kg
Dimensions 5 × 3 × 1 cm