Four Channel wireless system

Basic four channel wireless

Relays, The Electromechanical amplifier

How Encoders and Decoders work

Encoder and Decoder Selection Guide

Characteristics of wireless systems


Pyroelectric Infrared Sensor and Fresnel lens

DPB PYD1798 Digital Motion Detector components

DP-001 Digital Motion Detector Module

DP-002 Digital Motion Detector Module

Digital direction sensing motion detector

Motion detector module

Motion detector kit 

How IR motion detector components work

Focusing devices for pyroelectric sensors

RIR Reflective Infrared devices  

Free schematics and design info



Digital Infrared Motion Detector Module

With NEW  Digital  Sensor






Micropower miniature Digital Motion Detector module operates on 2.7 to 3.6 volts at only 40 microamperes is ideal for OEM applications.

This tiny module is a basic building block designed for use in the construction of a motion detector device. It is only 0.5 X 0.7 inch and includes a digital pyroelectric infrared sensor and a microprocessor.

The DP-002B eliminates the complex  amplifier and comparator circuits that must follow a typical analog pyroelectric infrared sensor. The DP-002B output can source and sink up to 25 milliamperes to directly drive a light emitting diode or other load. The output can also be fed into a logic or other circuit to add specific functions such as robot control or triggering a camera shutter.

The DP-002B is designed to detect infrared radiation (IR) from a moving human or animal both in daylight and at night. It will only respond to a moving source of infrared radiation. It will not detect a static IR source. It can be powered by a 3 volt lithium coin cell, two AAA cells or a 2.7 to 3.6 volt filtered and regulated power supply.










  • Small 0.35 inch (8.9mm) thick, 0.5 inch (12.7mm) wide, 0.7 inch (17.8mm) long
  • Can be powered by 2.7 to 3.6 volts DC
    • One lithium coin cell
  • Micropower circuits for low current drain
    • Average current ~ 40 microamperes
    • Long battery life
  • Microprocessor output 0 to VDD
    • 25 milliampere source and sink current
    • Can directly drive an LED and piezo buzzer
  • Programmable sensitivity setting
    • Adjusts detection range
  • Programmable dwell setting
    • Adjusts output ON time from 200 milliseconds to 10 minutes
  • Only three wire connections needed
    • Two for power
    • One for output


Digital  Technology

 The Glolab DP-002B module uses a  Digital  infrared detector. This new technology incorporates a sensor, amplifier, filter, A/D converter in one TO5 package.

 Unlike typical analog pyroelectric sensors, the digital sensor outputs serial data pulses that represent the amplitude of detected infrared radiation in digital form. Since all of the amplification and signal processing is done within the sensor package, the detector has very high immunity to RF radiation from cell phones and other sources.

Below is a block diagram of the DP-002B module. The processor decodes the serial bits from the digital sensor and outputs a high level when motion is detected. The amount of time that the output remains on (dwell) can be programmed by an external resistor and can be set for one of ten times from 200 milliseconds to 10 minutes. Detection sensitivity that affects detection range can also be programmed for one of five sensitivity levels by an external resistor that is connected only during programming. The module is supplied with default settings of medium sensitivity and 1 second dwell time.




A minimum of three wires must be connected to the DP-002B; two for power and one for output. Since all three wires carry only DC levels and not signals, the DP-002B module can be located remotely from the load that it drives.


A Fresnel lens or other type of lens can be used with the DP-002A for long range detection.


See how to order

and view or print a complete manual for the DP-002B module. Manual includes functional description and pinout diagram.

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Copyright 2015
Glolab Corporation