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Wide Angle PIR Sensor



The Wide Angle PIR Sensor features a larger detection angle of 180˚. This makes it ideal in applications where users need to track movements across a large, open area. The Wide Angle PIR Sensor is a pyroelectric device, and it detects motion by sensing changes in the infrared levels emitted by surrounding objects. When motion is detected, the Wide Angle PIR Sensor outputs a high signal on its output pin.

ST-00081 Wide Angle PIR Sensor Rev A front 2.jpg ST-00081 Wide Angle PIR Sensor Rev A back 3.jpg

Product Features

  • Single bit output
  • Small size and mounting holes for easy concealment
  • On-board LEDs
  • Power 3V to 6VDC operation 150uA idle, 3mA active (no load) current draw
  • 30mA active (0 ohm resistor) high current draw (open collector output)
  • Detects movement up to 30 ft away
  • 180˚ detection angle for widespread motion detection
  • Adjustable sensitivity to tune for different operating conditions
  • User-selectable "night-time mode" for detecting motion in decreased lighting conditions
  • 4-pin SIP package perfect for breadboard-friendly projects (EN is an optional pin so you can connect the PIR using a standard servo extension cable)
  • Output is activated for about 3 seconds after motion is detected
  • Output stays activated for as long as motion is detected

Technical Details

  • Voltage requirements: 3.0 to 6.0 VDC
  • Current requirements: 150 uA idle, 3 mA active (no load)
  • Communication: Single-bit high/low output
  • Dimensions: 1.42 x 1.42 x 0.79 in (36.0 x 36.0 x 20.2 mm)
  • Operating temperature range: 32 to 122 °F (0 to 50 °C)
  • Warm up period of about 60 seconds, depending room temperature and background conditions

Application Ideas

  • Security Alarm
  • Motion-activated nightlight
  • Holiday animated props

Warning: Voltage- and Static-sensitive Device

  • Wide Angle PIR Sensor is a delicate, static-sensitive device requiring proper voltage
  • Observe proper anti-static techniques when handling them.
  • Disconnect all power before connecting or disconnecting the module to a circuit.
  • Do not reverse polarity of the power connections, it could destroy the device.

Module Dimensions


Pin Definitions

Pin Symbol Type Function
1 GND Ground Ground(0V)
2 VCC Power Power supply
3 OUT Output PIR signaling; HIGH = movement/ LOW = no movement
4 EN (Optional) Input PIR enable(default); HIGH = Enable / LOW = Disable [can be left unconnected]

Indicator LED

Status Detail
On Power on warm-up
Movement detected
Off No movement detected


Symbol Description Minimum Typical Maximum Units
VCC Supply Voltage 3.3 5.0 6 V
ICC Supply Current(No load) 2.8 3 3.2 mA
GND Ground reference connection - 0 - V
VIH Signal high (input) 2.4 3.3 5.0 V
VIH Signal low (input) -0.3 GND 0.3 V
VOH Signal high (output) 2.4 VCC - V
VOL Signal low (output) -0.3 GND 0.3 V


  • Bottom view of PIR Sensor


  • Mode Setting
Symbol Mode Description
1 Night Only activated at night(Depends on the lightness of the environment)
2 All time Activated all the time(Disable the light sensor option)

  • Sensitivity Adjust
Direction Description
Counterclockwise Increase the trigger sensitivity
Clockwise Decrease the trigger sensitivity

Typical Application

Connect to 3.3V or 5V microcontroller. EN can be left disconnected (so you can use a 3-wire cable). Only use EN to turn off the sensor remotely for saving power.


R1 = 0~4.7K

Spectral Response

In most cases the PIR plastic lens will be exposed directly to the area that should be sensing so almost nobody would care about the spectral response of this PIR sensor. A couple of customers mentioned that they will have to enclose their whole projects behind some translucent material and they needed to know which kind of infrared (which wavelength) should be able to pass through their material.

This PIR sensor and the lens are optimized to work with IR light wavelength from 5.5 to 14 um. The graphic below shows the information in a graphic.


Resources and downloads