555-28027 Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – PIR Sensor (555-28027)

Web Site: www.parallax.com
Forums: forums.parallax.com
Sales: [e-mail]
Technical: [e-mail]
Office: [phone]
Fax: [phone]
Sales: [phone]
Tech Support: [phone]
PIR Sensor (#555-28027)
The PIR (Passive Infra-Red) Sensor is a pyroelectric device that detects motion by sensing changes in the
infrared (radiant heat) levels emitted by surrounding objects. This motion can be detected by checking
for a sudden change in the surrounding IR pattern. When motion is detected the PIR sensor outputs a
high signal on its output pin. This logic signal can be read by a microcontroller or used to drive an
external load; see the source current limits in the features list below.
NOTE: Revision B of this sensor provides many updates and improvements from Revision A. If your PIR
Sensor’s PCB does not read “Rev B,” please use the information found in the Revision History section on
page 5.
Features
 Detect a person up to approximately 30 ft
away, or up to 15 ft away in reduced
sensitivity mode
 Jumper selects normal operation or reduced
sensitivity
 Source current up to 12 mA @ 3 V,
23 mA @ 5 V
 Onboard LEDs light up the lens for fast visual
feedback when movement is detected
 Mounting holes for #2 sized screws
 3-pin SIP header ready for breadboard or
through-hole projects
 Small size makes it easy to conceal
 Easy interface to any microcontroller
Key Specifications
 Power Requirements: 3 to 6 VDC; 130 µA idle,
3 mA active (no load)
 Communication: Single bit high/low output
 Operating temperature: 32 to 122 °F
(0 to 50 °C)
 Dimensions: 1.41 x 1.0 x 0.8 in
(35.8 x 25.4 x 20.3 cm)
Application Ideas
 Motion-activated nightlight
 Alarm systems
 Holiday animated props
Copyright © Parallax Inc.
PIR Sensor (#555-28027)
v2.2 6/13/2012 Page 1 of 5