PIR

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.


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 ?A 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