Description
HC-SR501 PIR motion sensor module that detects human body infrared radiation. When someone enters the sensing range, the output goes high (3.3V); when they leave, it automatically delays and drops low. Use it for security alarms, automatic lighting, automatic doors, and home automation.
It runs on DC 5–20V with just 65 µA static power consumption. Delay time is adjustable from 0.3 to 18 seconds, block time is 0.2 seconds, and the trigger mode is jumper-selectable: L (non-repeatable) or H (repeatable, the default). Detection covers a cone of less than 120° out to 7 meters, and it works from -15 to +70°C. The board is 32 x 24 mm with 28 mm screw-hole spacing and a 23 mm Fresnel lens.
A light-control position is provided on the board (photoresistor not installed by default) so it can be set to stay off in bright daylight. Sold as a 2-pack. I check every order before it ships. Ships from NY, USA.
See also: Robot Sensors · 37 in 1 / 45 in 1 Sensor Modules Starter Kit for Arduino UNO R3 / MEGA2560 · HC-SR04 Ultrasonic Ranging Sensor Module for Arduino, 2-450cm, with Mounting Bracket Options · Guide: Which Sensor Should You Buy? Temperature, Motion, Distance, and Gas
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