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MCP Technology Systems 1 Pack HC-SR501 PIR Pyroelectric IR Infrared Motion Sensor + HC-SR04 Ultrasonic Distance Sensor for Arduino, Raspberry Pi, and other microcontrollers, mens
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" If you buy something that never arrives, or if it arrives significantly different than described, you're eligible for a full refund "
- 1 Pack HC-SR04 + HC-SR501
- Measure distance from 2-450 CM
- Motion detection range: 7 meters
Ultrasonic Distance Sensor
Use an HC-SR04 ultrasonic sensor to give your project the ability to calculate distance. This popular ultrasonic distance sensor provides stable and accurate distance measurements from 2cm to 450cm. It has a focus of less than 15 degrees and an accuracy of about 2mm.
Pyroelectric Infrared Motion Sensor
The HC-SR501 PIR Pyroelectric IR Infrared People Detector Module is used to detect the presence of motion. PIR sensors are commonly used to turn lights on and off automatically when people enter and leave a room. This Pyroelectric IR sensor has range of about 7 meters with a 120 degree cone angle. It can operate from 3.6-20V but we recommend powering it with 5V. There are adjustments for the detection range output delay.
Real customer reviews - Average rating: 4.2 Stars
2 Stars By Luis on 2016-02-22
You get what you pay for...
The HC-SR04 cuts off at about 90cm. Not getting the 450cm advertised.
Update: This HC-SR04's PING pin stays HIGH when it timeouts. I was going crazy until I read a lot of cheap imitations behave this way, and the only way to fix it is to cycle the power, or tap on the receiver. People on forums suggested to use a transistor to control the Vcc input using an extra pin and when we get to this state to cycle the power via the transistor. I did that and it works.
5 Stars By Phil Reynolds on 2016-03-30
Awesome price and works as they should. What else can you really say about it.
5 Stars By Dumpofdeath on 2016-01-21
Both sensors work as expected. They are very comparable to similar sensors through Sunfounder. Work perfectly with an Arduino Mega and Uno.
5 Stars By Shai on 2016-04-20
5 Stars By na li on 2017-03-22