Description: 1. HCSR501 is a Passive Infrared (PIR) motion sensor, also known as a PIR motion detector or PIR occupancy sensor. It detects human motion in its field of view by sensing the infra-red radiation changes caused by body heat. 2. Features: It has a wide detection angle of approximately 110 degrees horizontally and 60 degrees vertically. The sensor comes with an adjustable sensitivity level, which can be set using a jumper on the PCB. It consumes low power (<50mA) and operates on 5V DC. 3. Detection range: HCSR501 has a detection range of up to 8 feet (2.4 meters), making it suitable for detecting human movement in small to medium-sized areas. The sensor can be used both indoors and outdoors, but performance may vary depending on environmental conditions. 4. Applications: This sensor is widely used in various IoT projects, including home automation systems, intrusion detection systems, security cameras, pet feeders, and automatic door openers. Its low cost makes it an affordable option
| Specification | Details |
|---|---|
| Model Number | HCSR501 |
| Sensor Type | Passive Infrared (PIR) |
| Detection Range | Up to 12 meters |
| Field of View | 120 degrees |
| Operating Voltage | 3.5V ~ 15V |
| Current Consumption | 10mA @ 9V 1.8mA @ 5V |
| Power Requirements | External power source required |
| Interface | TTL level open collector output |
| Operating Temperature | -20°C ~ +70°C |
| Storage Temperature | -40°C ~ +80°C |
| Sensitivity Adjustment | Adjustable through a jumper on the PCB |
| Dimensions | 35mm x 18.5mm x 7mm |
| Weight | Approximately 4 grams |
