This PIR module works on the pyroelectric principle, where a change in detected temperature produces an increase or decrease in generated electric potential. The module consists of a quad element passive infrared sensor, a lens and associated circuitry, mounted on a PCB. Having a wide field of view in the horizontal and vertical planes as well as 12 detection zones make this module suitable for a wide range of applications.

• High density polyethylene lens
• Sensing range 7.5m
• Detection angle 97.7°
• Current 3mA
• Output voltage 4.5V
• Temperature range -20°C to +50°C

PIR Module with Lens, 4.5 to 10Vdc Voltage, Standard Detection Type, 90° Detection Angle, -20°C to +50°C, This Sensor Module Consists of a Dual Element PIR Sensor, Fresnel Lens and Associated Circuitry, Mounted on a PCB, The Module Operates by Detecting a Change in Detected Infrared Energy, from Humans or other Source

• Wide detection area
• Nicera SGM5910-7-P type

The HC-SR501 is a PIR motion detector with an adjustable range that can sense up to 7m. The sensor uses infrared technology and features high sensitivity, ultra-low voltage mode, high reliability, and is ideal for using in battery-operated equipment. This sensor is designed for use in security products, alarm systems, lighting control, industrial automation, toys, etc.

• 7m Sensing range
• Wide voltage range
• Low power consumption
• Adjustable delay
• Temperature compensation

This device is a miniature passive Infrared (PIR) motion sensor that features automatic control and a repeatable trigger. Typical applications include security products, industrial automation and control, auto sensing of electrical equipment, lighting, toys, etc. The attached datasheet also includes details of a testing hook up with an Arduino board.

• Small size
• Wide operating voltage
• Low power operation
• High output signal