HC-SR501 PIR Sensor Module for Arduino

The HC-SR501 is a Pyroelectric Infrared (PIR) motion sensor module based on infrared technology. It uses Germany imported LHI778 probe design, offering high sensitivity, high reliability, and ultra-low-voltage operating mode. Widely used in various auto-sensing electrical equipment, especially for battery-powered automatic controlled products.

**SPECIFICATIONS:**

• Voltage: 5V – 20V DC

• Power Consumption: 65mA

• TTL Output: 3.3V (high), 0V (low)

• Lock Time: 0.2 sec

• Trigger Methods: L (disable repeat trigger), H (enable repeat trigger)

• Sensing Range: <120 degrees, within 7 meters

• Temperature Range: -15°C to +70°C

• Dimensions: 32mm x 24mm

• Lens Diameter: 23mm

**FEATURES:**

• Automatic induction – outputs high when person enters sensing range

• Photosensitive control (optional, not factory-set)

• Temperature compensation for summer performance

• Two trigger modes (jumper selectable)

• Induction blocking time (default 2.5s)

• Wide operating voltage range: DC4.5V-20V

• German LHI778 probe for high sensitivity

**APPLICATIONS:**

• Automatically sensing lights (floor, bathroom, basement, porch, warehouse, garage)

• Ventilators and alarms

• Security systems

• Automatic door openers

• Arduino and ESP32 projects

**PACKAGE INCLUDES:**

• 1 x HC-SR501 PIR Sensor Module