HC-SR505 Mini PIR Motion Sensor Module

This small PIR sensor detects motion and passes it on to a microcontroller or Arduino, for example for an alarm system. The output delivers 3.3 V and can therefore be connected directly to an ESP8266; no level shifter is needed. The low current consumption suits battery-powered projects.

Recommended alternative with adjustable time and range: HC-SR501 PIR Motion Sensor Module

Recommended Accessories:

• Dupont Cable M-F 20cm 20 Pieces

Features:

• Supply from 4.5 V, so on the 5 V pin and not on 3.3 V
• Output HIGH (3.3 V) on motion, otherwise LOW (0 V)
• Fixed hold time of around 8 s, not adjustable
• Further motion extends the trigger

Application Examples:

• Alarm systems and presence detectors
• Switching on lights on motion
• Battery-powered sensors
• Integration into Home Assistant with ESPHome

Documentation:

• ESPHome documentation: GPIO Binary Sensor
• HC-SR505 with Arduino (Microcontrollers Lab)
• HC-SR505 pinout and data (Components101)

Technical Data:

• Model: HC-SR505 (marked SR505)
• Operating voltage: 4.5 to 20 V
• Current consumption: 75 µA
• Output: high 3.3 V, low 0 V
• Pins: + (VCC), OUT, − (GND)
• Operating temperature: -20 to 80 °C
• Hold time after motion detection: 8 s (±30 %)
• Detection angle: < 100°
• Detection distance: 3 m
• Lens diameter: 10 mm
• Board size: 23 × 10 mm
• Dimensions: 40 × 12 × 12 mm

Scope of Delivery:

• 1× HC-SR505 Mini PIR motion sensor module