HC-SR501 PIR Motion Sensor Detector - Infrared Motion Sensor 4.8-20V DC Wide Voltage, 0.5s-200s Adjustable Delay, Dual Trigger Modes for Home Security, Energy Efficiency & IoT Devices (Pack of 3pcs)

[➤Document Support] The usage reference link of HC-SR501 PIR infrared sensor: https://www(DOT)mysensors(DOT)org/build/motion. [➤ Super compatibility] 4.8-20V wide voltage design, compatible with Arduino/Aspberry Pi/ESP8266 and other development boards, can directly connect to 5V/12V smart home control systems. [➤ Intelligent Mode Switching] Supports both non-repeated (L) and repeated (H) trigger modes, with H as default. Provides adjustable delay time (0.3-200S) and block time (0.xx to tens of seconds). [➤ Precise timing control] Dual adjustment of 0.5s-200s delay and 0.5s-60s blockade time, meeting the full scenario requirements from instant response (corridor lights) to continuous monitoring (garage security). [➤ Intelligent Scene Coverage] Accurate human recognition achieved through 100 ° cone detection and 23mm Fresnel lens, effectively avoiding pet accidental triggering (including cat and dog home test report)