3pcs HCSR501 PIR Motion Sensor Module Adjustable Delay Timer for Arduino Raspberry Pi Projects

Compact Delay Trigger Timer Module Key benefits Wide input range: accepts DC 4.5 to 20V so it works with common battery and power supply systems. Very low standby consumption: quiescent current is under 50uA, minimizing power drain when idle. Flexible triggering: selectable trigger behavior lets you choose nonretriggering lowlevel trigger or retriggering level trigger. Default is retriggering on level. Adjustable delay: delay can be set from about 0.1 second up to tens of seconds, with a standard adjustable range of 5 to 200 seconds to suit many timing needs. Small footprint: compact PCB measures 32mm x 24mm for easy integration into tight spaces. What it does Provides a timed output based on an input trigger. When the module receives a trigger signal it holds the output for the configured delay period, then releases it. Trigger mode controls whether the module accepts repeated triggers during the timing interval. Performance and compatibility Operates reliably across DC 4.520V supplies, compatible with common controllers, sensors, and relay driver circuits. Low idle current supports batterypowered and energysensitive applications. Compact PCB simplifies mounting inside enclosures or on project boards. Physical details Board dimensions: 32mm x 24mm. Simple wiring and compact size make it suitable for retrofit and DIY projects. Typical applications Lighting automation: create a delayed turnoff for lights so they remain on for a set time after a sensor or switch is activated. Sensor pulse stretching: extend short sensor pulses for reliable detection or to drive relays and indicators. Control delay for motors or actuators: implement soft start or delayed shutdown sequences in small motor or actuator systems. How it solves common problems Prevents nuisance flicker or rapid cycling by providing a stable timed output. Reduces power waste in standby by keeping quiescent current very low. Offers timing flexibility to match different devices and scenarios without changing hardware. Simple setup tips Choose the appropriate supply within 4.5 to 20V. Select trigger mode according to whether you need retriggering during the timing interval. Adjust the delay to the required duration within the module range. This compact, lowpower timer module provides a straightforward timing solution for control, automation, and sensor projects where precise, adjustable delay and small size are important.