The **ZP-R** typically refers to a series of **Infrared (PIR) Motion Sensor modules** or specific components used in automatic lighting control and security systems. These parts are designed to detect human presence by measuring changes in infrared radiation. --- ### 1. Key Electronic Components A ZP-R sensor module is generally composed of the following internal parts: | Component | Function | | :--- | :--- | | **Pyroelectric Infrared Sensor** | The core element that detects IR radiation emitted by human bodies. | | **Fresnel Lens** | The plastic dome covering the sensor. It focuses IR light onto the pyroelectric element and expands the detection angle. | | **Signal Processing IC** | (e.g., BISS0001) An integrated circuit that filters the raw signal, amplifies it, and determines if a "trigger" event has occurred. | | **Potentiometers** | Adjustable resistors used to calibrate **Sensitivity** (distance) and **Time Delay** (how long the output stays high). | | **Voltage Regulator** | Ensures the internal circuitry receives a stable 3.3V or 5V even if the input power fluctuates. | --- ### 2. Technical Specifications While specific models vary, most ZP-R series modules share these general characteristics: * **Operating Voltage:** DC 4.5V – 20V (Commonly 5V or 12V depending on the specific sub-model). * **Static Current:** Usually < 50µA – 65µA (Low power consumption). * **Output Signal:** High/Low level (3.3V Digital signal) or Open Collector. * **Detection Range:** 3 to 7 meters (Adjustable). * **Detection Angle:** Approximately 100° to 120° cone. --- ### 3. Connection Pinout Standard ZP-R modules usually feature a 3-pin interface for easy integration with microcontrollers like Arduino or ESP32. ```markdown 1. VCC (+) -> Power Input (e.g., 5V) 2. OUT (S) -> Digital Signal Output (High when motion detected) 3. GND (-) -> Ground ``` --- ### 4. Logic and Operation Modes The electronic logic of the ZP-R usually supports two trigger modes, often selectable via a jumper on the PCB: 1. **Non-repeatable Trigger (L):** The output goes high once motion is detected and stays high for the set time, then goes low regardless of continued movement. 2. **Repeatable Trigger (H):** If motion is detected while the output is already high, the "time delay" clock resets, keeping the output high as long as there is continuous movement.