The **M-1Z1-R** is an electronic component primarily classified as a **Digital Passive Infrared (PIR) Sensor**. It is a high-sensitivity motion detection element commonly used in security systems, smart lighting, and consumer electronics. --- ### 1. Key Technical Specifications The device integrates an infrared-sensitive element with a specialized Application Specific Integrated Circuit (ASIC) to handle signal processing. | Parameter | Specification (Typical) | | :--- | :--- | | **Type** | Digital Pyroelectric Infrared Sensor | | **Supply Voltage (Vdd)** | 2.7V to 3.3V DC | | **Operating Current** | < 15μA (Ultra-low power) | | **Output Type** | Digital Logic High/Low | | **Detection Angle** | ~100° (Horizontal/Vertical) | | **Package Style** | TO-5 Metal Can (with optical filter window) | --- ### 2. Internal Electronic Architecture The M-1Z1-R is more than just a raw sensor; it contains a miniature system inside the metal casing: 1. **Pyroelectric Element:** Dual-element sensing ceramics that detect changes in thermal radiation (IR) from moving objects. 2. **Optical Filter:** A silicon-based window that blocks visible light and allows only infrared wavelengths (approx. 5μm to 14μm) to pass through. 3. **Built-in ASIC:** * **A/D Converter:** Converts the analog signal from the ceramic element into digital data. * **Signal Processing:** Filters out background noise and identifies specific motion patterns. * **Logic Control:** Manages the "Hold Time" and "Sensitivity" logic. --- ### 3. Pin Configuration The M-1Z1-R typically features a 3-pin interface for simplified integration: * **VDD:** Power Supply (Positive). * **VSS:** Ground (Negative). * **OUT:** Digital output signal. When motion is detected, this pin pulls to a Logic High state. --- ### 4. Implementation Circuitry To use the M-1Z1-R in a design, the following external electronic components are usually required: * **Fresnel Lens:** Essential for focusing infrared energy onto the sensor element and expanding the detection range. * **Decoupling Capacitor:** A 0.1μF ceramic capacitor between VDD and VSS to filter power supply noise. * **Pull-up/Down Resistors:** Depending on the MCU interface, a resistor may be used to ensure signal stability. ---