AM312 Miniature Pyroelectric Human Body Infrared Sensor Module, 2.712V Product overview The AM312 is a compact pyroelectric infrared sensor module designed to detect human body infrared radiation. Its miniature form factor and wide operating voltage range make it suitable for a variety of embedded sensing and automation projects where discreet, reliable presence detection is required. Key benefits Simple presence detection: Provides a straightforward way to sense human presence or motion for automation and control tasks. Easy system integration: Operates from 2.7 to 12V, allowing direct use in common microcontroller and lowvoltage control circuits without special power supplies. Small footprint for discreet installs: The miniature module fits into tight spaces and can be mounted inside enclosures or behind panels where larger sensors do not fit. Lower design overhead: Reduces development time by offering a readymade pyroelectric sensing element in a compact module. Main features Model: AM312 miniature pyroelectric infrared sensor module. Function: Detects infrared radiation emitted by the human body for presence and motion sensing. Operating voltage: 2.7 to 12V DC, suitable for batterypowered and mainsadapted systems. Form factor: Miniature module designed for compact installations and embedded designs. Performance: Intended for reliable detection of human body thermal signatures in typical indoor application scenarios. Compatibility and integration Compatible with common lowvoltage electronics and microcontroller platforms operating within the specified voltage range. Designed for straightforward electrical and mechanical integration into custom control circuits, alarm systems, lighting controllers, and automation products. Can be combined with relays, logic inputs, or driver circuits to control lights, alarms, or other actuators. Typical use scenarios Motionactivated lighting: Switch room or corridor lights on only when people are present, useful for energyconscious lighting control. Occupancy sensing for automation: Detect presence to trigger HVAC adjustments, timers, or system wakeup in embedded devices. Security and alert systems: Supplement door or window sensors to identify human movement inside a protected area. Why choose this module The AM312 module provides a compact and voltageflexible way to add human presence detection to a project without the need for a larger sensor assembly. Its small size and broad operating range simplify both batterypowered and wired installations, making it a practical choice for prototypes and finished products that require discreet motion or occupancy sensing.