This listing includes two pieces of Si1151AB00_R, a Silicon Labs ambient light sensor with proximity sensing in a compact, surface mount package. The device provides digital sensing suitable for auto brightness, proximity wake functionality, and environmental light monitoring in compact electronics. Key benefits Enables automatic brightness adjustment and proximityaware features in devices with limited space, helping improve user experience and power efficiency. Combines ambient light sensing and proximity capabilities in a single compact package, reducing component count and board space. Digital I2C interface allows straightforward integration with a wide range of microcontrollers and embedded systems. Small, RoHS compliant surface mount device designed for reliable operation in consumer electronics, wearables, and smart devices. Key attributes Functionality: ambient light sensing with proximity measurement in a single integrated device; digital output via I2C interface. Compatibility: suitable for use with common microcontrollers and embedded systems that support I2C communication; designed for integration in consumer electronics and similar applications. Size and packaging: compact surface mount package; RoHS compliant; two units provided in a single listing. Material and construction: plastic encapsulated surface mount component suitable for PCB mounting. Performance characteristics: engineered for reliable ambient light detection and proximity sensing with a compact form factor; optimized for low power operation and fast response (refer to official datasheet for detailed electrical characteristics). Use cases and applications Auto brightness control in smartphones, tablets, and laptops to optimize display readability while conserving battery life. Proximity wake/sleep and basic gesture detection in wearables, smart remotes, or smart home devices. Environmental light monitoring in smart sensors and home automation systems to trigger actions based on ambient illumination levels. Notes This listing contains 2 pieces of Si1151AB00_R. For exact electrical specifications, pinout, and electrical characteristics, please refer to the official Silicon Labs datasheet for the Si1151AB00_R variant.