20piece pack of 4.5 x 2.2 mm capacitive electret microphone pickups with 52 dB sensitivity Key benefits Small footprint solves space constraints in compact electronics. The 4.5 x 2.2 mm size fits tight enclosures where larger microphones will not. Reliable audio capture for clear voice input. The capacitive electret design provides consistent pickup suitable for many consumer and embedded applications. Bulk pack of 20 reduces procurement steps for repairs and small production runs, ensuring you have spare units on hand. What this product does and why you need it Captures acoustic signals and converts them into electrical audio signals for processing, recording, or transmission. Ideal when replacing worn or damaged microphones in small devices, or when adding a microphone input to a compact prototype or product. The compact dimensions and standard form factor make these microphones practical for confined layouts without compromising basic pickup performance. Key attributes Function: Capacitive electret microphone pickup for audio capture. Quantity: 20 pieces per pack. Size: 4.5 x 2.2 mm, designed for compact installations. Performance: 52 dB sensitivity rating for general voice and ambient sound detection. Material and construction: Electret capsule construction for stable operation in typical electronic environments. Compatibility and integration Suited to a wide range of small consumer and embedded devices where a compact electret microphone is required. Works with voice processing circuits, audio amplifiers, ADC inputs, and typical microphone preamplifier stages. Can be used in , prototyping, and low to medium volume manufacturing setups. Typical use scenarios and replacement: Swap out damaged or degraded microphones in handheld voice recorders, portable intercoms, and compact audio devices. Prototyping and product development: Add voice input to compact consumer electronics, wearable prototypes, and small IoT sensor units. Embedded audio capture: Integrate into hobbyist and professional electronics projects that require a small, reliable microphone for voice commands, event detection, or simple sound recording. Practical notes Pack quantity supports multiple replacements or parallel installations. Measure available space to confirm the 4.5 x 2.2 mm size fits your design before installation. For results, pair with an appropriate preamplifier and power arrangement suited to electret microphone operation. This 20piece set of 4.5 x 2.2 mm capacitive electret microphone pickups with 52 dB sensitivity provides a compact, practical option for repairs, prototyping, and integration into spaceconstrained audio applications.