This set contains 5 pieces SW-200D vibration sensors. These sensors are designed to detect vibrations and also respond when held at an angle of at least 15 degrees. They are ideal for security systems, motion detection and other applications where detecting movement or vibration is important. https://elecena.pl/product/27739226/opencircuit-sw-200d-vibration-sensor-5-pcs 2025-01-23 https://elecena.pl/product/27739226/opencircuit-sw-200d-vibration-sensor-5-pcs 2026-02-20