The HC-SR504 is a non-contact ultrasonic ranging module with a 20 to 4000mm range. The module includes ultrasonic transmitter, receiver, and control circuit - all on a compact circuit board. * Easy to use * Ranging accuracy up to 3mm * Compact dimensions https://elecena.pl/product/27166758/trusens-hc-sr504-ultrasonic-ranging-module 2024-11-07 https://elecena.pl/product/27166758/trusens-hc-sr504-ultrasonic-ranging-module 2026-05-14