5pcs 5V/3.3V Speed Measurement Hall Sensor Module Hall Switch Motor Tachometer Module For DIY

Features: ? - support 5 V / 3.3 V voltage input - on-board signal output, the output signal is effective instruction low level and at the same time, the output signal lights out can be directly and single-chip microcomputer IO connection. - signal detection sensitivity can adjust. -reserve all the way more circuits (P3 voltage drawn). ? Package Included: ? 5 x Speed Measurement Hall Sensor