Design tip: Always include a series resistor or current-limiting circuit to prevent excessive forward current if the diode is accidentally forward-biased.

| ECHO pin state | SENSE pin state | Internal state | |----------------|----------------|----------------| | LOW | LOW | Regulate | | LOW | HIGH | Regulate | | HIGH | LOW | Listen | | HIGH | HIGH | |

This article breaks down the key specifications, pin configurations, and application insights typically found in the VPM2SM documentation. 1. Product Overview

The VPM2SM’s side-looking package is uniquely suited for optical interrupters, edge-detection sensors, and compact transmissive systems.