Telco SMR8420PG5M Proximity Switch

The Telco SMR8420PG5M Proximity Switch is the receiver half of Telco’s SPACEMASTER proximity-sensing pair, designed for non-contact detection of metal targets on automation lines. Operating from 10-30 V DC, it provides an NPN output for sinking loads up to 120 mA at 30 V DC, and is housed in a durable stainless-steel enclosure for industrial environments. The sensor offers an adjustable sensing range of 0–20 meters and ships with a 5-meter connection cable (PG5 variant), making it suitable for long-distance detection tasks. When paired with Telco’s SMT 8000 transmitter, this receiver forms a complete proximity sensing system for position sensing on conveyors, doors, and automated machinery, with light/dark mode selection and sensitivity adjustments to suit different target sizes and backgrounds. The SMR8420PG5M is commonly used for presence detection, end-of-line monitoring, and machine-guarding applications where non-contact sensing, robustness, and straightforward installation are priorities.