Fargo Controls, Inc. Rectangular DC 3/4 & AC 2 Wire Inductive Proximity Sensor S3821

The S3821 is a DC NPN normally closed inductive proximity sensor with a 2 mm operating distance, designed for use with a 10-30 Vdc power supply and capable of switching up to 200 mA. It features short circuit and reverse polarity protection, an LED function indicator, and an IP67-rated plastic case with flush mounting. The sensor operates at up to 1 kHz, maintains a voltage drop of less than 1.8 V when ON, and has a power drain under 15 mA at 24 Vdc. Repeatability is within 3% of the rated sensing distance, and hysteresis is less than 10%. The standard output connection is a 2 m PVC cable, with 5 m cable and C1 connector options available. Operating temperature ranges from -25 °C to +70 °C, with a +100 °C variant available on request.