Fork sensors (slot sensors) are U or L shaped through-beam object detecting sensors that have the transmitter and receiver built into the opposing "fork" arms of the sensor housing. New PS series fork sensor additions include harsh duty U-frame sensors for food applications, L-frame or angled fork sensors for unique mounting situations, and fork sensors for liquid detection. Depending on model, PS series fork sensors are available in visible red, infrared and laser lighting and in sensing ranges from 5mm to 220 mm. Fork sensor advantages include ease of installation with only one connection point, and operational reliability and repeatability with transmitter and receiver built into the same housing. Starting at $86.00, all PS series fork sensors are IEC IP67-rated, have cULus approval and are CE, RoHs and REACH compliant. Harsh duty sensors are also IP69k rated.