ultrasonic distance detector
BPK Series Square Long Range Diffuse Photoelectric Sensor
M18 Flush Inductive Proximity Sensor – Analog Output, 8mm, DC 10-30V, IP67
Small Square Diffuse Photoelectric Sensor BPZ L-ON/D-ON
M30 Non-Flush Inductive Proximity Sensor – Analog Output 0-10V/4-20mA, 15mm Max Range, DC 10-30V
M30 All-Metal Non-Flush Analog Proximity Sensor – 15mm Continuous Detection (0-14.6mm Reliable), Stainless Body & Face, 4-20mA / 0-10V Output, DC 10-30V