Found 5 alternatives for PTA1125EX by Celduc. Magnetic Sensors Position Proximity Speed Modules — Cylinder, Wire Leads.
BLUE 140VAC/0.5A TUBULAR PROXIMI
BLACK MOULDED 140VAC/0.5A PROXIM
PROX SEN 53071820 1NF/60W/400VAC
PROXIMITY SENSOR 1NO/2 WIRES WIT
PROXIMITY SENSOR 1NO/10W/100VDC/