EE-SX974-C1 omron sensor
Key Specifications

• Sensor Type: Slot-type photomicrosensor (close-mounting shape)
• Sensing Distance / Slot Width: 5 mm 
• Light Source: Infrared LED (peak wavelength 940 nm) with an orange indicator LED 
• Output Type: NPN transistor output 
• Operation Mode: Dark-ON / Light-ON (selectable)
• Supply Voltage: 5 to 24 VDC ±10% 
• Current Consumption: 21 mA max
• Connection Method: 4-pole connector type 
• Housing Material: PBT thermoplastic polymer (IP50 rated
• Dimensions (W × H × D): 12.8 mm × 15.5 mm × 21.7 mm (or ~21.7 × 15.5 × 13.4 mm depending on orientation/mounting profile)