This is a Festo SRBC Series Sensor Box . It's part number is SRBC-CA3-YR90-N-1-P-C2P20. It comes as pictured without any additional parts or accessories.

Specifications

• Manufacturer: Festo
• Part Number: SRBC-CA3-YR90-N-1-P-C2P20
• Series: SRBC 
• Type Code: SRBC-CA3-YR90-N-1-P-C2P20
• Type: Limit Switch Attachment
• Design: Sensor Box
• Mechanical Interface: Mounting Adapter, Hole Pattern 30X80 mm
• Display Type: Position Indicator Yellow/Red
• Measuring Range: 0 to 90 Degrees C
• Sensor Principle: Proximity Sensors, Inductive
• Nominal Operating Volts: 24 VDC
• Electrical Output: PNP
• Electrical Connection: Screw Terminal
• Cable Connector: M20x1.5, Polymer