Bambu Lab Door Sensor for P2S (FAC161)

Original Bambu Lab Door Sensor designed specifically for the Bambu Lab P2S 3D printer. It is a small electronic board (PCB) mounted inside the front column of the printer that accurately detects the open or closed state of the glass front door.

Thanks to this sensor, the P2S printer can react to changes in door status, report the correct state in the interface, and contribute to a safer and more controlled printing process.

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Main features

• Original Bambu Lab spare part – full compatibility and reliability.
• Designed for Bambu Lab P2S – exactly matches the design of the P2 series.
• Open / closed door detection – the sensor monitors the status of the printer’s front glass door.
• Small PCB board – mounted inside the front column of the printer.
• Safer operation – allows the printer to respond correctly to changes in door status.
• Easy installation – supplied with a ST2×3,5 screw for fastening.
• Compact package dimensions – suitable for service stock or quick replacement at the customer’s site.

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Technical parameters

Parameter	Value
Manufacturer	Bambu Lab
Manufacturer designation	FAC161
Product code	BL‑FAC161
Name	Door Sensor – P2S
Designed for 3D printers	Bambu Lab P2S (P2 series)
Product type	Mainboard / PCB (door sensor)
Materials	Plastic, PCBA
Color	Black
Package – weight	approx. 0,0024 kg
Package – dimensions	approx. 80 × 120 × 10 mm

The listed dimensions and weight refer to the packaging according to the official Bambu Lab store.

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Package contents

• 1× Bambu Lab Door Sensor – P2S
• 1× ST2×3,5 screw for mounting

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Installation and use

• The sensor is mounted on the inner side of the front column of the P2S printer.
• For detailed instructions, we recommend following the official manual/installation guide in the Bambu Lab Wiki (the manufacturer provides an illustrated guide for this part).
• After replacing or installing the sensor, check in the printer interface whether the door status (open/closed) is displayed correctly.

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Who this product is suitable for

• Service technicians and resellers of Bambu Lab 3D printers.
• P2S users who need to replace a damaged or non-functional door sensor.
• Operators of print farms who want to keep a spare part in stock for quick replacement and to minimize printer downtime.

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Benefits for your P2S printer

• Restores correct door status reporting in the system.
• Supports a safer and more controlled printing environment.
• The original part ensures long service life and reliable function compared to non-original alternatives.

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Note

This product is compatible only with the P2 series (P2S). For other Bambu Lab models (e.g. P1, X1, etc.), you must use the corresponding type of sensor or spare part according to the manufacturer’s specification.

Key features:

• Original Bambu Lab door sensor for the P2S printer
• Reliably detects whether the front glass door is open or closed
• Small PCB board mounted inside the front column of the printer
• Ensures safer operation and accurate status monitoring during printing
• Compatible with the P2 series (P2S) according to the manufacturer’s specification
• Includes a ST2×3,5 mounting screw for easy installation
• Compact and lightweight packaging suitable as a service spare part