We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small black filament sensor module with cable attached

LONGER

LONGER Breakage Detection Sensor for LK1 LK4 LK4 Pro Alfawise U20 U30 U30 Pro 3D Printers Accessory

SKU CH-R0GH-0WWBN

Detects filament breakage on LK1, LK4, LK4 Pro, U20, U30 and U30 Pro printers to pause prints automatically

  • Prevents failed prints by detecting filament run-out
  • Works with LK1, LK4 and LK4 Pro models
  • Compatible with Alfawise U20, U30 and U30 Pro printers
  • Original sensor ensures reliable detection and easy replacement

Compatible Breakage Sensor for Longer LK Series

This original breakage detection sensor fits Longer LK1, LK4 and LK4 Pro printers. It also works with Alfawise U20, U30 and U30 Pro models. The part restores filament run-out detection so prints do not fail silently.

Low-Power Sensor Operation

The sensor draws minimal current from the printer control board during normal use. It adds no audible noise and generates no measurable heat. Installation simply reconnects the existing cable without extra power requirements.

How it compares

Measured against everything we stock in 3D Printing Accessories & Materials, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 94% of the 592 comparable items (median $31.99).

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the breakage detection sensor on my LK4 Pro, and which step is commonly missed?

Connect the sensor cable to the filament-runout port on the mainboard, route the filament through the sensor housing, then enable filament-runout detection in the printer firmware — the step often missed is turning the feature on in the menu after wiring.

What maintenance or replacement will the sensor need over time?

The sensor has no moving parts; keep the filament channel clear of dust and snipped filament tips, and replace the unit only if the lever fails to trigger or the connector pins become damaged.

More in 3D Printing Accessories & Materials

Similar items