LiftMaster K23-19380 Reset Switch for LA400 and LA412 Swing Gate Operators
The LiftMaster K23-19380 reset switch is a small but important control component used in select LiftMaster swing gate operator assemblies. It gives the operator a serviceable reset point after certain faults, interruptions, or control events. On LA400 and LA412 style gate operators, a damaged or failed reset switch can create problems that look like control-board or power issues, especially if the switch is physically broken, corroded, or not making reliable contact. This part should be selected by the exact part number and switch configuration because other LiftMaster reset switches may look similar but fit different operators, use different mounting hardware, or connect differently in the control circuit.
Features & Specifications
| Manufacturer | LiftMaster |
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| Product Type | Reset Switch |
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| Part Number | K23-19380 |
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| Application | Swing gate operator reset/control circuit |
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| Compatible Operator Type | Select LiftMaster swing gate operators |
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| Common Model References | LA400, LA412 |
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| Notes | Verify switch mounting and wiring before ordering |
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Compatible With
Verified and commonly associated with LiftMaster LA400 and LA412 swing gate operator applications. May be used with select legacy LiftMaster / Elite swing gate motor assemblies where the parts diagram specifies K23-19380.
Also Known As / Related Part Numbers
K23-19380, LM-K23-19380, CB-2 K23-19380, reset switch LA400, reset switch LA412. Different reset switch families include K23-34815 and K23-34815-1 for SL-series slide gate operators.
Technician Note
Do not confuse this LA-series reset switch with reset switches used on SL575, SL585, or SL595 slide gate operators.
Important Ordering Warnings
If a reset switch repeatedly trips or the gate will not reset, do not bypass safety or control circuits. Diagnose the underlying fault.
Before Ordering
- Confirm the operator is an LA400, LA412, or diagram-supported swing gate operator.
- Compare the switch body, mounting style, and wire connections.
- Check for water intrusion, corrosion, or physical damage.
- Review the operator fault condition before replacing only the switch.
- Do not bypass the reset circuit.
Professional Advisory
Electrical parts should be installed with power disconnected and the operator secured against movement. For line-voltage wiring, transformer replacement, switch wiring, or unsafe gate movement, use a qualified gate technician.
Product Questions & Answers
What operators commonly use K23-19380?
K23-19380 is commonly associated with LiftMaster LA400 and LA412 swing gate operators.
Is this the same reset switch used on SL585 or SL595 operators?
No. SL-series slide gate operators commonly use different reset switch part numbers.
What symptoms can a bad reset switch cause?
A damaged reset switch may prevent proper reset operation, cause intermittent control problems, or make a fault condition harder to clear.
Can I bypass this switch?
No. The reset/control circuit should not be bypassed. Diagnose and replace the correct part instead.
What should I compare before ordering?
Compare the original part number, switch style, mounting method, wiring, and operator parts diagram.
