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UL923 Child-Resistant Door Lock Information

As of April 1 2024, all countertop microwave ovens manufactured to be sold in the United States will be equipped with the UL923 Child-Resistant Door Lock function as a UL safety requirement.

UL923 requires two distinct actions to be taken to unlock the microwave door after a cooking cycle begins. The Child-Resistant Door Lock is prompted by the start of a cooking cycle. Once the cooking cycle is finished or paused, the unit will remain locked for a period of 30 minutes or until user presses the “UNLOCK” button. The specific “UNLOCK” button will vary by model. See below videos on how to operate your microwave depending on if you have a handle microwave oven, push button microwave oven, or convection microwave oven. (The specific  “Unlock”  button varies by model – see below to find the steps for your model number.)

Users have the option to disable this function if they so choose, by following the steps below, or scanning the QR code located inside the unit at any time to access the disabling steps. Once disabled, the lock will remain disabled (including when power is lost from the unit) until it is manually re-enabled again.

Steps to Disable Child-Resistant Door Lock Feature:

For Model Numbers below:

Z/SMC0760KB Z/SMC1162KS SMC1465KM microwave keypad
Z/SMC0760KW Z/SMC1169KS Z/SMC1469KS
Z/SMC0761KS SMC1450KS SMC1660KS
SMC0960KS Z/SMC1452KH Z/SMC1662KS
Z/SMC0962KS Z/SMC1461KB SMC2265KS
Z/SMC1161KB Z/SMC1461KW Z/SMC2266KS
Z/SMC1161KW Z/SMC1464KS

To disable / re-enable this feature, press 7-9-0 (hold 0 button for 3 seconds).

  • When disabled, “OFF” will be displayed with an audible sound.
  • When re-enabled, “Door” will be displayed with an audible sound.
microwave display off and door wording

NOTE: Once disabled, this feature will remain disabled even after a power outage.

How-To Disable and Enable Videos:

Push Button

Pull Door

Convection

For Model Numbers below:

SMC1585KB microwave keypad with higlighted zero key
SMC1585KS
SMC1585KW

To disable this feature, press “HELP/SETTINGS” -> “6” -> “STOP/CLEAR”.

To re-enable this feature, press “HELP/SETTINGS” -> “6” -> “START/TOUCH ON”.

  • When disabled, “DOOR LOCK OFF” will be displayed.
  • When re-enabled, “DOOR LOCK ON” will be displayed.
microwave display off microwave display on

NOTE: Once disabled, this feature will remain disabled even after a power outage.

  • If door lock is enabled and power to the unit is lost during a cooking cycle, the door will remain locked until power is restored.

How-To Disable and Enable Video:

FAQs:

Answer: This Microwave comes with a new child-resistant door lock safety feature. This prevents the unit from opening for a period of 30 minutes after a cooking cycle is completed or until a user presses the “Unlock” button.
NOTE: This feature can be disabled/re-enabled.
See “Steps to Disable Child-Resistant Door Lock” section above for the specific disabling steps for each model.

How to unlock door at the end of cooking cycle + solution

Push button:

Handle:

Convection:

How to unlock door door mid-cooking cycle + solution

Push button:

Handle:

Convection:

Answer: This microwave comes with a new child-resistant door lock safety feature. This prevents the unit from opening for a period of 30 minutes after a cooking cycle is completed or until a user presses the “Unlock” button.
NOTE: This feature can be disabled/re-enabled.
See “Steps to Disable Child-Resistant Door Lock” section above for the specific disabling steps for each model.

Push button:

Handle:

Convection:

Answer: This microwave comes with a new child-resistant door lock safety feature. This prevents the unit from opening for a period of 30 minutes after a cooking cycle is completed or until a user presses the “Unlock” button.
This feature can be disabled/re-enabled.
See “Steps to Disable Child-Resistant Door Lock” section above for the specific disabling steps for each model.

Push button:

Handle:

Convection:

Answer: The Child-Resistant Door Lock automatically re-engages after 10 seconds if the door was not opened after hitting the “Unlock” button. See “Steps to Disable Child-Resistant Door Lock” section above for the specific disabling steps for each model.

Push button:

Handle:

Convection:

Answer: After the completion of a cooking cycle, the unit will remain locked for a period of 30 minutes or until a user presses the “Unlock” button. See “Steps to Disable Child-Resistant Door Lock” section above for the specific disabling steps for each model.

Push button:

Handle:

Convection:

Answer: After the completion of a cooking cycle, the unit will remain locked for a period of 30 minutes or until a user presses the “Unlock” button. See “Steps to Disable Child-Resistant Door Lock” section above for the specific disabling steps for each model.

Answer: No, UL923 requires 2 physical actions to unlock the Child-Resistant Door Lock – pressing the “Unlock” button and opening the door. The Child-Resistant Door Lock can only be disabled/enabled by entering a code on the microwave oven. See “Steps to Disable Child-Resistant Door Lock” section above for the specific disabling steps for each model.