Introdución
The LiftMaster 377LM Wireless Keypad provides secure and convenient access to your garage. It features Security+ rolling code technology for enhanced security and offers a temporary password option for guest access. This keypad operates wirelessly and is powered by a 9-volt battery. This manual provides instructions for setup, operation, maintenance, and troubleshooting.
Configuración e instalación
1. Instalación da batería
The LiftMaster 377LM Wireless Keypad requires one 9-volt battery for operation. The battery is typically included with the keypad.
- Open the battery compartment cover located at the bottom of the keypad.
- Insert the 9-volt battery, ensuring correct polarity.
- Pecha a tapa do compartimento da batería de forma segura.

This image shows the LiftMaster 377LM Wireless Keypad with its battery compartment open, revealing a 9-volt battery. The keypad's flip-up cover is also open, displaying programming instructions.
2. Montaxe do teclado
The keypad is designed for outdoor use and can be mounted near your garage door. It features a keyhole slot on the back for easy installation.
- Choose a suitable location on a wall or door frame, ensuring it is within range of your garage door opener.
- Mark the position for the mounting screw.
- Install a screw into the marked position, leaving a small portion exposed.
- Align the keyhole slot on the back of the keypad with the screw head and slide the keypad down to secure it.

The back of the LiftMaster 377LM Wireless Keypad, displaying the model number, FCC ID, and a keyhole for mounting.
3. Programación do teclado numérico
The 377LM keypad is compatible with garage door openers that operate on a 315 MHz frequency and have a purple learn button on the motor head.

A close-up of the LiftMaster 377LM Wireless Keypad with its protective cover flipped up, clearly showing the programming instructions printed on the inside for setting or changing the keyless entry PIN.
To Set or Change Keyless Entry PIN:
- Localiza o Aprende button on your garage door opener's motor head unit. Press and release the Aprende button. The learn indicator light will glow steadily for 30 seconds.
- Within 30 seconds, enter a four-digit PIN of your choice on the keypad. Then, press and hold ENTRAR.
- Soltar o ENTRAR button when the motor unit lights blink. If light bulbs are not installed, two clicks will be heard. This indicates the PIN has been learned.
To Set a Temporary PIN:
- Enter your primary user PIN onto the keypad.
- Preme e solta * button. The motor unit lights will blink three times.
- Enter the desired temporary PIN. Preme e solta ENTRAR. The motor unit lights will blink once.
- To set the validity period for the temporary PIN, choose one of the following options:
- To limit by number of openings: Enter the desired number of openings (e.g., '5' for 5 uses), then press *. The motor unit lights will blink once.
- To limit by number of hours: Enter the desired number of hours (e.g., '24' for 24 hours), then press #. The motor unit lights will blink once.
- The temporary PIN is now programmed.

This image presents the LiftMaster 377LM Wireless Keypad from the front, with the protective cover open to reveal the numeric keypad and the printed instructions for programming.
Instrucións de funcionamento
Abrir/pechar a porta da garaxe
- Enter your programmed 4-digit PIN on the keypad.
- Preme o ENTRAR botón.
- A porta da garaxe activarase (abrirase ou pecharase).
The keypad features a backlit display, making the numbers easy to see even in low-light conditions.
Using a Temporary PIN
If a temporary PIN has been set, guests or service personnel can use it to access the garage. The temporary PIN will function according to the programmed number of openings or hours.
- Enter the temporary 4-digit PIN on the keypad.
- Preme o ENTRAR botón.
- The garage door will activate.
One-Button Locking Feature
The keypad includes a one-button locking feature for added security. Consult your garage door opener's manual for specific instructions on enabling and using this feature, as its functionality may vary.
Mantemento
Substitución da batería
The keypad is powered by a 9-volt battery. When the battery is low, the keypad's performance may degrade, or it may stop functioning. Replace the battery as described in the 'Battery Installation' section.
Limpeza
Limpar a superficie do teclado cun pano suave eamp cloth. Avoid using abrasive cleaners or solvents, as these can damage the finish or electronic components. The keypad features a weatherproof flip-up protective cover to shield it from elements.
Resolución de problemas
- O teclado non responde:
- Check the 9-volt battery. Replace if necessary.
- Asegúrese de que o teclado numérico estea dentro do alcance do abridor da porta da garaxe.
- Verify that the keypad is correctly programmed to your garage door opener. Refer to the 'Programming the Keypad' section.
- Porta da garaxe que non abre/pecha:
- Confirm that the correct PIN is being entered.
- Check for any obstructions in the path of the garage door.
- Ensure the garage door opener itself is functioning correctly (e.g., check power supply, safety sensors).
- Keypad Buttons Feel Stiff or Unresponsive:
- Over time, buttons may wear out. If cleaning does not resolve the issue, the keypad may need replacement.
- Temporary PIN Not Working:
- Verify the temporary PIN was programmed correctly.
- Check if the temporary PIN has exceeded its programmed number of uses or hours.
Especificacións
| Característica | Especificación |
|---|---|
| Marca | LiftMaster |
| Modelo | 377 lm |
| Fonte de enerxía | 1 x 9-volt battery (included) |
| Frecuencia | 315 MHz |
| Dispositivos compatibles | Garage door openers with 315 MHz frequency and purple learn buttons on motor head |
| Dimensións (L x W x H) | 6 x 2.5 x 1 polgadas |
| Peso do elemento | 0.18 quilogramos |
Información da garantía
Specific warranty details for the LiftMaster 377LM Wireless Keypad are not provided in this document. For warranty coverage, terms, and conditions, please refer to the documentation included with your purchase or contact LiftMaster customer support directly.
Apoio
For further assistance, technical support, or to purchase replacement parts, please visit the official LiftMaster websitio ou póñase en contacto co seu departamento de atención ao cliente.
Podes atopar máis información en LiftMaster Store.