what is the number of the battery for this?

It requires one : 3V 2032 battery.

Why doesn’t my remote close the garage door? Only causes the light to flash.

Here are some questions that need to be addressed: Did you order the proper transmitter for the particular color of synch light on the back of your opener? Did you properly synch your transmitter with the garage door opener? Do you have something blocking the sensors at the bottom of your garage door?

Does it comes with batteries?

As I remember, the remote comes with a small disc battery (CR2032). If you some day need to replace the battery, Google - Liftmaster garage door remote battery replacement.

Think I have incorrect replacement remotes can you help me? Thanks

On the back or side of the motor there is a light could be red, orange or green or some other color. When you order the remote they list which color the remote is made to work with. You just have to match the color then easy to program.

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2 Garage Door Remote Opener for Liftmaster 373LM (2005-Current) Purple Button - Security+ 315 MHz

2 Garage Door Remote Opener for Liftmaster 373LM (2005-Current) Purple Button - Security+ 315 MHz

Product ID: 165099919

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Details

Brand
GDR PRO
Special Feature
Ergonomic
Color
Two
Max Number of Supported Devices
3
Compatible Devices
Garage Door

🎯Universal Purple Button Compatibility

📶315 MHz Secure Frequency

🔒Security+ Encryption

Description

🔑 Unlock convenience and security with every press!

ERGONOMIC PURPLE BUTTON - Designed for comfort and quick access, making every press satisfying.
EFFORTLESS UNIVERSAL FIT - Seamlessly replaces multiple Liftmaster and compatible remotes with purple learn button tech.
STEP BY STEP PROGRAMMING - Clear, easy instructions get you connected in minutes—no tech headaches.
ENHANCED SECURITY 315 M HZ - Advanced encrypted signal keeps your garage access safe and private.
READY TO USE OUT OF THE BOX - Includes lithium metal battery so you’re powered up and ready to roll immediately.

This dual-pack replacement garage door remote by TCK TECH operates on a secure 315 MHz frequency with Security+ encryption, compatible with Liftmaster, Chamberlain, Craftsman, and Raynor models featuring the purple learn button (2005-current). It includes lithium metal batteries and step-by-step programming instructions for quick, ergonomic, and reliable garage access.

Specifications

Manufacturer	TCK TECH
Part Number	TCKG0396
Item Weight	1 ounces
Package Dimensions	6.54 x 4.41 x 1.54 inches
Item model number	TCKG0396
Batteries	1 Lithium Metal batteries required. (included)
Color	Purple
Item Package Quantity	1
Special Features	Ergonomic
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Lithium Metal
Description Pile	Lithium

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