Is this compatible with new B1381 Chamberlain led opener?

Yes it is. I purchased the B1381 in Dec 2019 and it has the security shield symbol on the cover ( it is a shield with half light and half dark divided diagonally). It also has two lock connectors on the unit next to the up and down adjustment buttons close to where you connect the wires for the sensors and control panel and the WiFi learn button. Since it has two lock connectors if you want you can connect two of these locks, one on each side of your door.

Is this compatible with Chamberlain openers?

It is compatible with at least some some Chamberlain openers. Liftmaster and Chamberlain are the same company. To know if yours is compatible the two requirements are for it to have the shield symbol on the cover and for there to be two lock connectors on the unit next to the up and down adjustment buttons. I have the Chamberlain B1381 and it is compatible.

Wiil this work on the Chamberlin B970?

NO, this will not work with the B970

How far does the box protrude laterally from the track? (e.g. what is the length of the plastic box with the bolt retracted?)

The box protrudes 7.200 from track. when in locked position the bolt protrudes .800 from inside surface of track

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

841LM Automatic Garage Door Lock

Product ID: 392057387

Details

Material
Alloy Steel
Brand
LiftMaster
Colour
Black
Exterior Finish
Steel
Product Dimensions
21.6L x 11.4W

⚡12V power compatibility

📱Smartphone app monitoring

🔒Auto deadbolt lock

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

R$6092

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Brazil.

Secure transaction

Description

🔐 Lock in security, unlock your peace of mind.

DUAL SIDE DEFENSE - Add locks on both sides of your garage door for unbeatable wind and security resistance.
PERFECT COMPATIBILITY - Designed exclusively for select LiftMaster 12V openers—optimized performance guaranteed.
SEAMLESS AUTO LOCKING - Locks and unlocks automatically with your garage door opener for zero hassle.
SMART SECURITY ALERTS - Monitor your garage status anytime via the MyQ app—peace of mind in your pocket.
ROBUST ALLOY STEEL BUILD - Durable steel construction ensures long-lasting protection against intruders and storms.

The LiftMaster 841LM Automatic Garage Door Lock is a 12V alloy steel deadbolt that integrates seamlessly with select LiftMaster garage door openers (models 8550WL, 8587WL, 8360WL, 8500W). It automatically locks and unlocks with every door operation, offers smartphone monitoring via the MyQ app, and provides audible confirmation for secure closure. Ideal for enhancing garage security and storm resistance, it installs easily with screw-in mounting.

Specifications

ASIN	B074L9JQQR
Brand	LiftMaster
Brand Name	LiftMaster
Colour	Black
Customer Reviews	4.3 out of 5 stars 211 Reviews
Exterior Finish	Steel
Global Trade Identification Number	00012381185740
Installation Type	Screw-In
Item Dimensions L x W x H	21.6L x 11.4W x 10.9H Centimeters
Manufacturer	Liftmaster/Chamberlain
Material	Alloy Steel
Material Type	Alloy Steel
Product Dimensions	21.6L x 11.4W x 10.9H Centimeters
Recommended Uses For Product	Securing and locking/unlocking a garage door in conjunction with a compatible garage door opener
UPC	757347279797 012381185740
Unit Count	1.0 Count

Reviews

M**E

Awesome Product

2.04.2020

S**T

As described. Works well

11.02.2021

P**E

Safe and sound

30.06.2019

M**T

12 volt or 120 volt. Make sure you have right one.

16.11.2025

C**S

Good device to have for that added security.

15.07.2018

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

R$6092

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Brazil.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

View all Trustpilot reviews