Are the 2 items , 1 receiver and 1 sender?

Yes there is 1 receiver and 1 emitter

I need to replace two garage door sensors. Is this the sending or receiving sensor? Is this one pair of both receiving and sending sensor? Thanks.

it is a pair that includes both a sending and a receiving sensor, which is all you need. good luck.

How do you differentiate between the sending unit and the receiving unit?

It has it by the wiring coming in to the unit

Will these work with a Liftmaster 1046 that came with no sensors? I saw indication the "Model 70" sensor might work.

No they won't time to replace your opener

Chamberlain Liftmaster 41a4373a Safety Sensors

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

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AR$189746

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚪 Keep your garage secure with vintage tech that just works!

DURABLE DESIGN - Robust bolt-through sensor construction built to last through years of garage door cycles and weather exposure.
TRUSTED PERFORMANCE - Join over 1,400 satisfied users with a 4.7-star rating—reliable safety you can count on every day.
SEAMLESS COMPATIBILITY - Specifically engineered for LiftMaster & Chamberlain garage door openers from 1993 to late 1990s—perfect fit, zero guesswork.
INSTANT VISUAL FEEDBACK - Green LED indicator ensures you know your sensors are active and working—no more guessing games.
PLUG PLAY INSTALLATION - Includes wire connectors and clear instructions for a hassle-free splice into your existing wiring—DIY friendly.

The Chamberlain Liftmaster 41A4373A Safety Sensors are infrared replacement sensors designed for garage door openers from 1993 to the late 1990s. Featuring green LED indicators and bolt-through sensor design, these sensors splice easily into existing wiring and come with wire connectors and instructions. Compatible exclusively with LiftMaster and Chamberlain models with green LED sensors, they provide reliable, long-lasting safety performance backed by strong customer satisfaction.

Specifications

ASIN	B0006N1RH6
Best Sellers Rank	#528,985 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #154 in Garage Door Sensors #116,884 in Hardware
Color	Black
Customer Reviews	4.7 4.7 out of 5 stars (1,440)
Date First Available	April 22, 2004
Item Package Quantity	1
Item Weight	4 ounces
Item model number	41A473A
Manufacturer	Liftmaster
Number Of Pieces	2
Package Dimensions	6.02 x 3.94 x 2.32 inches
Part Number	41A473A
Power Source	Corded-electric

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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.

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TrustScore 4.5 | 7,300+ reviews

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The delivery time was excellent, and the packaging was secure.

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The product exactly matches the description. Very satisfied with my purchase.

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AR$189746

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered 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 Argentina.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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Fantastic experience overall. Will recommend to friends and family.

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