--- product_id: 12104616 title: "Chamberlain Liftmaster 41A4373A Safety Sensors" price: "AR$181969" currency: ARS in_stock: true reviews_count: 13 url: https://www.desertcart.com.ar/products/12104616-chamberlain-liftmaster-41a4373a-safety-sensors store_origin: AR region: Argentina --- # Green LED indicator for real-time sensor status Corded-electric power, no batteries needed Direct splice-in wiring for seamless installation Chamberlain Liftmaster 41A4373A Safety Sensors **Price:** AR$181969 **Availability:** βœ… In Stock ## Summary > πŸšͺ Keep your vintage LiftMaster running like newβ€”safety and style, no compromises! ## Quick Answers - **What is this?** Chamberlain Liftmaster 41A4373A Safety Sensors - **How much does it cost?** AR$181969 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/12104616-chamberlain-liftmaster-41a4373a-safety-sensors) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Legacy Compatibility:** Perfect fit for LiftMaster & Chamberlain models from 1993 to late 1990s - β€’ **Visual Status Alerts:** Green LED lights provide instant confirmation of sensor functionality - β€’ **Cost-Effective Upgrade:** Replace aging sensors without the expense of a full garage door opener overhaul - β€’ **Effortless Installation:** Splice into existing wiringβ€”no brackets or complex tools required - β€’ **Reliable Infrared Safety:** Billion code series sensors ensure secure, interruption-free garage operation ## Overview The Chamberlain Liftmaster 41A4373A Safety Sensors are infrared replacement sensors designed specifically for LiftMaster and Chamberlain garage door openers manufactured between 1993 and the late 1990s. Featuring green LED indicators and a simple splice-in wiring design, these sensors restore reliable safety functionality without the need for new brackets or batteries. Ideal for professionals and homeowners looking to maintain classic garage systems with minimal hassle and maximum peace of mind. ## Description The 41A4373A Sensors are Replacement Safety Sensors (infrared eye) for 1993-late 1990's operators with the Safety Sensor option. Billion code series with the Green LED light***Not compatible with sensors that have Red LED lights ***If your sensors have a green light on one sensor and an orange light on the the other, you need the 41a5034 sensors.**** Review: Garage Door Works again... mine is an old Sears Craftsman unit. - These are great for replacements on my system... make sure they look like your old ones and you won't be disappointed. Pretty easy to install or replace also. Note that Chamberlain made some of the Sears Craftsman units in the past I believe. Review: Easy replacement for older Liftmaster sensors - I had to buy 2 sets of these sensors to replace ones that were manufactured in December 1996 and which began to operate very sporadically, especially when the temperature dropped below freezing. The behavior was that, sporadically, the green light on the receiving sensor would turn off, and then when I tried to close the door, the door would move for just a few inches and then bounce back up and the garage opener light would flash 10 times, which indicates a sensor issue. The failed sensors, identical to this product I purchased, worked flawlessly for about 28 years, which I suppose is reasonable, so I don't mind buying the same product again. Unfortunately, no matter where you buy these nowadays, they will be much more expensive than replacement sensors for more modern garage openers, perhaps because this model of sensor is so old that there are not many companies (maybe only Liftmaster itself?) producing them anymore, and therefore, minimal price competition. Still, these replacement sensors are cheaper than a whole new garage door opener unit which includes new sensors. So if your garage door opener motor is still working fine, but your sensors are not, then it could be worth the investment to just replace the sensors. ## Features - For garage door openers that currently have sensors installed - 41A4373A Sensors are compatible with LiftMaster and Chamberlain Brand from 1993 - late 1990's - Each sensor has a green light and a bolt that runs right through the center of each sensor - Designed to splice into your existing wires - Includes 1-sending unit, 1-receiving unit, Wire connectors, and instructions - no brackets ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0006N1RH6 | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #555,932 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #152 in Garage Door Sensors #123,261 in Hardware | | Color | Black | | Customer Reviews | 4.7 4.7 out of 5 stars (1,442) | | Date First Available | April 22, 2004 | | Is Discontinued By Manufacturer | No | | 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 | ## Images ![Chamberlain Liftmaster 41A4373A Safety Sensors - Image 1](https://m.media-amazon.com/images/I/81GMG9azvoL.jpg) ## Questions & Answers **Q: Are the 2 items , 1 receiver and 1 sender?** A: Yes there is 1 receiver and 1 emitter **Q: 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.** A: it is a pair that includes both a sending and a receiving sensor, which is all you need. good luck. **Q: How do you differentiate between the sending unit and the receiving unit?** A: It has it by the wiring coming in to the unit **Q: Will these work with a Liftmaster 1046 that came with no sensors? I saw indication the "Model 70" sensor might work.** A: No they won't time to replace your opener ## Customer Reviews ### ⭐⭐⭐⭐⭐ Garage Door Works again... mine is an old Sears Craftsman unit. *by Z***K on December 6, 2025* These are great for replacements on my system... make sure they look like your old ones and you won't be disappointed. Pretty easy to install or replace also. Note that Chamberlain made some of the Sears Craftsman units in the past I believe. ### ⭐⭐⭐⭐⭐ Easy replacement for older Liftmaster sensors *by F***. on January 20, 2025* I had to buy 2 sets of these sensors to replace ones that were manufactured in December 1996 and which began to operate very sporadically, especially when the temperature dropped below freezing. The behavior was that, sporadically, the green light on the receiving sensor would turn off, and then when I tried to close the door, the door would move for just a few inches and then bounce back up and the garage opener light would flash 10 times, which indicates a sensor issue. The failed sensors, identical to this product I purchased, worked flawlessly for about 28 years, which I suppose is reasonable, so I don't mind buying the same product again. Unfortunately, no matter where you buy these nowadays, they will be much more expensive than replacement sensors for more modern garage openers, perhaps because this model of sensor is so old that there are not many companies (maybe only Liftmaster itself?) producing them anymore, and therefore, minimal price competition. Still, these replacement sensors are cheaper than a whole new garage door opener unit which includes new sensors. So if your garage door opener motor is still working fine, but your sensors are not, then it could be worth the investment to just replace the sensors. ### ⭐⭐⭐⭐⭐ Works as Expected *by J***L on February 18, 2013* Fortunately, I was able to locate this replacement part on the seller`s site. Our +17 year old sensor stopped working as soon as the temperature dropped below 0 Celsius (32 Fahrenheit). The receiving eye`s green LED would go blank and attempts to close the garage door would cause it to pop open. As an interim solution we had to open the door, drive out, and then run back into the garage to close the garage door by pressing and holding down the main door button. Recommended extra tools: Small wire cutter/stripper Pliers Instructions were relatively simple, but you need to remember BOTH sensors must be replaced otherwise the system will not work. Look on the tail end of the sensors to see the identifying label. Below is what I encountered: I am not sure why Chamberlain/Liftmaster changed the product, but the original sensors used easily detachable plugs where the sensors had the receiving female end and the wall wire had the male plug. These newer replacement sensors only use wires. The wires coming from the wall have plugs that must be cut off and then spliced onto the new sensors' wire (Note: Follow the package's instructions and unplug the garage motor first). You don't want to strip down the wires too deeply in order to avoid having exposed copper wire remaining outside of the connector. When you put the wire into the connector take a look at the top of the connector to see how deep the copper wiring has gone. Troubleshooting experiences: I changed the Receiving Eye sensor only, but the system still did not work. This is when I discovered that you need to change both the Sending and Receiving sensor. My clumsiness or numbness from the cold may have cut too deeply into the copper wiring. After successfully installing and testing the garage door I tried to tape down the wiring. This caused the LED lights to lose connection, but after fiddling with the wires I realized that my I may have cut too deeply into the wires. I did a temporary fix by jiggling the wires until it worked again, then used electrical tape to keep squeezing the wires together in that position. Maybe when the weather warms up (or if my wires loosen again) I will re-do the wiring, but I ran out of those Wire connectors. Otherwise - this replacement part works as expected. Thanks ## Frequently Bought Together - Chamberlain Liftmaster 41A4373A Safety Sensors - Chamberlain LiftMaster 41A6569 Metal Wall Mount Garage Door Sensor Bracket, Silver, 1 Count --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/12104616-chamberlain-liftmaster-41a4373a-safety-sensors](https://www.desertcart.com.ar/products/12104616-chamberlain-liftmaster-41a4373a-safety-sensors) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-08-17*