--- product_id: 1168012 title: "TD-20U Indoor/Outdoor Wireless Infrared Transmitter" brand: "optex" price: "€ 120.21" currency: EUR in_stock: true reviews_count: 11 url: https://www.desertcart.it/products/1168012-td-20u-indoor-outdoor-wireless-infrared-transmitter store_origin: IT region: Italy --- # 2000 ft range IP54 weatherproof Passive infrared detection TD-20U Indoor/Outdoor Wireless Infrared Transmitter **Brand:** optex **Price:** € 120.21 **Availability:** βœ… In Stock ## Summary > πŸ”’ Secure Your Space, Anytime, Anywhere! ## Quick Answers - **What is this?** TD-20U Indoor/Outdoor Wireless Infrared Transmitter by optex - **How much does it cost?** € 120.21 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/1168012-td-20u-indoor-outdoor-wireless-infrared-transmitter) ## Best For - optex enthusiasts ## Why This Product - Trusted optex brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Peace of Mind:** Stay alert with passive infrared motion detection, keeping your space secure. - β€’ **Unmatched Range:** Experience a remarkable 2000 ft transmission range, ensuring seamless connectivity. - β€’ **Effortless Integration:** Easily connects with compatible receivers for a hassle-free setup. - β€’ **All-Weather Reliability:** With an IP54 rating, this transmitter thrives in both indoor and outdoor environments. - β€’ **Smart Detection Patterns:** Choose between a 50 ft long-range or a 17 ft fan detection pattern to suit your needs. ## Overview The OptexTD-20U Indoor/Outdoor Wireless Infrared Transmitter offers an impressive 2000 ft transmission range and features passive infrared technology for reliable motion detection. Its weatherproof housing (IP54 rating) ensures durability in various environments, while selectable detection patterns provide flexibility for your security needs. ## Description OptexTD-20U Indoor/Outdoor Wireless Infrared Transmitter ## Features - 2000 ft. transmission range, line of sight - Uses passive infrared to detect motion and send RF signals to receivers - Weather proof housing (IP54 rating) for both indoor and outdoor use - Selectable 50 ft. Long Range or 17 ft. Fan (Wide) detection pattern ## Images ![TD-20U Indoor/Outdoor Wireless Infrared Transmitter - Image 1](https://m.media-amazon.com/images/I/511K-Hjn2TL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great stuff, easy to use and operate! *by S***N on Reviewed in the United States on February 11, 2023* We have had this brand/system for years, then one sensor was accidentally damaged beyond repair. We bought a replacement unit, not sure if new would be compatible with the old. It did! Followed instructions and β€œtaught” it to recognize old/main system. In fact, it was so easy that we purchased another one to expand the surveilled area. We love it! ### ⭐⭐⭐ Decent, does what it says, but not perfect *by L*** on Reviewed in the United States on December 22, 2022* I bought this to use in conjunction with another previously installed unit. As others mentioned, this thing seems to attract ants and will yield it non-functional until you clean them out. It helps to pour concrete/Quick-crete around the base of the post to minimize dirt at the base to minimize the ant situation. Getting it adjusted takes some time to set accurately, otherwise it will pick up unwanted movement when not aimed just exact. The whole "horizonal/vertical" set up is a NIGHTMARE.Sensitive enough to pick up any slight movement, but I've gotten used to hearing it go off all night - armadillos, birds, even butterflies will set it off. Aimed the wrong way, water drops from my sprinkler will set it off. Again, happens so much, I'm numb to it now... Forget trying to set up a different ring tone. I eventually got it set to ring a different tone from the previous bell so I'll know the difference between which driveway is being activated. However, it wasn't a straightforward, well explained process... very hit or miss and I got it to work by accident, but still wasn't able to select the tone I wanted. I only purchased this since I already had one in already installed, otherwise, I would have opted to switch out the entire unit if cost wasn't a concern. ### ⭐⭐⭐⭐⭐ Could be a possible life saver *by J***. on Reviewed in the United States on August 19, 2020* I use a number of these around the outside of my house to sense motion. They are powered by a 9 volt battery, which typically lasts from 9-12 months. I mount the TD-20U low to the ground on a plastic stake and use camouflage tape on them to hide them. I link them to an Optex RC-20U, and use it’s contact closure to feed an X10 Powerflash Interface, which is used in an ISY994i program. My floodlights and coach lights are on Insteon switches, and after dark when any motion is detected by an Optex RC-20U all these lights turn on. The sensors detect when deer, skunks or armadillos are in the yard. I also have one sensor pointed up the driveway, so if I return home after dark the whole exterior of my house is lit up.The Optex TD-20U also saved me from a possible home invasion. I have video surveillance cameras around the outside of my house, and they recorded the incident. At 1:55 AM, in July of 2019, a silver Impala drove into my driveway, and positioned the car next to my house. There were multiple men in this car, and their car windows were down. Within a few seconds of them passing the Optex sensor all my outside lights turned on. They were pretty well lit up. My cameras record video and audio. On the video one of the guys in the car said, β€œHey, the lights came on”. The driver of that vehicle put it in reverse, and got out of there pretty quickly. Quite possibly the lights coming on saved the lives of my wife and I. I have found these to be a very good product. I expect to always use these to guard my property. --- ## 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.it/products/1168012-td-20u-indoor-outdoor-wireless-infrared-transmitter](https://www.desertcart.it/products/1168012-td-20u-indoor-outdoor-wireless-infrared-transmitter) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-16*