--- product_id: 13494655 title: "Transmitter Solutions Firefly 310LID21KX2 Linear Mini-T Delta 3 DT-Set of 2" brand: "transmitter solutions" price: "207 zł" currency: PLN in_stock: true reviews_count: 8 url: https://www.desertcart.pl/products/13494655-transmitter-solutions-firefly-310lid21kx2-linear-mini-t-delta-3-dt store_origin: PL region: Poland --- # Compact size Battery powered Single channel Transmitter Solutions Firefly 310LID21KX2 Linear Mini-T Delta 3 DT-Set of 2 **Brand:** transmitter solutions **Price:** 207 zł **Availability:** ✅ In Stock ## Summary > 🔧 Elevate Your Control Game! ## Quick Answers - **What is this?** Transmitter Solutions Firefly 310LID21KX2 Linear Mini-T Delta 3 DT-Set of 2 by transmitter solutions - **How much does it cost?** 207 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/13494655-transmitter-solutions-firefly-310lid21kx2-linear-mini-t-delta-3-dt) ## Best For - transmitter solutions enthusiasts ## Why This Product - Trusted transmitter solutions brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Efficient Coding:** Features an 8 dip switch code system for easy setup. - • **Compact Dimensions:** Perfectly sized at 2 x 0.5 x 1.5 inches to fit anywhere. - • **Power Up with Ease:** Requires 2 CR2 batteries (not included) for reliable performance. - • **Seamless Compatibility:** Works effortlessly with Linear remotes and transmitters. - • **Ultra-Lightweight Design:** Weighs only 0.01 ounces for ultimate portability. ## Overview The Transmitter Solutions Firefly 310LID21KX2 Linear Mini-T Delta 3 DT-Set of 2 is a lightweight, compact solution designed for seamless compatibility with Linear remotes and transmitters. Featuring an efficient 8 dip switch code system, this battery-powered device ensures reliable performance in a sleek package. ## Description The single-channel keychain remote is powered by a long-lasting 12V battery and features an LED light to indicate operation and to aid with testing. To program your garage door opener, locate your eight dip switches, which can be found in the battery compartment, and simply set the switches in the identical position of the remote and receiver you wish to program it to. To ensure our customers receive the 310LID21K quickly, we typically ship the device within one business day. New Part#310LID21K3 Alternate Part#:CCF3101B Compatible with Linear remotes and transmitters Single channel 8 dip switch code system Compact keychain design ## Features - New Part#310LID21K3 - Alternate Part#:CCF3101B - Compatible with Linear remotes and transmitters - Single channel - 8 dip switch code system ## Technical Specifications | Specification | Value | |---------------|-------| | Part Number | 310LID21K | | Item Weight | 0.01 ounces | | Product Dimensions | 2 x 0.5 x 1.5 inches | | Item model number | 310LID21K | | Batteries | 2 CR2 batteries required. | | Is Discontinued By Manufacturer | No | | Power Source | Battery Powered | | Voltage | 12 Volts | | Item Package Quantity | 2 | | Batteries Included? | No | | Batteries Required? | No | | Battery Cell Type | Alkaline | ## Images ![Transmitter Solutions Firefly 310LID21KX2 Linear Mini-T Delta 3 DT-Set of 2 - Image 1](https://m.media-amazon.com/images/I/31vJTCem-1L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars I was not disappointed. *by T***Y on Reviewed in the United States on January 12, 2020* These remotes are super easy to program and extremely reliable. I read the reviews That mentioned reliability issues but I decided to give it a chance anyway. These are used for opening doors in a facility I work at. I use these remotes at least 20 times a day several days a week and they work reliably every time. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars nice unit *by E***K on Reviewed in the United States on December 7, 2019* good range, and that's with the economy battery it came with. I expect even better range when it gets replaced with a Duracell, eventually. easy to program ( flipping dip switches). BEST price I could find, saved a ton over some options. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Just what we needed!!! *by K***O on Reviewed in the United States on July 2, 2019* My townhouse HOA gave me 5he code and suggested it would be cheaper for me to buy my own 5han to replace the broken ones. What's even better is no more big clunky remote. This one is small, convenient, and effective. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/13494655-transmitter-solutions-firefly-310lid21kx2-linear-mini-t-delta-3-dt](https://www.desertcart.pl/products/13494655-transmitter-solutions-firefly-310lid21kx2-linear-mini-t-delta-3-dt) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-22*