--- product_id: 463004779 title: "Orientek T15M Optical Light Source SM 1310/1550nm Mini Fiber Optic Power Meter Fiber Optic Light Source" brand: "orientek" price: "€ 301.01" currency: EUR in_stock: true reviews_count: 5 category: "Orientek" url: https://www.desertcart.hr/products/463004779-orientek-t15m-optical-light-source-sm-1310-1550nm-mini-fiber store_origin: HR region: Croatia --- # Output Power: -5dBm Connector: SC+ 2.5mm Wavelength: 1310/1550nm Orientek T15M Optical Light Source SM 1310/1550nm Mini Fiber Optic Power Meter Fiber Optic Light Source **Brand:** orientek **Price:** € 301.01 **Availability:** ✅ In Stock ## Summary > 🔦 Illuminate Your Fiber Optic Journey! ## Quick Answers - **What is this?** Orientek T15M Optical Light Source SM 1310/1550nm Mini Fiber Optic Power Meter Fiber Optic Light Source by orientek - **How much does it cost?** € 301.01 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/463004779-orientek-t15m-optical-light-source-sm-1310-1550nm-mini-fiber) ## Best For - orientek enthusiasts ## Why This Product - Trusted orientek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Design:** Crafted with high-quality materials, this light source is built to withstand the rigors of fieldwork. - • **Compact & Lightweight:** Weighing only 0.28g, it's the perfect portable solution for on-the-go professionals. - • **Precision Wavelengths:** Experience dual wavelengths of 1310/1550nm for versatile applications. - • **Universal Connectivity:** Equipped with SC+ 2.5mm connector, with optional LC compatibility for seamless integration. - • **Battery Powered Convenience:** Enjoy the freedom of battery operation, ensuring you’re always ready to test. ## Overview The Orientek T15M Optical Light Source is a compact and efficient tool designed for fiber optic testing, featuring dual wavelengths of 1310/1550nm and a typical output power of -5dBm. With its lightweight design and universal SC+ connector, it’s perfect for professionals seeking reliability and portability in their optical communication tasks. ## Description Orientek T15MS Optical Light Source ① Wavelength : 1310/1550nm ② Typical Output Power : -5dBm ③ Output Stability : ±0.05dB/15mins; ±0.1dB/ 8hours ④ Modulation Frequencies : CW,270Hz,1KHz,2KHz ⑤ Connector : SC+ 2.5mm universal (1.25mm for LC is Optional) ⑥ Power Supply : Alkaline Battery(3 AA 1.5V ) Review: Smooth functionality, accurate, great value, very easy to use, durable Review: Are you a technician for a certain telephone and telegraph company in America? Are you tired of begging your supervisor for test overrides, or driving all the way to the PFP to get a passing test? Boy, do I have a solution for you! Joking aside (I do not condone falsifying company documents 👀), this device does what it’s supposed to do very well for the price. I got it primarily to generate 2khz tone on a fiber, which I detect with the Orientek TFI-40 wand. Furthest I’ve tested it is 6,000ft, and it works great. If you want something that generates light for legitimate purposes 👀 or something that generates 2khz tone for situations where you can’t use a laser for fiber identification, this is your best bet. ## Features - Wavelength : 1310/1550nm - Typical Output Power : -5dBm - Connector : SC+ 2.5mm universal (1.25mm for LC is Optional) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07LBMV72B | | ASIN | B07LBMV72B | | Brand Name | ORIENTEK | | Color | blue and black | | Customer Reviews | 3.8 3.8 out of 5 stars (20) | | Customer reviews | 3.8 3.8 out of 5 stars (20) | | Date First Available | 6 August 2022 | | Is Discontinued By Manufacturer | No | | Item Weight | 0.01 Ounces | | Item model number | TLS-25M-RL | | Manufacturer | Nanjing Orientek Optical Communication Limited | | Manufacturer | Nanjing Orientek Optical Communication Limited | | Model | TLS-25M-RL | | Package Dimensions | 18.59 x 9.8 x 5.21 cm; 0.28 g | | Power Source | Battery Powered | | Style Name | T15M Light Source | ## Product Details - **Brand:** ORIENTEK - **Colour:** blue and black - **Item weight:** 0.01 Ounces - **Power source:** Battery Powered - **Style:** T15M Light Source ## Images ![Orientek T15M Optical Light Source SM 1310/1550nm Mini Fiber Optic Power Meter Fiber Optic Light Source - Image 1](https://m.media-amazon.com/images/I/51ihY-ylGvL.jpg) ![Orientek T15M Optical Light Source SM 1310/1550nm Mini Fiber Optic Power Meter Fiber Optic Light Source - Image 2](https://m.media-amazon.com/images/I/611zabTMPZL.jpg) ![Orientek T15M Optical Light Source SM 1310/1550nm Mini Fiber Optic Power Meter Fiber Optic Light Source - Image 3](https://m.media-amazon.com/images/I/61yqhOW6VmL.jpg) ![Orientek T15M Optical Light Source SM 1310/1550nm Mini Fiber Optic Power Meter Fiber Optic Light Source - Image 4](https://m.media-amazon.com/images/I/613wDTeMpwL.jpg) ![Orientek T15M Optical Light Source SM 1310/1550nm Mini Fiber Optic Power Meter Fiber Optic Light Source - Image 5](https://m.media-amazon.com/images/I/51aUNJLaeZL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by G***R on 15 April 2026* Smooth functionality, accurate, great value, very easy to use, durable ### ⭐⭐⭐⭐⭐ Review *by Y***N on 3 November 2024* Are you a technician for a certain telephone and telegraph company in America? Are you tired of begging your supervisor for test overrides, or driving all the way to the PFP to get a passing test? Boy, do I have a solution for you! Joking aside (I do not condone falsifying company documents 👀), this device does what it’s supposed to do very well for the price. I got it primarily to generate 2khz tone on a fiber, which I detect with the Orientek TFI-40 wand. Furthest I’ve tested it is 6,000ft, and it works great. If you want something that generates light for legitimate purposes 👀 or something that generates 2khz tone for situations where you can’t use a laser for fiber identification, this is your best bet. ### ⭐⭐⭐ Review *by P***R on 23 February 2024* Somebody had to be among the first people to buy this Optical Light Source (OLS) and his companion the Orientek T25M Optical Power Meter (OPM). For the money, I figured I'd give the pair a try. I don't have other optical test equipment to test these against, so this review is really for the pair of these devices. Let me start by saying that I grabbed some random LC/UPC to "2.5mm universal Interface" converters from here on Amazon, and I used those for all my testing. They didn't properly "lock" on to either unit (the OPM has threads for an adapter, the OLS does not). The one-page OLS spec (on the Orientek web site) says the generated power is -5dbm. I plugged a 3m single mode fiber LC to LC fiber into the adapters, turned on the OPM and OLS, set them both to 1550nm, and... behold... a reading that varied from between -4.something to -5.something -- I say ".something" because the value I got bounced around quite a bit. If I unplug the fiber from one end, the reading on the OPM say "LO" -- So, SORT of good... though how we could get -4dbm from a light source that's rated at -5dbm is certainly a good question. But, let's just go with it. Here's where it gets more fun: I changed the OLS from 1550nm to 1310nm. But I left the OPM on 1550nm. I got only a slightly different power reading on the OPM (-5.something dbm). Hmmmm.... Then I switched the OPM to 1625nm. I still got a very similar power reading (again, about -5.something dbm). So, we know that either the OPM isn't very selective or the OLS isn't very specific. I added a modulated signal at the OLS, and the OPM detected the proper modulation each time and indicated a different (sometimes lower, sometimes higher) power level than with no modulation applied. I measured other lengths of SM optical fiber (up to 30m... I don't have anything longer to try) and got pretty much the same readings, which is as it should be given that the insertion loss for the 30m fiber cable I have is spec'ed at <= 0.15dbm (if you can believe the package, but that's a whole other story). Finally, I measured a pair of fibers coupled together with and LC/UPC F to LC/UPC F fiber coupler. I didn't see any insertion loss, which (again) is reasonable given that the couplers are spec'ed at 0.2dB IL. In summary, what can I say about these devices? Well, they're obviously not precision instruments. I'd say they're good enough to detect massive issues (like, "Did I break that fiber or the connector on it?")... They're good enough to allow you to identify individual fibers if you have a bundle. They're good enough for home use (which is why I bought them). I'm going to keep them, but there are lots of little, niggling, issues that result in my not being thrilled with my purchase. ## Frequently Bought Together - Orientek T15M Optical Light Source SM 1310/1550nm Mini Fiber Optic Power Meter Fiber Optic Light Source - ORIENTEK TFI-40 Optical Fiber Identifier All-in-one Chuck Live with 10mw VFL 800nm-1700nm Fiber Detector Traffic Identifier OFI - Jonard Tools JIC-375 Three Hole Fiber Optic Stripper with TPR Handle, 6" Length, Оne Расk --- ## 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.hr/products/463004779-orientek-t15m-optical-light-source-sm-1310-1550nm-mini-fiber](https://www.desertcart.hr/products/463004779-orientek-t15m-optical-light-source-sm-1310-1550nm-mini-fiber) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-25*