--- product_id: 585524817 title: "SeeSii TinySA Ultra+ ZS406 Spectrum Analyzer with 50W Attenuator, 4.0 Inch 100kHz to 5.4GHz Handheld Tiny Frequency Analyzer with 32Gb Card,100kHz to 800MHz MF/HF/VHF UHF Input, 2025 Upgraded" brand: "seesii" price: "$421.57" currency: USD in_stock: true reviews_count: 8 category: "Seesii" url: https://www.desertcart.us/products/585524817-seesii-tinysa-ultra-zs406-spectrum-analyzer-with-50w-attenuator-4 store_origin: US region: United States of America --- # Built-in 32GB microSD for direct data recording 100kHz-5.4GHz ultra-wide range 5000mAh battery with 3-hour fast charge SeeSii TinySA Ultra+ ZS406 Spectrum Analyzer with 50W Attenuator, 4.0 Inch 100kHz to 5.4GHz Handheld Tiny Frequency Analyzer with 32Gb Card,100kHz to 800MHz MF/HF/VHF UHF Input, 2025 Upgraded **Brand:** seesii **Price:** $421.57 **Availability:** ✅ In Stock ## Summary > 📡 Unlock the spectrum’s secrets anytime, anywhere — be the signal whisperer! ## Quick Answers - **What is this?** SeeSii TinySA Ultra+ ZS406 Spectrum Analyzer with 50W Attenuator, 4.0 Inch 100kHz to 5.4GHz Handheld Tiny Frequency Analyzer with 32Gb Card,100kHz to 800MHz MF/HF/VHF UHF Input, 2025 Upgraded by seesii - **How much does it cost?** $421.57 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/585524817-seesii-tinysa-ultra-zs406-spectrum-analyzer-with-50w-attenuator-4) ## Best For - seesii enthusiasts ## Why This Product - Trusted seesii brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual-Mode Powerhouse:** Switch between spectrum analyzer and signal generator modes, with sine, square, and dual-tone outputs up to 4.4GHz. - • **Plug & Play PC Control:** USB connectivity with automatic driver installation and Tinysa-APP support makes remote control and data transfer a breeze. - • **Ultra-Wide Frequency Mastery:** Covering 100kHz to 5.4GHz, this handheld analyzer unlocks insights from MF to UHF bands with precision. - • **Seamless Data Capture & Sharing:** Integrated 32GB microSD lets you record and export measurement data effortlessly—never lose a critical signal snapshot. - • **Next-Level Portability & Battery Life:** Lightweight design paired with a robust 5000mAh battery ensures you stay powered through long field sessions. ## Overview The SeeSii TinySA Ultra+ ZS406 is a cutting-edge handheld spectrum analyzer featuring a 4.0-inch touchscreen, ultra-wide 100kHz to 5.4GHz frequency range, and a built-in 32GB microSD card for direct data recording. It doubles as a versatile signal generator with multiple waveform outputs and offers PC connectivity for advanced control. Designed for professionals on the go, it boasts a long-lasting 5000mAh battery with fast charging, enhanced ESD protection, and a compact form factor, making high-performance spectrum analysis accessible without the premium price tag. ## Description SeeSii TinySA Ultra+ ZS406 Spectrum Analyzer with 50W Attenuator, 4.0 Inch 100kHz to 5.4GHz Handheld Tiny Frequency Analyzer with 32Gb Card,100kHz to 800MHz MF/HF/VHF UHF Input, 2025 Upgraded: desertcart.com: Industrial & Scientific Review: Upgrade of the Vintage TinySA Spectrum Analyzer - I'm still in the process of evaluating the Ultra's capabilities. But, a few initial thoughts. A person that is used the original TinySA can operate and calibrate the Ultra out of the box. I note that an actual operation manual specifically for the Ultra seems to be unavailable, so a person new to the TinySA will have to look through the original TinySA manual and gather bits and pieces on TinySA website for the additional features of the Ultra. They refer to groups.io for a knowledge base and I have experienced mixed results. The waterfall of the Ultra seems not as clear and distinct as the original TinySA. On the bench, the Ultra is reasonable for most spectrum analyzer applications, but not the precision of commercial equipment. In summary, a reasonable value for cost and small enough to fit in your hand, a useful tool in my tool box for sure. Cheers! Review: Handy Tool - Works as stated. Good build quality. ## Features - SeeSii Upgraded TinySA Ultra:This New Version V0.4.6.1 Spectrum Analyzer is developed by Hugen, with 4.0 inch 480 x 320 large touchscreen display, 100kHz to 5.4GHz widely measure range, with the new ESD protection function, the product has a higher anti-static level and a longer service life, and built-in 32Gb micro SD card, can directly record data to the card ,which is convenient for your data sharing and storage - Frequency Range: Compared to the tinysa (100kHz to 960MHz), the upgraded tinysa ULTRA has 100kHz to 5.4GHz ultra-wide measuring frequency range, spectrum analyzer for 0.1-800MHz, with Ultra mode up to 0.1MHz-6GHz.Switchable resolution band pass filters for both ranges between 200Hz to 850kHz. Color display showing 450 scan points covering up to the full low or high frequency range. Faster and more accurate measurement performance, you can easily cope with measurement testes in various fields - 2 in 1 Multifunctional Frequency Analyzer & Signal Generator: When not used as Spectrum Analyzer it can be used as Signal Generator,with sine wave output between 0.1-800MHz or square wave or dual tone output up to 4.4GHz.Built-in calibration signal generator that is used for automatic self test and low input calibration - PC Control: Connected to a PC via USB it becomes a PC controlled Spectrum Analyzer or Signal Generator.Tinysa-APP transfers data directly to the computer.The USB interface implements CDC protocol and there is a large set of commands that can be invoked over the serial interface. These command can be used to perform measurements or update internal settings. The driver for Windows will install automatically after connecting to a Windows PC. The driver for Linux is built into the kernel - Ultra-long Battery Life: The upgraded tinysa analyzer built-in 5000m-ah rechargeable battery,with type-C charging cable and LED charging indicator,it can be fully charged within 3 hours,no need to charge frequently ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CG31FYWR | | Batteries | 1 Lithium Polymer batteries required. (included) | | Best Sellers Rank | #25,482 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Spectrum Analyzers | | Date First Available | August 19, 2023 | | Item Weight | 2.02 pounds | | Manufacturer | Seesii | | Product Dimensions | 6.3 x 4.33 x 2.17 inches | ## Images ![SeeSii TinySA Ultra+ ZS406 Spectrum Analyzer with 50W Attenuator, 4.0 Inch 100kHz to 5.4GHz Handheld Tiny Frequency Analyzer with 32Gb Card,100kHz to 800MHz MF/HF/VHF UHF Input, 2025 Upgraded - Image 1](https://m.media-amazon.com/images/I/8161fAsZ4FL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Upgrade of the Vintage TinySA Spectrum Analyzer *by M***E on February 26, 2025* I'm still in the process of evaluating the Ultra's capabilities. But, a few initial thoughts. A person that is used the original TinySA can operate and calibrate the Ultra out of the box. I note that an actual operation manual specifically for the Ultra seems to be unavailable, so a person new to the TinySA will have to look through the original TinySA manual and gather bits and pieces on TinySA website for the additional features of the Ultra. They refer to groups.io for a knowledge base and I have experienced mixed results. The waterfall of the Ultra seems not as clear and distinct as the original TinySA. On the bench, the Ultra is reasonable for most spectrum analyzer applications, but not the precision of commercial equipment. In summary, a reasonable value for cost and small enough to fit in your hand, a useful tool in my tool box for sure. Cheers! ### ⭐⭐⭐⭐⭐ Handy Tool *by J***N on January 17, 2026* Works as stated. Good build quality. ### ⭐⭐⭐⭐⭐ Compact, capable, affodable *by B***H on January 31, 2026* I can't believe how capable this thing is for what it costs. My employer used to pay 6-figures for an equivalent capability that fit in a 19" rack. This fits in my pocket and costs less than a night out with my wife. Bought it to find a serious source of interference in my ham shack (Chinese grow lights) and have found all sorts of uses for it since. ## Frequently Bought Together - SeeSii TinySA Ultra Spectrum Analyzer with 50W Attenuator, 4.0 Inch 100kHz to 5.3GHz Handheld Tiny Frequency Analyzer with 32Gb Card,100kHz to 800MHz MF/HF/VHF UHF Input, 2024 Upgraded - BECEN 10W SMA Attenuator,40db,DC to 3GHz,50 Ohm - DHT Electronics Handheld Antenna Cable SMA Male to UHF SO-239 Female Connectors 6'' Pack of 2 for Amplifier --- ## 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.us/products/585524817-seesii-tinysa-ultra-zs406-spectrum-analyzer-with-50w-attenuator-4](https://www.desertcart.us/products/585524817-seesii-tinysa-ultra-zs406-spectrum-analyzer-with-50w-attenuator-4) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-20*