I. Introduction / Product Overview Brand and Model: Yuntang YT‑SP02 Executive Testing Standard: Corresponding national food safety GB series standards Testing Principle: Spectrophotometry, colloidal gold immunochromatography Testing Object: Food additives, toxic and harmful substances, pesticide residues, diseased meat, heavy metals, veterinary drug residues, etc. Test items can be selected as needed Core Purpose: Qualitative and quantitative rapid screening of food safety indicators Applicable Scenario Overview: Food and drug supervision, food deep processing enterprises, college canteens, agricultural departments, supermarkets, inspection and quarantine departments on-site rapid testing Yuntang YT‑SP02 is a desktop two-in-one food safety detector with a desktop body and ≥12 testing channels. Test items can be selected as needed, and the instrument has reserved ports for future expansion of new testing items; it features an Android intelligent system, which allows for both fixed-point testing in enterprise laboratories and on-site temporary spot checks, suitable for users with limited budgets who require on-demand configuration of testing items.

II. Core Product Advantages: Detection Capability ≥12 independent detection channels, each channel independent and non-interfering, allowing simultaneous testing of multiple samples; different channels can carry out different detection projects simultaneously; built-in multi-category sample menu library, with sample names and inspection units directly entered through the touch screen; built-in national limit standards, with automatic comparison and determination of results; automatic accumulation of sample numbers.

Hardware and operating system: Mainly controlled by ARMCortex‑A7, RK3288 quad-core processor, with a main frequency of 1.88Ghz; ≥8-inch LCD touch screen, Android intelligent operating system; imported high-brightness LED four-wavelength cold light source at 410, 520, 590, 630nm, with up to 64 wavelengths for light path switching; controllable light source, capable of turning off idle light sources to reduce power consumption; intelligent constant current voltage regulation, automatic light intensity calibration, no temperature drift during long-term operation.

The new generation of embedded thermal printers for data output and transmission supports manual/automatic printing, outputting inspection reports and QR codes. It supports wireless remote transmission via Ethernet cable, WIFI, and GPRS, uploading data to the monitoring platform. With a USB2.0 driver-free interface, it allows for storage and copying via a USB flash drive, enabling data query, browsing, statistics, and printing.

Intelligent protection and management features include power-on self-test, zero adjustment, and automatic repeated detection and verification; user name and password permission management to prevent unauthorized personnel from making mistakes; modifiable determination thresholds and calibration values, with data not lost during power failure; support for calibration, locking, and factory reset; expandable detection items, with firmware support for upgrades; DC12V DC power supply, support for on-board power supply, and optional 6Ah high-capacity lithium battery for outdoor detection.

III. Optional Expansion Features: Optional 6Ah high-capacity lithium battery; firmware upgrade to expand detection items; complete set of experimental consumables; optional corresponding detection reagents as needed (100 tests/set).

IV. Detailed Technical Parameters Main Controller: RK3288 quad-core processor, clocked at 1.88Ghz Screen: ≥8-inch LCD touch screen Light Source: 410, 520, 590, 630nm, expandable to 64 wavelengths Channel: ≥12 Storage Capacity: 200,000 typical project indicators Pesticide Residue Detection Lower Limit: Inhibition rate 5%, Detection Range: Inhibition rate (0~100)% Formaldehyde Detection Lower Limit: 1mg/kg, Detection Range: (0~100) mg/kg Nitrite Detection Lower Limit: 1mg/kg, Detection Range: (0~100) mg/kg Sulfur Dioxide Detection Lower Limit: 1mg/kg; 5mg/kg, Detection Range: (0~100) mg/kg; (0~500) mg/kg Overall Dimensions: 42×31×20cm, Net Weight: 3.6kg Packaging Dimensions: 510×390×375mm, Packaging Weight: 6.9kg V. Detailed Application Scenarios Production Side: Small and medium-sized food processing factories conduct self-inspection of raw materials and finished products, selecting testing items as needed; Circulation Side: Supermarkets and farmer's markets screen food upon entry; Catering and Campus: School canteens, canteens of enterprises and institutions conduct ingredient testing; Regulatory Agencies: Market supervision and health departments conduct on-site spot checks; Scientific Research and Teaching: Colleges and universities conduct laboratory teaching experiments.

VI. Overall Appearance and Hardware Description The desktop integrated body includes a sample detection chamber, a touch display screen, and a built-in printing module; the body is equipped with USB ports, network interfaces, and power supply interfaces; placed on a desktop, it is compact in size and suitable for laboratory countertops, and can also be used for on-site temporary mobile detection with lithium batteries.

VII. Brief testing process: Sample sampling → sample pretreatment, reagent color development → placing in the instrument for detection → automatic calculation by the instrument, comparison with national standards for determination → printing report / exporting to U-disk / uploading to the supervision platform. VIII. List of accessories: Desktop host, power adapter; basic consumables such as cuvettes, centrifuge tubes, scissors; detection reagents are selected as needed (100 tests/set).

IX. Brand and After-sales Instructions: Brand: Yuntang, developer and manufacturer of food safety rapid testing equipment; Key points for daily maintenance: Regular cleaning of the detection chamber and light source window, regular instrument calibration, and storage of reagents in the dark; Quality assurance and technical support: Complete machine warranty, remote technical guidance, operation training, firmware upgrades, and troubleshooting.

X. Conclusion YT-SP02 is a two-in-one desktop food safety detector with a desktop body, 12-channel parallel detection, and support for selecting detection items as needed, with the ability to expand and add new indicators in the future. It is easy to operate, provides complete reports, supports data networking and traceability, and is suitable for small and medium-sized food enterprises, canteens, and grassroots regulatory units for rapid food safety screening.