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Shenzhen sensor module manufacturer · Since 2012
YYS designs and manufactures IAQ, gas detection, temperature-humidity and sensing-element modules for appliance, HVAC, instrumentation and industrial monitoring OEMs worldwide.
Trusted by appliance, HVAC & instrument OEMs
Product System
Buyers route by use case first, then by sensor target, output interface and module form. Four families cover 90%+ of OEM sensing needs.
Multi-parameter IAQ modules for air purifiers, fresh-air systems, room monitors, HVAC and smart-building equipment.
CO₂ · PM2.5 · VOC · HCHO · T&H25 productsGas sensing modules for alarms, portable detectors, fixed monitoring equipment and industrial safety instruments.
CO · H₂S · NH₃ · O₃ · SO₂ · CH₄ · LPG · O₂22 productsTemperature and humidity modules, probes and components for HVAC, appliances and environmental control.
Digital · Analog · NTC · Humidity elements13 productsSensing elements and replacement parts for engineering teams that need component-level selection or module-level integration.
Gas cells · Sensing elements · Board partsWhy OEM teams choose YYS
Production-line calibration and unit-by-unit testing keep CV low across thousands of pieces — critical for purifier and HVAC SKUs.
UART, RS485, I²C, PWM and analog outputs available on the same target gas — no firmware redesign on your control board.
Optimized drive circuits for always-on appliance use; representative modules rate >3 years continuous operation.
Shielded layouts, baseline-drift compensation and signal conditioning for noisy industrial and automotive environments.
Pinout, protocol, enclosure and calibration curves can be tuned to match your existing PCB or housing.
No middleman — engineering, sampling and bulk production handled in the same Shenzhen facility.
Featured Modules
Multi-Parameter IAQ
CO₂ · PM2.5 · TVOC · HCHO · Temperature · Humidity in a single integrated module. UART / RS485 output. Designed for IAQ monitors, ERV controllers and smart-building gateways.
View Multi-Parameter Series →Industrial Gas
CO, H₂S, NH₃, SO₂, O₃, O₂ and more. UART / PWM / analog output, factory-calibrated. Used in portable detectors, fixed alarms and industrial safety instruments.
View Gas Detection Series →Case Studies
Three representative OEM programs — anonymized where required, but the engineering work is real.
M-series 5-in-1 module with custom UART protocol, integrated into a flagship air purifier shipped across APAC. Calibration tuned for low-PM living-room conditions.
HR-series anti-condensation T&H module replacing a discontinued Japanese sensor. Pin-compatible drop-in with matched calibration curve — zero firmware change on the existing PCB.
SC-CO and SC-NO₂ electrochemical modules deployed in fixed gas alarms across underground garages. Pre-calibrated cells with RS485 reporting up to a building automation gateway.
FAQ
Yes. Once volume and target use case are clear, we tune calibration curves, communication protocol, pinout and (where applicable) enclosure to match your control board.
Standard catalog modules from 100 pcs; customized firmware/hardware variants from 500–1,000 pcs. Samples available in single-piece quantities.
Samples ship in 3–7 business days from stock. Bulk lead time is typically 15–30 days.
Modules ship with manufacturer test reports and calibration data. CE / RoHS / REACH / FCC available on request per module.
Yes — we maintain replacement-compatible variants for several Sharp PM2.5, Plantower particulate, Figaro VOC and Shinyei humidity sensors.
R&D, calibration and assembly are all done in our Shenzhen facility.
Ready to move forward?
YYS engineering responds within one business day. Samples, datasheets and customization options included.
