Import Air Quality Sensor Kf-800f — Buy in Bulk from Supplier in China

The KF-800F is an intelligent air quality controller that monitors indoor temperature and CO2 concentration in real time, outputting direct control signals to regulate ventilator speed. The unit operates across three automatic speed tiers triggered by CO2 thresholds, a fully manual override mode, and a programmable timer with 28 weekly periods. CO2 concentration triggers are factory-set at 100ppm increments above a user-adjustable baseline of 350 to 600ppm, with backlight colour shifting from green below 500ppm, through yellow at 500-799ppm, to red above 800ppm. The controller interfaces with residential, commercial and industrial ventilation systems to modulate airflow without external building management integration.

The KF-800F employs a high-precision non-dispersive infrared (NDIR) CO2 sensor, standard for mid-range indoor air quality controllers, with typical accuracy of ±50ppm or ±5% of reading (whichever is greater) at standard conditions. The timing function allows four daily periods across seven days, programmed through a four-button interface with 10-second auto-save to prevent data loss. The device runs on mains power with relay or PWM output to control single-phase or three-phase ventilator motors. Typical housing is ABS flame-retardant plastic with a backlit LCD, though the exact ingress protection rating and operating temperature range should be confirmed with the supplier.

Buyers include HVAC contractors, property developers, green-building consultants and facilities managers seeking Part F or ASHRAE 62.1 compliance in offices, schools and apartment blocks. The unit suits projects requiring demand-controlled ventilation without full BMS cost. Typical trade terms from Shenzhen electronics suppliers are EXW Shenzhen or FOB Shenzhen, with MOQ and lead time to be confirmed directly with Shenzhen Viewpu Technology Co., Ltd. Buyers should verify whether the unit carries CE marking, RoHS compliance and any China Compulsory Certification (CCC) for electrical safety before import.

Shenzhen Viewpu Technology Co., Ltd. is located in Nanshan District, Shenzhen, Guangdong Province, with a registered address at Room 311-313, Building 10, Second Industrial Park of Guanlong Village. The company holds a harbor trust tier on its marketplace profile, with a response rate of 0.00% and no recorded average response time. This profile indicates limited active engagement signals, so buyers should expect to initiate contact and allow time for reply rather than rely on rapid quotation turnaround.

The supplier lists the KF-800F as its featured air quality controller, positioning itself in the Shenzhen electronics manufacturing cluster where component sourcing and PCB assembly infrastructure are concentrated. No verified factory audit, ISO certification, or stated annual turnover appears in the available profile. Buyers are advised to request a company brochure, factory video or third-party verification before committing to volume orders, and to confirm whether Shenzhen Viewpu operates as a manufacturer or trading company.