residential erv hrv system with ec fans

{"cid":"91223798","title":"Residential ERV HRV System Featuring EC Fans and Heat Exchanger for Continuous Fresh Air Ventilation and Energy Saving","imgUrl":"https:\/\/img.chinax.com\/nimg\/69\/da\/923756bf11dff1f45177fc64f5c6-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Holtop","Model Number":"CFA 300T","Minimum Order Quantity":"1pc","Delivery Time":"Two weeks","Certification":"CE","Place of Origin":"Beijing,China","Payment Terms":"TT","Supply Ability":"200000 units per year","Packaging Details":"box","Rated Voltage \u3001Rated Frequency":"Single Phase 230V~50Hz","Power Supply Voltage":"Rated Voltage \u00b110%","Operating Conditions":"Temperature: -10\uff5e40\u2103 Relative Humidity: \u226485% RH","Storage Conditions":"Temperature: -10\uff5e55\u2103 Relative Humidity: \u226485% RH","Control Method":"Dual Screen Control, Buttons + Indicator Lights \/ Digital Tubes","Fan Type":"EC Fan","Heat Exchanger":"Specially Engineered Resin","Filter":"Aluminum Alloy Frame + PU Foam \/ G4"}}

{"cid":"91225759","title":"Smart Ventilation System HVAC Controller EC PWM AC DC Fan Motor Control With RS485 Modbus","imgUrl":"https:\/\/img.chinax.com\/nimg\/3f\/53\/5f7c8a89222cab87243c2b984ee8-200x200-1.jpg","attrs":{"Price":"US$79","Brand Name":"OEM or neutral (no brand)","Model Number":"G5","Minimum Order Quantity":"1","Delivery Time":"2-3 weeks","Payment Terms":"T\/T","Built in sensors":"VOC+PM2.5+CO2+Temperature+Humidity","Suitable for fans":"AC\/EC\/DC","Mounting method":"Wall mounting","Place of Origin":"China","WIFI function":"Optional","Supply Ability":"100000pcs","Shell color":"White","Certification":"CE, RoHS","Product name":"Fresh air ventilator controller"}}