BMS system 2/4pipe keycard/window thermostat

{"cid":"90418","pid":"19349396","pimg_url":"\/\/img1.tradegrowthhub.com\/6c\/75\/0b68f489c55a\/product\/62117780_s-w400xh400.jpg","name":"Hotel Keycard System Window Card Modbus Function 2pipe 4pipe Touch Fan Coil Digital Thermostat","attrs":{"Price":"Negotiable","MOQ":"200 Pieces","Delivery Time":"Negotiable","Brand":"TOUPWELL, TOUPWELL or OEM"}}