automatic water cannon with ir sensor

{"cid":"91206681","title":"50mA No Reagents Chemical Oxygen Demand Meter For Sewage River","imgUrl":"https:\/\/img.chinax.com\/nimg\/7e\/94\/1472ffc17bc08d0ce95cb16e530c-200x200-1.jpg","attrs":{"Price":"$1200.00 - $5000.00\/ Piece","Brand Name":"Desun Uniwill","Model Number":"DS-500","Minimum Order Quantity":"0~100 pcs","Delivery Time":"7~ 15 working days","Place of Origin":"China","Payment Terms":"L\/C, D\/A, D\/P, T\/T","Supply Ability":"0~1000 pcs","Packaging Details":"Carton packaging","Output signal":"RS-485, MODBUS","Range":"COD 2.5 to 1000 mg\/l equiv. KHP","Accuracy":"0.01mg\/L COD","Temperature range":"+5 ~ 45\u00b0C","IP Grade":"IP68","Maximum pressure":"1 bar","Calibration":"1 or 2 point calibration","Power Supply":"DC 12V +\/-5%, current <50mA","Cable length":"5m (default)","Housing Material":"SS316L"}}