rs 485 protocol pir presence detector

{"cid":"91148999","title":"RS-485 Protocol Surface Mounted PIR Presence Detector With 4m Mounting Height","imgUrl":"https:\/\/img.chinax.com\/nimg\/89\/a3\/ee4296a96a104013d2d646abf9f0-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"Merrytek","Model Number":"MSA238D IR 485","Minimum Order Quantity":"100pcs","Delivery Time":"1, Sample and small order: Within 5 working days after receiving your payment. 2, Bulk order: 3-4 weeks after receiving deposit.","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T","Supply Ability":"10,000pcs per month","Packaging Details":"White box+ White box tags+ Clapboard+ Carton(K=A)","Input Voltage":"12-24Vdc","Working current":"20mA mAX.","Power Consumption":"\u22640.5W","Function":"RS485","Available":"PIR Motion detection, daylight sensor","Mounting Height":"2.5-4m","Installation":"Flush-mounted","Cut size":"\u03a645mm"}}