opto isolated serial interface car button expansion board

{"cid":"91211323","title":"Mitsubishi Elevator Expansion Board LHS-1040A Plug-and-Play PCB with 40 Button Inputs and Opto-Isolated Serial Interface","imgUrl":"https:\/\/img.chinax.com\/nimg\/88\/3e\/86f59c3ad4ae14f0a73900697a72-200x200-1.jpg","attrs":{"Brand Name":"Mitsubishi","Model Number":"LHS-1040A","Minimum Order Quantity":"1","Delivery Time":"3-5 Working Days","Payment Terms":"D\/A,D\/P,T\/T,Western Union,MoneyGram","Type":"LHS-1040A","Product name":"Mitsubishi Elevator Car Button Expansion Board \u2013 LHS-1040A","Transportation":"Clients' Requestment,DHL TNT FEDEX UPS,Sea Delivery","Application":"Elevator","Business type":"manufacturer","Keywords":"Elevator Parts,Elevator Safety , Mitsubishi Elevator Car Button Expansion Board \u2013 LHS-1040A","Packing":"Packed in carton"}}

{"cid":"91201054","title":"USB3.0 four head main board inkjet control board Motherboard","imgUrl":"https:\/\/img.chinax.com\/nimg\/2c\/92\/745b2f9ee1510fa306e6e67148a0-200x200-1.jpg","attrs":{"Brand Name":"BetterPrinter","Model Number":"U3FMB_V101","Minimum Order Quantity":"1 set","Delivery Time":"3-10 work days","Place of Origin":"changsha, China","Payment Terms":"Bank transfer \/ WeChat \/ Alipay","Packaging Details":"Carton","Name":"USB3.0 four head main board","Specifications":"182mm*112mm","Colour":"blue","Feature":"Original and Brand New","Use for":"Industrial inkjet printer"}}