knx pushbutton interface potential free contacts

{"cid":"91224765","title":"UP 220\/21 KNX Pushbutton Interface 2xPotential-Free Contacts LED Output Flush Mount 5WG1220-2AB21","imgUrl":"https:\/\/img.chinax.com\/nimg\/53\/d0\/64756ce9d84dc1a45eae3af8f6e6-200x200-1.jpg","attrs":{"Model Number":"5WG1220-2AB21","Minimum Order Quantity":"5","Delivery Time":"7 Days","Certification":"CE RoHS","Packaging Details":"Carton","Type":"Input Module","Output Type":"Provide signal voltage","Interfacetype":"Digital\/Analog","Color":"Light Grey","Payment Terms":"T\/T,Western Union","Mountingtype":"DIN rail","Place of Origin":"EU","Statusindicators":"LED for each channel"}}

{"cid":"91223304","title":"Pollution Free Digital Ammonia Nitrogen Sensor With Potassium Ion Compensation","imgUrl":"https:\/\/img.chinax.com\/nimg\/b4\/b9\/7f6d76a4876a58c0c24f310e0b28-200x200-1.jpg","attrs":{"Price":"USD300-600","Brand Name":"JUGE","Model Number":"AG6015DK","Minimum Order Quantity":"1 Unit","Delivery Time":"5-8 working days","Place of Origin":"Nanjing, China","Certification":"IOS9001, CE","Packaging Details":"Neutral carton","Payment Terms":"Online order,T\/T","Supply Ability":"100 Unit\/Week","Ion":"Ammonia nitrogen","Range":"0.1-1000mg\/L","Power supply":"9-36VDC","Material":"PP+PVC","Waterproof level":"IP68\/NEMA6P","Accuracy":"\u00b12.5%","Output":"MODBUS RS485","Pressure Range":"\u22640.3Mpa"}}