rs485 to nb iot data collector

{"cid":"91199367","title":"915mhz IoT Data Collector NB Antenna for Wireless Smart Home","imgUrl":"https:\/\/img.chinax.com\/nimg\/44\/7b\/d39393507f82d05097cc8a39838c-200x200-1.jpg","attrs":{"Price":"USD,Negotiation","Brand Name":"Lineyi","Model Number":"915mhz antenna","Minimum Order Quantity":"1,000pcs","Delivery Time":"7~15 days","Certification":"ISO9001","Place of Origin":"china","Payment Terms":"T\/T,Paypal, Western Union","Supply Ability":"300,000pcs\/month","Packaging Details":"PE+Carton","Name":"915mhz antenna 915mhz IoT data collector NB antenna 868mhz wireless smart home antenna","Impedance":"50\u03a9","Standing wave ratio":"\u22642.0","Gain":"2.5dbi","Power Capacity":"50W","Polarization mode":"Vertical","Lightning Protection":"DC ground","Operating temperature":"-40\u2103~60\u2103","Storage temperature":"-20\u2103~40\u2103","Interface":"SMA\/RP SMA\/TNC\/BNC\/N","Size":"0.9D*50L","Band width":"100 MHz"}}

{"cid":"91216697","title":"Smart Advanced Metering Infrastructure RS485 To LoRaWAN Collector Remote Control","imgUrl":"https:\/\/img.chinax.com\/nimg\/d3\/9a\/a424e681bfd04af8ccbddadb1773-200x200-1.jpg","attrs":{"Brand Name":"TimeWave","Model Number":"Type DCRL12-RDK150","Minimum Order Quantity":"Negotiable","Delivery Time":"3-5 weeks after receive the payment","Certification":"ISO\/IEC 20000-1,ISO\/IEC 27001,ISO\/IEC 9001","Place of Origin":"Hubei , China","Payment Terms":"L\/C, T\/T","Packaging Details":"Customizable packaging","Name":"RS485 to LoRaWAN Collector","Size(mm)":"100*36*67","Active power":"\u2264 3W","Apparent power":"\u22645VA"}}