rs485 to gprs iot cellular modem

{"cid":"91199119","title":"RS485 To GPRS IOT Cellular Modem","imgUrl":"https:\/\/img.chinax.com\/nimg\/10\/d5\/ff8c0fa50fe3d58cf95fe21bb2ef-200x200-1.jpg","attrs":{"Price":"USD49-55\/PCS","Brand Name":"IOTROUTER","Model Number":"ZHC4921","Minimum Order Quantity":"1PCS","Delivery Time":"1 WEEK","Certification":"CE FCC RoHs","Place of Origin":"Sichuan, CHINA","Payment Terms":"L\/C, T\/T, Western Union","Supply Ability":"50000PCS\/MONTH","Packaging Details":"270*180*55mm CARTON PACKAGE","Material":"Galvanized Steel Sheet","Product Name":"RS485 To GPRS IOT Cellular Modem","Interface":"RS485\/4DI\/4DO\/4AI","Protocol":"MODBUS TCP\/RTU","Function":"Wireless Data Transmission","Application":"Iot Automation","Working Voltage":"12V","Module Type":"GPRS","Customized":"Support","Size":"159*95.9*27.5mm","Color":"Black"}}

{"cid":"91220825","title":"Convert Serial to GPRS 3G GSM Modem The Perfect Solution for PLC AMR Data Collection","imgUrl":"https:\/\/img.chinax.com\/nimg\/6f\/f8\/ec89c6e9fa0bf78d06cee01315ed-200x200-1.jpg","attrs":{"Price":"$99.00 - $299.00\/pieces","Brand Name":"BGT","Model Number":"BGT-2103","Minimum Order Quantity":"1 piece","Place of Origin":"Beijing, China","Product name":"gsm rtu sms controller","Cellular Module":"Industrial cellular module","Standard and Band":"Support:TDD-LTE,FDD-LTE,EVDO,WCDMA,TD-SCDMA,CDMA1X,GPRS\/EDGE","TX power":"<24dBm","RX sensitivity":"<109dBm","CPU":"Industrial 16\/32 bits CPU","FLASH":"512KB (Extendable)","SRAM":"256KB(Extendable)","Indicator":"\"Power\",\"ACT\",\"Online\"","Antenna":"Standard SMA female interface, 50 ohm, lighting protection(optional)","Packaging Details":"Box","Port":"Tianjin","Supply Ability":"2000 Piece\/Pieces per Week"}}