13 56mhz rfid recognition system head

{"cid":"91221957","title":"13.56MHz RFID Recognition System Read Write Head With RS-485 LED Display And M30","imgUrl":"https:\/\/img.chinax.com\/nimg\/4e\/0e\/3608fd745ba1480598b445885816-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"KRONZ","Model Number":"KRH-M30G-R4","Minimum Order Quantity":"10 pieces","Delivery Time":"5-8 working days","Place of Origin":"Guangdong, China","Certification":"CE","Payment Terms":"T\/T, Western Union, MoneyGram","Supply Ability":"10000 pieces per month","Packaging Details":"Paper box packing","Series":"M30 Series","Features":"High reading and writing speed","Description":"RFID HF Read\/write Head","Operating Temperature":"-30\u2103~+70\u2103","Voltage Rating":"18-30V","Interface":"M12 4 Pin Male Connector","Operating frequency":"13.56MHz","Supply voltage":"9-30VDC"}}

{"cid":"91190147","title":"Durable Passive G03 RFID Chip Wristband RFID Silicone Wristband Curve Head","imgUrl":"https:\/\/img.chinax.com\/nimg\/99\/6a\/900dddb60c2e540200de06605436-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"ZD-wristband","Model Number":"G03","Minimum Order Quantity":"100pcs","Delivery Time":"10-15 work days","Certification":"ISO 9001, 14001, OHSAS18001","Place of Origin":"Shenzhen, China","Payment Terms":"T\/T, Paypal, Western Union","Supply Ability":"100,000,000 pcs per month","Packaging Details":"100pcs\/bag, 10bags\/carton","Material":"Silicone - Soft, Flexible, and Durable","Size":"61,67,76,72( external diameter)","Color":"Orange, Yellow, Red, Green, Blue, etc","Craft":"Laser, silk screen","Head":"Curve","Print":"Unprintable for the Strap","Writing Cycle":"100,000 times","Function":"Membership Management, Access control, E-payment, E-ticket, Identification,"}}