1mhz channel audio guide system

{"cid":"91171271","title":"Lightweight Wireless Tour Guide System with 200 Meters Range and 1MHz Channel","imgUrl":"https:\/\/img.ismap.com\/nimg\/18\/c2\/c1c2c5636f9e64280f292b4287dc-200x200-1.jpg","attrs":{"Brand Name":"YingMi","Model Number":"E8","Place of Origin":"China","Channel Spacing":"1MHz","Weight":"20 Grams","Frequency":"860-870","Working Hours":"\u226515h","Distance":"More Than 200 M","Chargers":"Charger Or Charging Box","Batter":"Lithium Battery","Warranty":"1 Years"}}

{"cid":"91188370","title":"H.265 IP Mini Wireless Audio Transmitter Module With Dual Antenna Diversity Reception","imgUrl":"https:\/\/img.ismap.com\/nimg\/58\/49\/bb705777e629a6b88d77b33ecc57-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"Huanuo","Model Number":"SK-811","Minimum Order Quantity":"1 pcs","Delivery Time":"1~2 working days","Certification":"CE\/FCC\/ROHS","Place of Origin":"China","Payment Terms":"T\/T","Supply Ability":"500 pieces per month","Packaging Details":"Professional carton box package","DC input range":"DC 6~17V","Operating frequency":"300MHz~860MHz,Steping1MHz","Video decoding":"H.265","Demodulation":"cofdm","Dimensions":"106mm*65mm*17mm","Channel bandwidth":"1\/2\/4\/8M","Decryption method":"Dynamic 128 bit AES","UART port":"unidirectional transparent TTL serial data reception"}}