4 channel fixed gas detection system

{"cid":"91200158","title":"Sixteen Channel Combustible Gas Detection Controller With 8 Relays Output","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/4d\/29\/7f76725258dc04289dd4bf5b114a-200x200-1.jpg","attrs":{"Brand Name":"Zetron","Model Number":"TH100-16","Minimum Order Quantity":"1","Delivery Time":"3-7 days","Certification":"CE, ISO13485, ISO9001","Place of Origin":"China","Payment Terms":"T\/T, L\/C, Western Union, MoneyGram","Supply Ability":"10000 set\/month","Packaging Details":"paper carton","Type":"Gas Alarm Controller","Gas unit":"PPM","Voltage":"(18~30 VDC )","Channel":"16","Size":"400mm*280mm*80mm","Weight":"About 3.6kg"}}

{"cid":"90043289","title":"AC220V 50Hz Rotational Speed Sensor , Gas Monitor Hydrogen Leakage Detection NA1000MS","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/6d\/4d\/0990274847285f87a8637b8695a6-200x200-1.jpg","attrs":{"Brand Name":"OEM","Model Number":"gas monitor","Minimum Order Quantity":"1 set","Delivery Time":"15 days after signing the contract","Place of Origin":"China","Packaging Details":"Wooden box packing","Payment Terms":"T\/T","Supply Ability":"1000sets","Measuring range":"0 ~ 100%LEL","Instructions":"LCD dot matrix screen","Working way":"field fixed installation, continuous work","Power supply":"AC220V \u00b1 10% 50Hz","Analog output":"4 ~ 20mA"}}