connected loop bus fire alarm system

{"cid":"91221733","title":"Connected Loop Bus Fire Alarm System with 2-Wire Non-Polarized Smoke Detection","imgUrl":"https:\/\/img.chinax.com\/nimg\/53\/5b\/4005a2a29749151c12f06ac2e825-200x200-1.jpg","attrs":{"Price":"negotiable","Brand Name":"XHA","Model Number":"CA9001","Minimum Order Quantity":"1PCS","Delivery Time":"3 Working days","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T, Western Union","Supply Ability":"100000PCS\/Month","Packaging Details":"100pcs\/carton","Wired":"2-Wired, Non-polarized","Types":"Smoke Alarm","Loop Bus wired":"2-wire Non-polarized","Working voltage":"DC24V","Customization":"Available | Customized Request","Connected":"loop bus","Installation":"Ceiling mounting"}}

{"cid":"91197022","title":"Clean Gas FM200 Fire Alarm System Control Panel","imgUrl":"https:\/\/img.chinax.com\/nimg\/5b\/e5\/b3ee4e108513e48fdfe2c74b7bf5-200x200-1.jpg","attrs":{"Price":"negotiable","Brand Name":"dingya","Minimum Order Quantity":"1 set of system","Delivery Time":"10-15 working days","Certification":"CE,CAL,CMA,CNAS,ILAC-MRA,CCC","Place of Origin":"guangzhou\uff0cchina","Packaging Details":"Plywood case or box case","Payment Terms":"L\/C, D\/P, T\/T, Western Union, Paypal, Credit card","Product":"FM200 Fire Alarm System","Usage":"Firefighting","Type":"fire alarm system","Function":"Fire Alarm,Fire detection,Emergency Alert"}}