What are the two types of four-star patrol system for residential property in Shandong?

On-line electronic patrol and Off-line Electronic Patrol System. The specific services of four-star property management include the following: daily services of hotel-style property management; Equipment and facilities management and maintenance services, etc. According to the property service specification, the patrol system includes online electronic patrol and offline electronic patrol system. The patrol system is a means for managers to check whether the patrol reaches the designated place at a specified time according to the patrol route.