Who knows safety; How to distinguish internal insurance from external insurance? Thank you.

I work in a property management company. Our company's internal insurance is divided into external insurance: the external insurance is provided by the security company hired by the property management company, and the salary is low. Generally responsible for guarding the door, watching the car and patrolling.

Internal insurance is a regular employee of the property management company, and his position is mobile. He needs to be responsible for the operation, fire protection and safety of the monitoring room facilities in the whole community. In the monitoring room, the internal insurance also needs a work permit.