How big is the property's sentry box?

If you build your own security box, there is no uniform regulation, and it is customized according to the site situation. Generally speaking, at least one security guard should be able to sit in the box and write records. In the northern region, winter heating equipment should also be added to the sentry box.

If you buy prefabricated metal boxes, the manufacturer will provide a variety of standard size boxes for users to choose from.