P-9911(J) is a telephone jack socket, normally located aP-9911(J) is a telephone jack socket, normally located aP-9911(J) is a telephone jack socket, normally located aP-9911(J) is a telephone jack socket, normally located at various places. Common installation positioning is in the landing levels of all core stairwells and escape routes, although the exact positioning is the responsibility of the projectdesigner. The person on site with a mobile handset may just plug & talk to the control center. The unit should be mounted in a suitable and dry location at about 1.5m from finished floor levelP-9911(J) is a telephone jack socket, normally located at various places. Common installation positioning is in the landing levels of all core stairwells and escape routes, although the exact positioning is the responsibility of the project designer.

The person on site with a mobile handset may just plug & talk to the control center. The unit should be mounted in a suitable and dry location at about 1.5m from finished floor levelP-9911(J) is a telephone jack socket, normally located at variouP-9911(J) is a telephone jack socket, normally located at various places. Common installation positioning is in the landing levels of all core stairwells and escape routes, although the exact positioning is the responsibility of the projectdesigner. The person on site with a mobile handset may just plug & talk to the control center. The unit should be mounted in a suitable and dry location at about 1.5m from finished floor levels places. Common installation positioning is in the landing levels of all core stairwells and escape routes, although the exact positioning is the responsibility of the projectdesigner. The person on site with a mobile handset may just plug & talk to the control center. The unit should be mounted in a suitable and dry location at about 1.5m from finished floor level