The BTQ-SL8 is an extension unit for BTQ-VM4/8 PAVA controller. It increases the number of zones by a further 8 speaker zones. Up to 31 x BTQ-SL8 secondary units can be added per controller via a dedicated digilink local network, providing a maximum of 256 A/B zones and extends the number of input and output contacts available in the system at the same time.

The BTQ-SL8 is linked to the main unit via STP CAT5/6 cable with shielded RJ45 connector (max. length 10M between units). The BTQ-SL8 is capable of handling 1000W speaker load per zone and 2000W max. per unit.

The BTQ-SL8 contains 9 monitored EVAC inputs triggered either by dry contact, 8 logic control inputs and 8 relay control outputs (configured by web browser). In addition, the BTQ-SL8 has a digital paging and control console interface. In accordance with EN54-16 and UL2572, all BOUTIQUE system including paging microphones and loudspeaker lines are monitored.

The speaker lines are monitored for short, open circuit and leakage. Multiple volume attenuators can be installed on monitored speaker lines without loopback cable.