Technical data
Speaker circuits	5
Dimensions (W x H x D)	195 x 325 x 155 mm

The VLM-105 is a digital microphone station from RCS Audio-Systems, designed for remote control of up to five speaker zones as well as for group call (All-Call). It is used in conjunction with the compact central units VLA-120C or VLA-240C and enables decentralized control of PA systems in buildings, facilities, or plants where central operation is insufficient. The station features an integrated condenser gooseneck microphone with cardioid polar pattern and a 2-tone pre-announcement, which is triggered before actual voice transmission. Volume and priority settings are adjustable on the front panel, allowing flexible use in various application scenarios.

Applications

The VLM-105 is suitable for use in safety-critical installations such as hospitals, schools, administrative buildings, or industrial plants, where reliable and organized communication across multiple zones is required. The station can be operated in series with up to six additional stations, with a maximum total cable length of 100 meters. With fewer stations (up to three), the cable length can extend up to 250 meters. Remote control is achieved via a system cable, which may use RJ45, flat ribbon, or special cable depending on the model.

Functions and Equipment in Detail

The station includes an AUX-IN connection (L + R, RCA), allowing external sources such as CD players or other audio devices to be connected. Operation is performed via a front panel with controls for volume, pre-announcement, siren, and Tel-Paging. The station supports control of five individual speaker zones as well as an All-Call mode. Priority control can be activated via a switch on the front panel for microphone inputs MIC-1, MIC-2, and MIC-3, granting these inputs priority over other inputs.

Technology Explained Simply

A central component of the VLM-105 is the digital receiver module RR-10, which is factory-integrated and enables communication with the VARIO-LINE central unit. The module receives and decodes digital control data and feedback signals from the central unit, such as line status or system feedback. This information is used to control LED indicators and execute zone switching. Communication takes place via a secure digital control protocol, ensuring reliable and interference-resistant data transmission.

Compatibility and Accessories

The VLM-105 is compatible with the central units VLA-120C and VLA-240C, as well as with the function module VLE-004, which enables remote control of special functions. The station can also be connected to the text module DMT-10, enabling control of text displays. Connection is made via a system cable, which may use RJ45, flat ribbon, or special cable depending on the configuration. The RR-10 module is included in the delivery scope and is factory-integrated.

Installation and Mounting

The VLM-105 is designed as an internal module and can be either factory-integrated or installed as a retrofit option. Installation is performed using the designated connection terminals and sockets on the rear of the station. The connection terminal for the priority circuit is only available if the interface module RR-10 is installed. Mounting and installation should be carried out by authorized specialist personnel to ensure proper function and safety.

Operational Advantages

The VLM-105 offers a compact design with dimensions of 195 x 325 x 155 mm (W x H x D) and is fully integrated into the architecture of the respective station. Digital control via the RR-10 module enables precise and reliable communication between the station and the central unit. The integrated LED indicator and priority control ensure clear user guidance and an organized communication sequence. The station is ideal for use in safety-critical PA systems where fast and reliable information transmission is required.

Delivery Contents

The product is delivered with the RR-10 receiver module (pre-installed), connection instructions, and configuration assistance. Installation is recommended to be carried out only by authorized specialist personnel.