Choosing a Wired Audio Intercom for Secure Site Communication

Choose a wired audio intercom by matching station count, communication controls, cable distance and any door-release needs to the site. This guide compares the listed AIPHONE LEM Series and 1-Call options and outlines practical checks for planning and installation.

Table of Contents

• Key Takeaways
• Match the Intercom to the Site’s Communication Needs
• Compare Station Setup and Communication Controls
• Plan Station Locations and the Cable Route
• Avoid Installation Mismatches
• Frequently Asked Questions
• Can the AIPHONE LEM Series and 1-Call system be combined?
• Do the listed intercoms require a network connection?
• Where can installers check model-specific setup information?
• Glossary

Key Takeaways

• The AIPHONE LEM Series supports up to one master station and one sub station, with selective door release and voice volume control.
• The 1-Call Master Station uses push-to-talk simplex communication and specifies cable distances by wire gauge.
• For the 1-Call unit, the listed cable is two-conductor and overall-shielded; the stated distances are 650 feet with 22 AWG or 1,570 feet with 18 AWG.
• Verify power, wiring and station requirements for the specific system rather than assuming components are interchangeable.

Match the Intercom to the Site’s Communication Needs

Start by identifying who needs to communicate, how many stations are required and whether a door-release function is part of the installation. The listed options differ in their specified communication controls and wiring details, so compare those requirements with the site plan before selecting a system.

The AIPHONE LEM Series supports up to one master and one sub station. It provides push-to-talk at the master, hands-free operation at the sub or door station, voice volume control and selective door release. The 1-Call option uses push-to-talk simplex communication.

Choose based on the functions you need, not on an assumption that one system can be expanded or combined with the other. The supplied product details do not specify compatibility between them.

Compare Station Setup and Communication Controls

The table compares the station arrangement, communication controls and other listed requirements for each option.

For a site where selective door release or hands-free use at the sub or door station is required, those functions are listed for the LEM Series. If the route length and cable gauge are key constraints, the 1-Call specifications give explicit distance options to check against the planned run.

Plan Station Locations and the Cable Route

Mark the master station and each sub or door station on the site plan before routing cable. Consider the actual path between endpoints, then compare it with the requirements for the selected system. The supplied 1-Call Master Station details specify two-conductor, overall-shielded cable and distances of 650 feet with 22 AWG or 1,570 feet with 18 AWG.

Use a simple planning checklist before installation:

• Confirm the number and location of stations required.
• Measure the cable route between the master and sub or door station.
• Check the cable type and wire gauge against the selected system’s stated requirements.
• Confirm any required door-release function and the communication controls needed at each station.

Do not apply the 1-Call cable distances to another intercom without confirming that system’s own requirements. The supplied LEM Series details do not state cable type or distance.

Avoid Installation Mismatches

Before installation, verify the selected system’s station count, communication mode, cable type, route distance and power requirements. A feature or accessory listed for one option should not be treated as applicable to the other unless its documentation confirms that.

• Check the power source: The 1-Call specifications list a 6V DC power source and specify use of the SKK-620C. Do not assume another supply is suitable.
• Keep cable requirements system-specific: Use the listed two-conductor, overall-shielded cable and distance guidance for the 1-Call setup; verify requirements separately for other systems.
• Confirm station functions: Check that the chosen arrangement supports the required communication controls and door-release needs.
• Consult the relevant documentation: Use the installation information for the selected system and its specified accessories.

Frequently Asked Questions

Can the AIPHONE LEM Series and 1-Call system be combined?

The supplied details do not confirm that the two systems are compatible or intended to operate together. Their listed station controls and wiring information differ, so do not assume that stations, power components or other parts can be shared. Check the documentation for the specific equipment or confirm compatibility with the relevant supplier before planning a combined installation.

Do the listed intercoms require a network connection?

The supplied product information does not state a network connection requirement for either option. It describes audio intercom functions, and the 1-Call details specify a wired station connection. If a project requires network integration or remote communication, confirm that capability separately rather than inferring it from the wired audio specifications.

Where can installers check model-specific setup information?

Use the documentation named for the equipment being installed. The supplied materials include the AIPHONE LEM Series Installation Manual and the AIPHONE SKK-620C Power Adaptor Installation Manual. Consult the relevant manual for the selected setup, and avoid relying on instructions for another model or accessory as a substitute.

Glossary

• Simplex: A communication mode in which the listed 1-Call system uses push-to-talk.
• AWG: American Wire Gauge, the wire-gauge designation used for the listed cable distances.
• Overall-shielded cable: Cable specified with an overall shield around its conductors.
• Selective door release: A listed intercom function for releasing a door selectively.

The best choice is the system whose station arrangement, controls, wiring and power requirements match the site. For a wired setup with specified push-to-talk communication and cable-distance guidance, the 1-Call Master Station is a relevant option to review against your installation plan.

Confirm the site requirements and model-specific installation details before specifying equipment. Tegas Integrasi’s security and networking range can support installers and integrators planning dependable site communication.