JK Series

The official discontinuation date for the JK and JKW-IP Series is September 31st, 2019. Aiphone recommends using the JO Series as a replacement for the JK Series. To view JO Series, click here.

In addition to the JK-1MED master station, the JK Series supports a maximum of one door station and one JK-1HD(or JK-1SD audio only sub) sub master station. Note that there is no equipment, modification, or work-around that will allow the device to support more than these quantities.

The JK Series stations are not compatible with other intercom stations from Aiphone. All compatible door and sub master stations must contain the prefix of “JK”, ex. JK-DV.

The recommended wire for the JK Series is Aiphone’s solid, non-shielded two and four-conductor wires, part numbers 871802 and 871804 respectively. Click here to view the JK Series installation manual.

From the door station to the master station, the maximum wiring distance is 330′ (100m). From the master station to the expansion station, the maximum wiring distance is 330′ (100m).

The JK Series offers a built-in normally open, dry contact (L/L terminals) for door release, with a contact rating of 24v AC/DC, 500mA. For strikes with higher power requirements, or when a normally closed contact is needed for a magnetic lock, the RY-18L is required. The RY-1824L is always recommended when using door release, regardless of power requirements, to protect the JK station from power surges or other power-related events. For more information about this relay, including contact ratings and wiring instructions, click here.

For that information, you need to call the manufacturer of the door strike or magnetic lock. Aiphone cannot answer that question and cannot provide you with an acceptable alternative.

The JK Series offers a built-in normally open, dry contact (L/L terminals) for door release or may utilize the RY-1824L external door release relay. If the lock is wired in series with its power supply and the JK-1MED, remove the wires connected to the L/L terminals and touch them together. This simulates the contact closure provided by the station.

• If the lock opens: The contacts of the master station may be compromised. Contact Aiphone Technical Support if you suspect the unit needs to be seen for repair.
• If the lock does not open: The lock, its power supply, or the wire may be the issue and additional troubleshooting may be needed outside of the Aiphone equipment.

The same test may be done if the RY-1824L is used by shorting the BROWN and ORANGE wires on the RY-1824L. For more information about the RY-1824L, click here to view its installation manual.

The RY-ES external signal relay may be used to trigger a 3rd party chime or strobe when the JK-1MED master station is receiving a call. The relay will pulse with the chime of the master station providing a normally open, dry contact. For more information about this relay, including contact ratings and wiring instructions, click here.

This can be caused by environmental factors, exceeding recommended wiring distance or wire type, ambient electrical interference, or physical damage to the unit.

• Bring the door station to the JK-1MED and connect the A1/A2 terminals on the door station to the A1/A2 connections on the master station. This test will help verify the integrity of the wire, the wiring distance, and the hardware.
• Ensure wiring distance between door and master station is within 330′(100m) and is without outside electrical interference caused by high voltage wires ran in parallel with the intercom wires, or environmental interference such as exposed wire or standing water in a conduit.
• Meter the power supply of the JK-1MED, checking for ~18v DC. Also verify that this power supply is not being shared with 3rd party devices, such as a door lock. For more information about the power requirements of the JK Series, click here to view its installation manual.

The JK Series is intended for lower volume environments, such as homes or small offices. If the door station is located near a busy street, a loud piece of equipment like an air conditioning vent, it may be difficult to hear the person. There is a quick test to see if the problem is in the environment, or if it’s with the unit itself.

• Use the “push-to-talk” answering method, by pressing and holding the “talk” button for about 2 seconds when answering an incoming call. Doing this will enable a “walkie-talkie” method of communication, where the person at the master station must press the talk button down in order to speak. The person at the door station will not have to press anything to reply, however, they cannot speak when the master station is transmitting audio.

If communication is regained or improved, the environment may be too loud for this series of door station.