JABLOTRON / JA-121T
Jablotron JA-121T RS485 Bus Interface
Jablotron JA-121T RS485 bus interface for JA-100 series panels, the required companion of the Elausys JA-KNX gateway. Provides the isolated RS485 link the gateway uses to read zones, sections and PG outputs and to arm, disarm and switch PGs from KNX.
The product
Designed for your installation.
The Jablotron side of the JA-KNX
The JA-121T is Jablotron's RS485 interface module for the JA-100 series bus. The Elausys JA-KNX connects to its A/B terminals and exchanges zone, section and PG data with the panel. Without a JA-121T the panel has no serial port — order it with the gateway if the installation does not have one yet.
What it does
- RS485 port on the JA-100 bus, set to 9600 baud for the JA-KNX.
- Sends data on status change or on request.
- 4 kV galvanic isolation between the alarm bus and the gateway.
- One address on the Jablotron bus, enrolled in F-Link.
Technical proof
- Panels: Jablotron 100 series (JA-100 / JA-100+)
- Input side: Jablotron bus, 12 VDC (9–15 V), 15 mA standby / 20 mA max
- Output side: RS485, 6–28 VDC, 15 mA nominal; termination resistor is built into the JA-KNX
- Settings for the JA-KNX: 9600 baud
- Programming: F-Link
More information
Specifications
- Reference
- JA-121T
- Manufacturer
- JABLOTRON
- Manufacturer: Jablotron
- Panels: Jablotron 100 series
- Interface: RS485, 9600 baud
- Galvanic isolation: 4 kV
- Input side: 12 VDC (9–15 V), 15 mA standby / 20 mA max
- Output side: 6–28 VDC, 15 mA nominal
- Bus address: 1 position
- Programming: F-Link
- Used with: Elausys JA-KNX
Key features
- Jablotron RS485 module required for the JA-KNX gateway
- Addressable module on the JA-100 bus
- 4 kV galvanic isolation
- Data on change or on request
- 12 VDC from the panel bus 15-20 mA
- Output side 6-28 VDC
- Installs in the Jablotron panel
Documents & support
Find the available manuals and technical resources in product support.
Browse product supportFAQ
Frequently Asked Questions
Is it included with the JA-KNX?
No. It is sold separately, here or by your Jablotron distributor.
Do I need a termination resistor?
No, it is built into the JA-KNX.
Where does it go?
Inside or next to the Jablotron panel; the JA-KNX sits beside it or on a DIN rail with the DIN-2TE.