Ajax MultiTransmitter

Part Number: AJ-MULTI-B Categories , , ,

The Ajax MultiTransmitter is a module to integrate third-party wired detectors with Ajax security system. It has 18 wired zones, each of which can be configured in the Ajax app. The detectors connected to the zones can be active 24/7, operate with entering or exiting delay, activate sirens if necessary, and participate in automation scenarios. The old or existing panel can be wired into the MultiTransmitter to implement the system onto the existing Ajax Network.

Protected against sabotage
MultiTransmitter will inform you instantly if the connected devices have been interrupted with power failure, disconnection of the signal cable, or tampering. Electricity loss at the site will not be a problem either — the backup battery can provide power to devices for up to 4 days. MultiTransmitter body itself is equipped with two tampers that respond to removal of the integration module from the mount and removal of the lid.

  • Instant connection loss detection with wired device (EOL)
  • Cavity in the body for a backup battery 7 A⋅h
  • 2 tampers that detect dismounting and opening of the body


Wired alarm renovation
Replacing the old security control panel, the module connects wired devices to a hub and makes them a full-fledged part of Ajax. MultiTransmitter is a step towards awareness and reliability. For a security company, it opens the possibility to configure the equipment remotely, and users get all the benefits of managing the system through an app.

Number of alarm/tamper zones18


Supported detector contact typesNO, NC (without R), EOL (NC with R), EOL (NO with R)
Resistance of the EOL resistor1 kΩ to 7.5 kΩ
Alarm signals processing modePulsed or bistable
Main power supply110–255 V, 50/60 Hz


Backup power
12 V DC
Supported battery typeBattery with 4 or 7 A⋅h capacity (not included)
Detector power supply12 V DC, up to 1 A for all detector power supply outputs
Protection against dismantlingTamper
Radio signal frequency band868.0–868.6 MHz or 868.7–869.2 MHz, depending on the sales region
Operates with all Ajax hubs, range extenders
Maximum radio signal powerUp to 7.29 mW (25 mW limit)
Radio signal rangeUp to 2,000 m in the line of sight
Operating temperature rangeFrom -10°С to +40°С
Operating humidity
Up to 75%
196 × 238 × 100 mm
Weight805 g
Complete set




MultiTransmitter board
Installation kit
Power cable
User Guide