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Ajax MultiTransmitter - 2 Way Wireless 18 Zone Hard Wired Input Expander, 240VAC Powered **Requires BATT12-7**

by Ajax

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MultiTransmitter Jeweller is an integration module for connecting third-party wired detectors and devices to an Ajax security system

  • It has 18 wired zones for connecting NC, NO, EOL, 2EOL and 3EOL devices.
  • The device is powered from the 110–240 V~ mains, and can also run on a 12 V⎓ backup battery. Can supply 10.5–15 V⎓ for connected detectors and devices.
  • Equipped with two tampers that protect it against dismantling. Jeweller detects jamming attempts, switches to the backup frequencies in case of interference, and allows Ajax wireless devices to run on battery power for years
  • MultiTransmitter communicates with a hub via an encrypted Jeweller radio protocol.
  • This is a TDMA technology developed by Ajax Systems for uninterrupted communication with devices.



Number of alarm/tamper zones18
Supported detect contact typesNO, NC (without R), EOL (NC with R), EOL (NO with R)
Resistance of the EOL resistor1kΩ to 7.5kΩ
Alarm signals processing modePulsed or bistable
Main power supply110-255v, 50/60Hz
Backup power12vDC
Supported battery typeBattery with 4 or 7 A/h capacity (not included),
Dimensions 150 × 64 × 94 mm
Detector power supply12vDC up to 1A for all detector power supply outputs
Protection against dismantlingTamper
Radio signal frequency band868.0-868.6MHz
depending on region
CompatibilityOperates with all Ajax hubs, and range extenders
Maximum radio signal powerUp to 7.29mW (2mW limit)
Radio signal rangeUp to 2,000m in line of site
Operating temperature rangeFrom -10°C to +40°C
Operating humidityUp to 75%
Dimensions196 x 238 x 100mm
WarrantyReplacement and repair
during 24 months
from the date of sale.
Learn more
Service life10 Years
Complete SetMultiTransmitter Board
Installation kit
Power cable
User guide