AJAX-MT-INDR-B
Ajax - MultiTransmitter Jeweller - Black Indoor module for connecting Wired alarms to Ajax systems
Overview:
MultiTransmitterModule for connecting wired alarm to Ajax and managing security via the app
The second life of an old wired alarm
We understand how difficult it is to decide on a wired alarm upgrade. It is a common situation when your system is still capable of protecting your property but is clearly outdated. Renovating with Ajax doesn't force you to leave behind the current equipment. It gives you a chance to build modern complex security based on existing wired equipment.
Features:
Security via smartphoneWith MultiTransmitter, system users get security control via app, data-rich notifications, and automation scenarios. An installer can set up the system or device in the PRO-app, both while on-site and remotely.
More Ajax features
Perimeter IR detectors, household gas sensors, thermostats, float sensors, and other devices are ready to expand the Ajax areas of use. Connect them to a hub via MultiTransmitter and manage the combined security system in the Ajax app.
Less hassle with automated security
Use automation scenarios so that the security system instantly responds to threats without waiting for police. Ajax will be armed by schedule, turn on the light by the alarm of a motion detector, switch off the potential cause of ignition at the first sign of fire. With MultiTransmitter, an old alarm system becomes part of a safe and smart home.
Data-rich alarms
With MultiTransmitter, you can specify the device name, the type of alarm and a room for each wired device. This makes notifications more informative - you know not just what happened but where. This information is displayed using push notification, SMS, and is also sent to the security company's monitoring station using an appropriate code. A total of 9 types of alarms are available: intrusion, fire alarm, auxiliary alarm, panic button, gas alarm, leakage, tamper alarm, malfunction, custom (service event).
Radio communication without reliability compromises
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. 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.
Security without barriers
When using radio signal range extenders, Ajax security system's radio network can cover up to 35 km2 . But if some rooms are impermeable to radio waves, connecting wired devices via MultiTransmitter is the best solution. The length of wires can reach 400 meters.
Protected against sabotage
MultiTransmitter will inform you instantly if the connected devices have been interrupted with short circuit, disconnection of the signal cable, or tampering alarm. 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 surface and removal of the lid.
- Instant connection loss detection with wired device (EOL)
- Free space in the body for a backup battery 7 Ah
- 2 tampers that detect dismounting and opening of the body
We made sure that the installation and setup process does not require any extra time or effort. Like other Ajax devices, MultiTransmitter connects to a hub in the app by scanning a QR-code. When connecting wired devices, you don't need to know the resistors' resistance values. The system will also warn you if a device was not connected correctly.
Specifications:
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Specifications![]() | |
| Product Code | AJAX-MT-INDR-B![]() |
| Compatibility | |
| Compatible hub models | All Ajax hubs |
| The Hub control panel does not support the 2EOL and 3EOL connection types. Other hub models require the OS Malevich firmware version 2.13 or higher to support such connection types. | |
| Compatible range extenders | All Ajax radio signal range extenders |
| Communication with a hub or range extender | |
| Jeweller communication technology | Proprietary wireless communication technology to transmit alarms and events. |
| It features: | |
| Two-way communication. | |
| Advanced anti-sabotage. | |
| Block encryption featuring a dynamic key. | |
| Instant notifications. | |
| Remote configuration via the Ajax apps. | |
| Frequency bands | 866.0 - 866.5 MHz |
| 868.0 - 868.6 MHz | |
| 868.7 - 869.2 MHz | |
| 905.0 - 926.5 MHz | |
| 915.85 - 926.5 MHz | |
| 921.0 - 922.0 MHz | |
| Depends on the sales region. | |
| Maximum effective radiated power (ERP) | up to 20 mW |
| Radio signal modulation | GFSK |
| Radio communication range | up to 2,000 m |
| Between an integration module and a hub/range extender in an open space. | |
| Calculate radio communication range | |
| Encrypted communication | All the data stored and transmitted are protected by block encryption with a dynamic key. |
| Radio frequency hopping | To prevent interception and jamming. |
| Wired devices connection | |
| Number of zones | 18 wired zones |
| Multiple devices can be connected to one zone. The number of connected devices depends on their power consumption. | |
| Type of connection | NC, NO, EOL |
| MultiTransmitter with a firmware version lower than 2.13. | |
| NC, NO, EOL, 2EOL, 3EOL | |
| MultiTransmitter with a firmware version 2.13 and higher. The Hub control panel does not support the 2EOL and 3EOL connection types. Other hub models require the OS Malevich firmware version 2.13 or higher to support such connection types. | |
| EOL resistance | from 1 kΩ to 7.5 kΩ with 100 Ω increment |
| MultiTransmitter with a firmware version lower than 2.13. EOL resistance is measured automatically in the Ajax PRO apps. | |
| from 1 kΩ to 15 kΩ for each resistor, up to 30 kΩ of total resistance | |
| MultiTransmitter with a firmware version 2.13 and higher. Resistance is measured automatically for each EOL resistor in the Ajax PRO apps. | |
| Cable length | up to 400 m |
| When using a signal cable with a 0.22 mm² copper-clad aluminium conductor. | |
| Operation mode | pulse, bistable |
| Adjusted by a PRO or user with admin rights in the Ajax app. | |
| Event type | 9 types of events for each wired zone |
| Intrusion | |
| Fire | |
| Medical help | |
| Panic button | |
| Gas alarm | |
| Tamper alarm | |
| Malfunction | |
| Leakage | |
| Custom | |
| Adjusted by a PRO or user with admin rights in the Ajax app. | |
| Recommendations | |
| Recommendations | The device is powered from the 110-240 V~ mains and designed for indoor use only. |
| Anti-sabotage protection | |
| Tamper alarm | Two tampers to detect the MultiTransmitter casing opening and alert about detachment from the wall. |
| Protection against spoofing | with the integration module authentication |
| Communication loss detection | within 36 seconds |
| Between a hub or range extender and MultiTransmitter. The detection time depends on the Jeweller or Jeweller/Fibra settings. | |
| Instant detection of wired connection loss, short circuits, and malfunctions | when using EOL/2EOL/3EOL connection type |
| Depends on the connection type. | |
| Power supply | |
| MultiTransmitter power supply | 100-240 V~, 50/60 Hz |
| MultiTransmitter backup power supply | 12 V⎓, up to 7 Ah capacity with a full charge cycle of up to 30 hours |
| The backup battery is not included in the set. | |
| Connected devices power supply | 10.5-15 V⎓, up to 1 A of total maximum current consumption |
| Four power lines powered by MultiTransmitter: one for fire detectors, and three for other devices. | |
| Casing | |
| Dimensions | 192 x 238 x 100 mm |
| Weight | 805 g |
| Operating temperature range | from -10°C to +40°C |
| Operating humidity | up to 75% |
| Protection class | IP40 |
| Colours | |
| Colours | Black |
| White | |
| Complete set | |
| Complete set | MultiTransmitter board |
| Casing | |
| Power cable | |
| Screw terminal block Adapter (only for INCERT compliance) | |
| 12 V⎓ battery connection cable | |
| Installation kit | |
| Quick Start Guide | |

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