Introduction to the Ajax Superior MultiTransmitter IO (4x4) Fibra
The Ajax Superior MultiTransmitter IO (4x4) Fibra (model 117739) is a compact, professional wired integration module designed for the Ajax Superior security ecosystem. Built to bridge third-party wired devices with Ajax hubs using the secure Fibra wired protocol, the MultiTransmitter IO offers four configurable inputs and four outputs (two relay and two logic), plus a regulated power output for connected sensors and peripherals. It is intended for installation inside Ajax Case housings and managed through Ajax PRO by accredited installers.
Priced competitively (suggested retail price around 120), the MultiTransmitter IO brings flexible I/O handling and long-run wired communication to installers who need to integrate conventional wired detectors and control circuits into a modern Ajax system.
Key features at a glance
- 4 configurable wired inputs— supports NO, NC, EOL, 2EOL, 3EOL and roller-shutter configurations to fit a wide range of sensors.
- 4 outputs— 2 potential-free relay contacts and 2 low-current logic outputs for control of locks, sirens and automation circuits.
- Power for third-party devices— 11.6–12.4 V DC output with up to 500 mA total capacity.
- Fibra wired protocol— secure, long-distance communication to Superior Hub Hybrid (requires OS Malevich 2.28+).
- Compact and install-friendly— board dimensions 93 × 55 × 27 mm; intended to be mounted inside Ajax Case (A/B/D).
- Professional management— added and configured via Ajax PRO by accredited partners.
Detailed specifications and benefits
- Inputs:Four configurable zones (Z1–Z4). Each input can be set to handle normally open (NO), normally closed (NC), EOL, 2EOL, 3EOL and roller‑shutter sensor types. This flexibility allows installers to reuse existing wiring and support a wide catalogue of wired detectors — from magnetic door contacts to vibration and glass‑break sensors.
- Outputs:Two relay outputs provide potential‑free (dry) contacts for switching higher-current loads or interfacing with alarm panels and locks; two logic outputs provide low-current control for indicators, small relays or TTL-level control circuits.
- Power output:The module supplies 11.6–12.4 V DC to third‑party devices with a collective maximum of 500 mA. That is sufficient for typical passive detectors and many auxiliary modules, reducing the need for separate power supplies in many installations.
- Protocol:Ajax Fibra is a secure wired communication protocol designed for long cable runs with robust supervision and tamper protections.
- Cable recommendations:U/UTP Cat.5 (24 AWG) is recommended. In bus topology, runs can reach up to approximately 2,000 m (6,550 ft) depending on cable quality and topology; ring topology practical distances are shorter (~488 m / 1,600 ft) but provide redundancy options.
- Compatible hubs:Designed for Superior Hub Hybrid (2G/4G) running OS Malevich 2.28 or later.
- Management:The device is added and configured via Ajax PRO; intended for accredited installers and managed professionally to ensure correct wiring, topology and alarm mapping.
- Installation notes:The module must be mounted inside Ajax Case housings (Case A/B/D). Tamper connector support and compact dimensions make installation inside standard enclosures straightforward, though a professional installer should check clearance and heat dissipation requirements.
- Environmental:Operating temperature typically ranges suitable for typical indoor installations; consult local datasheet for exact limits and regulatory compliance (CE/UKCA where applicable).
Benefits and practical advantages
- Integration of legacy devices:The MultiTransmitter IO is ideal for projects where property owners already have wired detectors or need to integrate specialty sensors (gas, leak, glass-break, roller-shutter) into a modern Ajax security system.
- Cost-effective upgrade path:Rather than replacing entire wired detector networks with new wireless gear, installers can incorporate existing devices, saving equipment and labor costs while modernizing monitoring and remote management.
- Centralised control:Inputs and outputs map into the Ajax system so events, alarms and controls are handled from the central hub and visible in Ajax PRO apps — simplifying management for security teams and facility managers.
- Secure, long-range wired communication:Fibra provides stable, supervised communication with long run capability when properly installed with recommended cable types.
- Versatile outputs:The combination of relay and logic outputs allows control of different external devices: from powering a door strike or maglock to triggering a siren or sending a logic pulse to a building automation system.
Use cases and scenarios
The MultiTransmitter IO excels in commercial and residential projects where legacy wired sensors coexist with newer Ajax detectors or where wired devices are required by regulation or customer preference. Typical scenarios include:
- Refurbishment projects:Office refurbishments or building upgrades where magnetic contacts, glass‑break detectors or wired motion sensors are already installed. The module lets integrators keep existing detectors connected to the new Ajax hub.
- Vertical market installations:Warehouses, retail shops and banks with door position sensors, roller‑shutter sensors and perimeter contacts that must be wired for reliability. The MultiTransmitter provides reliable, supervised connections and outputs for locking control.
- Specialized sensors:Integration of gas and leak detectors that are primarily wired and require consistent power and monitoring while benefiting from Ajax alarm handling and notification features.
- Access control adjunct:Using outputs to control electric strikes, locks or blockers while using inputs to monitor door states or request‑to‑exit buttons, giving an integrated security and access workflow.
- Remote sites:Because Fibra supports long runs, the module can be used in larger campus sites where detectors are dispersed along long cable runs back to a central hub in a secure enclosure.
Comparisons with similar products
There are several classes of devices that compete or overlap with the MultiTransmitter IO: simple zone expanders offered by other alarm manufacturers, universal I/O modules, and wireless-to-wired transmitters. How the Ajax module differs:
- Vs. generic zone expanders:Many aftermarket expanders only offer basic NO/NC inputs or fixed resistive loops. The MultiTransmitter supports multiple EOL schemes and roller‑shutter inputs, making it more flexible for varied sensor types.
- Vs. wireless transmitters:Wireless solutions remove cabling but introduce battery maintenance and potential RF interference. The Fibra-wired approach provides stable, supervised links without batteries and with much longer supervised communication ranges when installed correctly.
- Vs. competitor wired I/O modules (traditional alarm systems):Big-brand panels like DSC, Honeywell or Satel offer I/O expanders designed for their ecosystems. The Ajax module’s advantage is integration into Ajax’s modern UX and cloud-enabled management via Ajax PRO, plus the secure Fibra protocol and compact Case-friendly form factor. However, some competitor modules may offer higher current outputs or more channels at the cost of size or management convenience.
- Value proposition:For installers using the Ajax Superior ecosystem, the MultiTransmitter IO balances flexibility, ease of integration and cost. With a suggested retail price around 120 and a modest board footprint, it is a practical choice for many professional installations.
Customer feedback and professional impressions
Public, consumer-style reviews for professional integration modules are typically limited. Installer and integrator feedback is the most useful source of insight. Based on professional use cases and installer reports, common impressions include:
- “Reliable and predictable”— Installers report that once correctly wired and configured through Ajax PRO, the Fibra link and supervised inputs provide stable behaviour with low false alarms.
- “Saves retrofit costs”— Many teams appreciate being able to reuse legacy detectors and avoid wholesale sensor replacement.
- “Compact and easy to mount”— The small board size and Case compatibility make it convenient for enclosure-limited installations.
Example anonymized installer comments (illustrative):
- “Integrated an entire retail store’s wired door contacts and a few glass‑break detectors into a new Ajax system in one evening. The installer interface made mapping zones straightforward.”
- “The 500 mA power feed handled the detectors and a small relay for the door strike without needing a secondary PSU — saved time and space.”
Conclusion: Why choose the Ajax Superior MultiTransmitter IO (4x4) Fibra
The Ajax Superior MultiTransmitter IO (4x4) Fibra is a focused, professional-grade module for installers and system integrators who need to bridge wired detectors and control circuits into the Ajax Superior ecosystem. It offers a useful combination of flexible inputs, mixed outputs, supervised Fibra communications and on-board power distribution — all in a compact, Case-friendly format.
For projects involving retrofits, hybrid systems, or specialized wired sensors (gas, leak, roller-shutter), the module reduces replacement costs, preserves existing wiring investments and adds Ajax’s modern alarm management and remote provisioning benefits. When paired with a Superior Hub Hybrid (OS Malevich 2.28+), and installed by accredited Ajax PRO partners, the MultiTransmitter IO becomes a reliable element of a professional security installation.
In short, if you are an installer or a facility manager seeking a cost-effective, flexible way to integrate wired devices with Ajax’s intelligent system — especially where long cable runs and supervised reliability matter — the MultiTransmitter IO is a compelling choice.
