HySecurity MX5552, SmartTouch 720 Controller
The HySecurity MX5552 is the SmartTouch 720 controller board for select HySecurity and Nice HySecurity gate operator systems. It is commonly listed as SmartTouch 720 Controller and is part of the SmartTouch 720/725 controller platform used in compatible HySecurity operator applications.
The controller board is the main logic center of the operator. It manages operator programming, inputs, outputs, diagnostics, accessory communication, monitored safety devices, gate movement commands, relay settings, loop detector integration, and service information. In a properly configured operator, the SmartTouch 720 controller works with the drive system, limits, sensors, photo eyes, safety edges, loop detectors, receivers, keypads, access control devices, and power system to operate the gate safely and consistently.
HySecurity documentation references MX5552 alongside MX5626 in SmartTouch 720/725 firmware and service bulletins. SlideDriver II parts documentation also lists MX5552 as the SmartTouch 720 controller in the electrical components section. Because controller fitment and setup depend on the exact operator family and firmware platform, MX5552 should be selected by HySecurity part number and operator parts documentation.
What This Controller Does
The MX5552 SmartTouch 720 controller manages the operating logic for compatible HySecurity gate operators. It receives commands from access control devices, remotes, keypads, loop detectors, monitored entrapment devices, and operator controls, then coordinates operator movement and system response according to the programmed settings.
If the controller is damaged, miswired, improperly programmed, exposed to water, affected by heat damage, or running incompatible firmware, the operator may fail to run, display faults, ignore inputs, lose accessory communication, fail to recognize monitored devices, show incorrect status, or operate inconsistently. Those symptoms can also be caused by low voltage, bad power supply, wiring faults, damaged sensors, failed loop detectors, incorrect limits, motor or pump pack issues, relay problems, or accessory wiring problems.
Compatible With
The HySecurity MX5552 is intended for select HySecurity / Nice HySecurity operators where the SmartTouch 720 controller is specified. Compatibility depends on the operator model, controller generation, firmware version, accessory configuration, wiring harness, monitored safety setup, and current HySecurity parts documentation.
- Select HySecurity SlideDriver II applications where the parts diagram lists MX5552
- Select SlideDriver II electrical component configurations where MX5552 is listed as the SmartTouch 720 controller
- SmartTouch 720 controller replacement applications where the original board is marked, listed, or cross-referenced as MX5552
- Applications where HySecurity documentation specifically calls for the SmartTouch 720 controller rather than the SmartTouch 725 controller
Do not assume MX5552 fits every HySecurity SlideDriver II, SlideDriver, SlideSmart, SwingSmart, Smart DC, Smart Touch, SmartCNX, HydraSwing, HydraLift, StrongArm, or barrier gate operator. Older and newer HySecurity systems may use different controller boards, display boards, keypads, firmware, terminal layouts, harnesses, and programming structures.
MX5552 vs. Related HySecurity Controller Parts
HySecurity uses several controller platforms and related control-board parts. MX5552 should not be substituted for another controller unless the parts diagram and firmware documentation confirm it.
- MX5552: SmartTouch 720 controller board for select HySecurity applications.
- MX5626: SmartTouch 725 controller board, not the same part.
- MX4345: SmartCNX controller reference used in SmartCNX operator families, not the same part.
- MX000585 / MX000487: Older Smart Touch Controller / power supply board references, not the same part.
- Display or keypad boards: Related interface components, not the same as the main SmartTouch 720 controller unless specifically supplied as part of a controller package.
- I/O expansion modules: Add relay/output capacity where used, but are not the main controller board.
Controller boards should be matched by part number, operator model, wiring configuration, firmware platform, and service documentation. Similar names such as Smart Touch, SmartTouch 720, SmartTouch 725, SmartCNX, and Smart DC can refer to different controller generations.
SmartTouch 720 Features and Service Notes
The SmartTouch 720 platform is part of the SmartTouch 720/725 controller family used in compatible HySecurity commercial and industrial gate operators. Feature availability depends on the operator, firmware, installed accessories, and service configuration.
- SmartTouch 720/725 firmware support where applicable
- Controller-based programming, diagnostics, inputs, outputs, and system setup
- Support for compatible monitored safety device configurations where required by the operator
- Support for HySecurity accessory and detector configurations where supported by the installed operator
- Firmware/service behavior that may differ from the SmartTouch 725 controller in certain connectivity-related menu items
Because some SmartTouch 720 and SmartTouch 725 features may differ, do not assume the two boards have identical menu options, connectivity behavior, or accessory support. Match the controller to the operator documentation and current HySecurity firmware requirements.
Heat and Sun Exposure Note
HySecurity has issued service information noting that SmartTouch 720/725 controller plastics may deform under long direct sunlight exposure in high-heat conditions. The operator may remain functional and accessible through supported app access where configured, but the physical buttons can be affected.
When servicing or replacing MX5552, keep the operator electrical enclosure properly covered after work is complete. Do not leave the controller exposed to direct sun for long periods during service. If the enclosure cover, chassis cover, or shielding is missing or damaged, correct that issue so the replacement controller is not exposed unnecessarily.
Not Intended For
- Universal HySecurity controller replacement
- SmartTouch 725 applications that require MX5626
- SmartCNX controller applications that require MX4345 or another SmartCNX board
- Older Smart Touch Controller applications that require MX000585, MX000487, or another legacy board
- Replacing display-only boards, keypad-only assemblies, I/O expansion modules, power supplies, loop detectors, relays, receivers, or wiring harnesses unless those parts are separately specified
- Correcting faults caused by bad power supply, damaged wiring, failed monitored sensor, incorrect accessory wiring, failed loop detector, limit setup problems, motor or pump pack faults, or gate hardware issues without diagnosis
Important Compatibility Warning
MX5552 should be selected by HySecurity part number, controller generation, operator model, firmware requirements, and wiring configuration. A controller that appears similar may not have the correct firmware support, terminals, display interface, accessory support, or communication features for the installed operator.
Before replacing the controller, document existing wiring, menu settings, input assignments, relay settings, detector setup, monitored safety device settings, firmware version, and fault history. If those items are not captured before removing the old board, setup can take longer and the operator may not behave the same after replacement.
Features & Specifications
| Feature / Specification | Details |
| Manufacturer | HySecurity / Nice HySecurity |
| Part Number | MX5552 |
| Product Type | Main controller board |
| Common Description | SmartTouch 720 Controller |
| Controller Platform | SmartTouch 720 |
| Related Controller | MX5626 SmartTouch 725 controller, not the same part |
| Common Application Reference | Select SlideDriver II applications where the parts diagram confirms MX5552 |
| Firmware Reference | Referenced in SmartTouch 720/725 firmware documentation; feature availability may depend on firmware and operator configuration |
| Connectivity Note | Firmware documentation notes support for the SmartTouch 720 board and hiding some menu items related to connectivity |
| System Function | Controls operator logic, inputs, outputs, monitored safety device setup, accessory commands, programming, and diagnostics in compatible systems |
| Heat Exposure Note | HySecurity service information references SmartTouch 720/725 plastic deformation risk under long direct sunlight exposure in high-heat conditions |
| Selection Method | Match by HySecurity part number, operator model, controller generation, firmware requirement, and wiring configuration |
| Included Items | SmartTouch 720 controller board; verify current package contents before publishing software, USB drive, mounting hardware, labels, or instructions as included |
| Not Included Unless Listed | Power supply, I/O expansion module, loop detectors, receivers, photo eyes, safety edges, wiring harnesses, display/keypad assemblies, enclosure covers, and operator hardware unless separately listed |
Also Known As / Related Part Numbers
- MX5552
- HySecurity MX5552
- Nice HySecurity MX5552
- HySecurity SmartTouch 720 Controller
- HySecurity SmartTouch 720 Controller Board
- HySecurity Smart Touch 720 Controller
- HySecurity Smart Touch 720 control board
- HySecurity SlideDriver II SmartTouch 720 controller
- HYS-MX5552, related distributor SKU format
- MX5626, related SmartTouch 725 controller, not the same part
- MX4345, related SmartCNX controller, not the same part
- MX000585, related older Smart Touch Controller reference, not the same part
- MX000487, related older Smart Touch power supply board reference, not the same part
- MX5306, related I/O expansion module, not the same part
Related Parts and Accessories
- mx5626-smarttouch-725-controller-board.html">HySecurity MX5626 SmartTouch 725 controller where the SmartTouch 725 controller version is specified
- mx5306-smarttouch-io-expansion-module.html">HySecurity MX5306 I/O expansion module where additional relay outputs are required and supported
- HySecurity power supply components where the controller is not receiving correct DC power
- HySecurity vehicle detector modules where loop detector inputs are being configured
- Monitored photo eyes and monitored edge sensors matched to the operator and current UL 325 requirements
- Controller enclosure covers or chassis covers where the board has been exposed to heat, sun, water, or debris
- Wiring harnesses, terminal blocks, fuses, relays, and accessory wiring where electrical faults are present
Technician Note
Do not replace the controller board until the power supply, fuse protection, accessory wiring, monitored safety devices, loop detector boards, receiver wiring, motor or pump pack wiring, and input terminals have been checked. Many board complaints are caused by low voltage, shorted accessory wires, miswired sensors, failed loop detectors, or water damage inside the enclosure.
Before removing the old controller, record the menu settings, relay assignments, input configuration, monitored sensor type, loop detector setup, firmware version, fault history, and any special site programming. This makes the replacement setup cleaner and reduces the chance of callbacks.
Before Ordering, Confirm
- Confirm the needed HySecurity part number is MX5552.
- Confirm the original board is a SmartTouch 720 controller.
- Confirm the operator model and serial number.
- Confirm the operator is a compatible application where MX5552 is listed in the parts diagram.
- Confirm the operator does not require MX5626 SmartTouch 725, MX4345 SmartCNX, Smart DC, or an older Smart Touch controller board instead.
- Confirm the firmware/software requirements for the installed operator.
- Confirm the power supply output, fuses, wiring harnesses, accessory wiring, and monitored safety devices are not the actual cause of the issue.
- Confirm whether software, USB drive, mounting hardware, labels, instructions, wiring harnesses, or enclosure parts are included or must be ordered separately.
Installation and Service Notes
Disconnect operator power and secure the gate before servicing the controller board. Label wiring and photograph the existing controller before disconnecting terminals. Handle the board carefully and avoid static discharge, moisture, metal shavings, loose wire strands, and tool contact across terminals.
After installation, verify correct power, firmware/software status, input setup, monitored sensor configuration, relay assignments, loop detector setup, limits, open/close behavior, entrapment protection, and all accessory commands. The gate should be tested through full travel before being returned to service.
Professional Advisory
Controller replacement affects the operators programming, safety device monitoring, accessory wiring, relay behavior, and gate movement. A qualified HySecurity gate technician should handle this repair if the operator has multiple accessories, monitored entrapment devices, loop detectors, primary/secondary setup, or unexplained faults.
Do not bypass monitored entrapment protection, photo eyes, safety edges, limits, loop inputs, relays, fuses, disconnects, controller protections, or accessory wiring to make the gate run. The controller and safety system should be configured correctly and fully tested before the operator is returned to service.
Product Questions & Answers
What is the HySecurity MX5552 used for?
The HySecurity MX5552 is the SmartTouch 720 controller board used in select HySecurity gate operators where the parts diagram lists this controller.
Is MX5552 the same as MX5626?
No. MX5552 is the SmartTouch 720 controller. MX5626 is the related SmartTouch 725 controller. They should not be treated as interchangeable without HySecurity documentation.
Is MX5552 the same as a SmartCNX controller?
No. MX5552 is a SmartTouch 720 controller. SmartCNX applications commonly use a different controller platform, such as MX4345 where specified.
What should I check before replacing MX5552?
Check the power supply, fuses, wiring harnesses, accessory wiring, monitored safety devices, loop detectors, receiver wiring, inputs, relays, and fault history before assuming the controller board is the failed component.
Can sunlight or heat damage the SmartTouch 720 controller?
HySecurity service information notes that SmartTouch 720/725 controller plastics can deform under long direct sunlight exposure in high-heat conditions. Keep the operator enclosure covered after service.
Should I record the old board settings before replacement?
Yes. Record menu settings, relay assignments, input setup, monitored sensor settings, detector setup, firmware version, and fault history before removing the old controller.
