NICE EPMB BlueBUS Gate Photocell Safety Sensors – 15 M

NICE EPMB Two-Wire BlueBUS Gate Safety Photocells UAE

The NICE EPMB Era BlueBUS Photocell Sensors are a genuine NICE pair of infrared safety photocells designed for compatible automatic sliding gates, swing gates, parking barriers, garage doors and other NICE automation systems using BlueBUS technology.

The EPMB system consists of one TX transmitter and one RX receiver installed opposite each other across the protected passage. The transmitter creates an infrared beam and the receiver continuously monitors it. When a vehicle, person or other obstacle interrupts the beam, the EPMB sends the corresponding safety information through the BlueBUS network to the automation control unit.

Unlike conventional photocells that require separate power and relay wiring, the NICE EPMB uses only two BlueBUS wires for both power supply and digital communication. BlueBUS devices are connected in parallel, polarity does not need to be observed, and each photocell pair is identified by its assigned jumper address during the control unit learning procedure.

NICE EPMB Key Features

• Original NICE Era BlueBUS photocell pair
• Official model: EPMB
• TX transmitter + RX receiver
• Infrared obstacle detection
• NICE BlueBUS two-wire connection
• Power and communication through the same two wires
• No polarity requirement on BlueBUS connection
• Devices connected in parallel
• Addressable through configuration jumpers
• Nominal range up to 15 m
• Maximum TX-RX angular offset approximately ±5°
• Obstacle signalling designed to remain reliable in adverse weather conditions
• Automatic synchronisation through BlueBUS architecture
• IP44 protection rating
• Operating temperature -20°C to +55°C
• Compact 50 × 29 × 80 mm housing
• Approx. 140 g per pair
• Compatible with suitable NICE BlueBUS automation controllers

NICE EPMB Technical Specifications

Brand	NICE
Series	Era Photocell M
Model	EPMB
Product Type	BlueBUS Infrared Safety Photocell Pair
Components	1 × TX Transmitter + 1 × RX Receiver
Connection Technology	NICE BlueBUS
Wiring	2 Wires for Power and Communication
Polarity	Not Required on BlueBUS
Power Supply	From Compatible NICE BlueBUS Network
Output	Digital Communication Through BlueBUS
Estimated Range	Up to 15 m
Maximum TX-RX Offset	Approx. ±5°
Photocell Adjustment	Fixed
Protection Rating	IP44
Operating Temperature	-20°C to +55°C
Dimensions	50 × 29 × 80 mm
Weight	Approx. 140 g per Pair

What Is NICE BlueBUS?

BlueBUS is NICE's two-wire communication system for compatible automation accessories.

Instead of providing separate wiring for accessory power and command signals, compatible devices share the same two BlueBUS conductors.

This simplifies installation and allows the control unit to identify connected devices individually after the appropriate learning procedure.

Only Two Wires Required

One of the main advantages of the NICE EPMB is the simplified two-wire BlueBUS connection.

The same pair of conductors carries both electrical power and communication data.

This can significantly reduce wiring complexity compared with conventional photocells that require dedicated supply conductors plus relay-output wiring.

No Polarity Requirement

NICE BlueBUS devices can normally be connected without observing polarity on the two BlueBUS conductors.

This can make installation quicker and reduce wiring errors.

BlueBUS Devices Connected in Parallel

Compatible BlueBUS devices are connected in parallel on the same two BlueBUS wires.

The control unit then recognises the devices during its learning procedure.

Photocell Addressing

When several EPMB photocell pairs are installed, each TX and RX pair must be assigned the correct BlueBUS address using the internal configuration jumpers.

The transmitter and receiver belonging to the same photocell pair must use the same address configuration.

Two different pairs should not be assigned the same address unless specifically required by the control-unit installation instructions.

Control Unit Learning Procedure

After adding, removing or changing the address of an EPMB photocell, the compatible NICE control unit must normally perform a BlueBUS device learning procedure.

This allows the controller to identify the connected photocells and assign their intended safety functions.

15 Metre Detection Range

NICE specifies an estimated detection distance of up to 15 metres for the EPMB pair.

This is suitable for most residential driveways, sliding gates, swing gates, parking barriers and commercial entrances.

Maximum TX-RX Offset ±5°

The official NICE technical specification states that the EPMB maintains its rated operating range with a maximum transmitter-to-receiver offset of approximately ±5°.

Correct physical alignment remains essential for reliable operation.

Infrared Obstacle Detection

The TX unit transmits an infrared beam toward the RX unit.

If the beam is interrupted, the EPMB informs the control unit through the BlueBUS network.

The Control Board Determines Gate Behaviour

The photocell itself does not directly reverse the motor.

It reports the obstacle condition to the automation controller.

The controller then determines the safety response according to the photocell address and programmed function.

Depending on the system, the response may include:

• Preventing gate closure
• Stopping movement
• Reversing movement
• Reopening the gate
• Stopping during opening
• Restarting after the beam becomes clear

Photocell Function Depends on BlueBUS Address

BlueBUS allows the automation controller to distinguish between photocells positioned in different safety zones.

For example, depending on the control unit and installation layout, photocells may be configured as:

• FOTO
• FOTO 1
• FOTO 2
• Internal photocell
• External photocell
• Opening safety photocell
• Closing safety photocell

Always follow the exact control-unit manual for the permitted jumper addresses and resulting safety behaviour.

Automatic Synchronisation

Nice BlueBUS architecture helps manage multiple photocells and is designed to prevent optical interference between correctly installed photocell pairs.

This makes multiple-sensor installations easier than conventional independent photocell systems.

NICE EPMB Is Not EPM

This distinction is very important.

NICE EPMB = BlueBUS digital photocell.

NICE EPM = conventional photocell with separate power supply and relay output.

The two models should not be described as electrically interchangeable.

NICE EPMB vs EPM

Feature	NICE EPMB	NICE EPM
Technology	BlueBUS	Conventional Wired
Connection	2 BlueBUS Wires	Separate Power + Relay Wiring
Power Supply	From BlueBUS Network	Selectable External AC/DC Supply
Safety Output	Digital BlueBUS Communication	Relay Contact
Polarity	No BlueBUS Polarity	According to Wiring Requirements
Nominal Range	Up to 15 m	15 m
Protection	IP44	IP44

Do Not Use Conventional EPM Specifications on EPMB

Do not copy the following EPM specifications onto the EPMB page:

• 12V / 24V AC/DC selectable supply
• 25 mA RX / 30 mA TX figures
• 500 mA / 48V relay-output specification
• COM / NC / NO wiring

Those specifications belong to conventional photocell versions and are not the correct way to describe the BlueBUS connection of the EPMB.

EPMB with NICE ROBUS

The EPMB is commonly used with compatible NICE ROBUS sliding gate control units equipped with BlueBUS.

NICE also supplies EPMB photocells in current ROBUS kit configurations, confirming the model as a standard BlueBUS safety accessory for suitable ROBUS systems.

EPMB with New ROBUS RBS Series

The EPMB is particularly suitable for current NICE ROBUS BlueBUS systems such as compatible RBS-series installations.

After connection, the control unit must learn the EPMB device according to its installation procedure.

EPMB with Older RB600 / RB1000 Systems

Older NICE ROBUS control units such as compatible RBA3-based systems also use BlueBUS and can work with suitable BlueBUS photocells.

The exact control-board manual should still be checked before installation.

EPMB with NICE RUN

Compatible NICE RUN sliding gate controllers supporting BlueBUS can use EPMB photocells as part of their safety system.

EPMB with NICE MC824H

The NICE MC824H is a 24V control unit with BlueBUS device support.

EPMB is therefore the correct connection family for standard BlueBUS photocell installation on compatible MC824H systems.

EPMB with NICE TOONA

For NICE TOONA 24V motors controlled by an MC824H or another suitable BlueBUS controller, EPMB photocells can be integrated through the controller's BlueBUS terminals.

The motor itself does not determine photocell compatibility—the control unit does.

EPMB with NICE WINGO

Compatible NICE WINGO installations using a BlueBUS-capable control unit can use EPMB photocells.

Do not claim universal compatibility with every WINGO kit because some control-unit generations use conventional safety inputs instead.

EPMB with NICE Parking Barriers

Many current NICE parking barrier controllers support BlueBUS safety devices.

Where supported, the EPMB can detect a vehicle or obstacle across the protected beam and send the corresponding safety status to the barrier controller.

EPMB Is Not a Vehicle Loop Detector

Photocells and inductive vehicle loops serve different purposes.

EPMB detects interruption of an infrared beam.

A loop detector senses a vehicle through an inductive loop installed in the road surface.

For many parking-barrier installations, both technologies may be used together as part of the complete access and safety design.

Sliding Gate Safety Application

For a sliding gate, one EPMB pair can be installed across the driveway to monitor the closing area.

Additional photocells may be required depending on gate geometry, opening hazards and the overall safety assessment.

Swing Gate Safety Application

Swing gates can create several potential hazard zones because the leaves move through an arc.

BlueBUS addressing allows multiple photocells to be assigned different safety roles where supported by the controller.

Parking Barrier Safety Application

The EPMB can be installed across the vehicle lane to monitor the area beneath or near a barrier arm.

The exact response during beam interruption depends on the barrier control-unit programming.

Garage Door Safety Application

Compatible NICE garage-door controllers with BlueBUS support can use the EPMB where the product manual allows external BlueBUS photocells.

IP44 Outdoor Protection

The official NICE technical specification gives the EPMB a protection rating of IP44.

This makes it suitable for correctly installed outdoor gate applications.

Do not describe the unit as fully waterproof or submersible.

Operating Temperature -20°C to +55°C

NICE's current technical catalogue lists an operating range of -20°C to +55°C for EPMB.

This is the value I recommend using on your page.

Suitable for UAE Gate Installations

The EPMB can be used in UAE gate automation when installed within its specified environmental limits and according to NICE instructions.

For exposed outdoor locations, ensure:

• Correct mounting
• Proper cable entry
• Secure covers
• Stable posts
• Clean optical surfaces
• Protection from physical impact

50 × 29 × 80 mm Dimensions

The official EPMB dimensions are approximately 50 × 29 × 80 mm.

This compact format makes the photocells suitable for gate pillars, walls and compatible NICE photocell posts.

140 g Pair Weight

The official listed weight is approximately 140 grams for the pair.

EPMB Is a Fixed Photocell

The standard EPMB is a fixed optical photocell.

If greater optical adjustment is required, NICE provides separate orientable BlueBUS variants.

NICE EPMB vs EPMOB

Feature	EPMB	EPMOB
Technology	BlueBUS	BlueBUS
Nominal Range	Up to 15 m	Up to 15 m
Optical Adjustment	Fixed	Approx. 30° on all axes
Dimensions	50 × 29 × 80 mm	50 × 38 × 80 mm
Weight	140 g	160 g

NICE EPMB vs EPMAB

The EPMAB is the BlueBUS anti-intrusion / more robust metal-body version, while EPMB is the standard compact housing.

If additional physical protection against impact or tampering is required, use the actual EPMAB model rather than describing EPMB as an anti-vandal metal photocell.

NICE EPMB vs EPMORB

The EPMORB uses BlueBUS with a reflective photocell arrangement and reflector, while EPMB uses a conventional TX and RX pair positioned opposite each other.

Choose the photocell type according to site wiring and installation geometry.

Installation Alignment

TX and RX must be mounted facing each other with a clear optical path.

After physical installation, verify:

• Correct vertical alignment
• Correct horizontal alignment
• Stable mounting
• No vegetation blocking the beam
• No excessive angular offset
• Reliable detection when the beam is interrupted

BlueBUS Wiring Procedure

A typical installation involves:

1. Disconnecting power to the automation.
2. Mounting the TX and RX units.
3. Setting matching address jumpers on the TX and RX pair.
4. Connecting both units to the BlueBUS two-wire network.
5. Restoring power.
6. Running the control unit's BlueBUS device learning procedure.
7. Testing photocell response during gate operation.

No COM / NO / NC Terminals

Do not describe EPMB wiring using conventional COM, NO and NC relay terminals.

The EPMB communicates digitally through BlueBUS.

If a control board only provides conventional photocell relay inputs, use the correct conventional photocell model or an approved NICE interface where applicable.

Gate Does Not Move After EPMB Installation

If a gate stops operating after EPMB installation, check:

• BlueBUS wiring continuity
• Correct jumper addresses
• Matching TX and RX address
• Photocell alignment
• Control-unit BlueBUS LED
• Whether device learning was completed
• Whether another pair has the same address

Gate Closes with Photocell Beam Blocked

If the safety response is incorrect, check the BlueBUS address assigned to the photocell and the control unit's programmed logic.

The safety behaviour depends on the photocell function recognised by the control unit.

Photocell Works in the Wrong Gate Direction

If a photocell appears to operate during the wrong direction of movement, do not swap the TX and RX units expecting the safety logic to reverse.

Verify the BlueBUS jumper address and control-unit configuration.

Intermittent Photocell Fault

Intermittent EPMB problems can be caused by:

• Incorrect alignment
• Excessive TX-RX offset
• Loose BlueBUS connections
• Water ingress
• Dirty optical covers
• Moving posts
• Damaged cable
• Incorrect duplicate addresses

Cleaning and Maintenance

Periodically inspect and clean the EPMB optical covers.

Check for:

• Dust
• Sand
• Spider webs
• Water or condensation
• Loose covers
• Misalignment
• Damaged mounting points

Safety Testing After Installation

After wiring and learning the EPMB devices, perform a complete functional safety test.

Interrupt the beam during the relevant gate movement and verify that the automation responds according to the intended controller logic.

Photocells should form part of the complete safety design and should not be treated as the only safety measure required for every installation.

Recommended NICE EPMB UAE Package

• 1 × NICE EPMB TX Transmitter
• 1 × NICE EPMB RX Receiver
• Mounting Accessories if Included in Current Factory Box
• Installation Instructions if Included

Photocell posts, BlueBUS cable and professional installation should be listed separately unless physically included in your package.

NICE EPMB Installation UAE

Professional supply, replacement and installation support is available for compatible NICE BlueBUS gate automation systems.

Service is available across Dubai, Sharjah, Abu Dhabi, Ajman, Ras Al Khaimah, Fujairah, Umm Al Quwain and Al Ain.

Why Choose NICE EPMB?

• Original NICE BlueBUS accessory
• Only two wires required
• Power and communication on the same network
• No BlueBUS polarity requirement
• Individual photocell addressing
• Automatic device recognition after learning
• Designed for multiple photocell installations
• Up to 15 m operating range
• Approx. ±5° maximum TX-RX offset
• IP44 protection
• -20°C to +55°C operation
• Compact 50 × 29 × 80 mm housing
• Approx. 140 g per pair
• Suitable for compatible NICE BlueBUS automation systems

Buy NICE EPMB BlueBUS Photocells UAE

Buy the NICE EPMB BlueBUS gate photocell safety sensors in UAE for compatible automatic sliding gates, swing gates, garage doors and parking barriers.

Supply, installation, replacement and technical support are available throughout Dubai, Sharjah, Abu Dhabi, Ajman, Al Ain, Ras Al Khaimah, Fujairah and Umm Al Quwain.

Frequently Asked Questions

What is NICE EPMB?
NICE EPMB is a pair of BlueBUS infrared safety photocells consisting of one TX transmitter and one RX receiver.

What is the operating range?
NICE specifies an estimated range of up to 15 metres.

What is the maximum TX-RX offset?
Approximately ±5° according to NICE technical data.

Is EPMB BlueBUS?
Yes. EPMB is specifically the NICE BlueBUS version.

How many wires does EPMB require?
Only two BlueBUS conductors are required for both power and communication.

Does BlueBUS have polarity?
Compatible NICE BlueBUS wiring does not require polarity to be observed.

Is EPMB a 12V or 24V photocell?
Do not describe EPMB by a conventional external supply voltage. It receives its power directly from the compatible NICE BlueBUS network.

Does EPMB have COM, NO and NC terminals?
No. It sends safety information digitally through BlueBUS rather than using a conventional relay output.

Is EPMB the same as EPM?
No. EPMB is BlueBUS. EPM is the conventional relay-output version.

What is the IP rating?
The official rating is IP44.

What is the operating temperature?
Approximately -20°C to +55°C.

What are the dimensions?
Approximately 50 × 29 × 80 mm.

What is the weight?
Approximately 140 g per pair.

Can EPMB work with NICE ROBUS?
Yes, with compatible ROBUS control units equipped with BlueBUS.

Can EPMB work with MC824H?
Yes. MC824H supports BlueBUS devices and EPMB is the appropriate photocell family for suitable installations.

Can I connect EPMB to a normal photocell input?
Not directly. EPMB requires a compatible BlueBUS network. For conventional relay inputs, use the appropriate conventional photocell model or approved interface.

Why must EPMB be learned by the controller?
BlueBUS devices are individually recognised by the automation control unit, so adding or removing a device normally requires the controller's device-learning procedure.

Do you provide NICE EPMB installation in UAE?
Yes. Installation and troubleshooting support is available for compatible NICE BlueBUS gate and barrier systems throughout the UAE.