EMX 1152-1 IRB-4X Infrared Photoeye Safety Sensor
The IRB-4X infrared thru-beam photoeye is a non-contact safety sensor designed for automatic gate and door systems. It uses a lens-less infrared design to simplify alignment while maintaining reliable detection in harsh outdoor environments. With long-range performance up to 115 feet, fast response time, and a weatherproof enclosure, it is ideal for safety, reversing, and opening functions where monitored devices are not required.
- Infrared thru-beam safety sensor for gates and doors
- Operates up to 115 feet with fast response time
- 12 to 24 volt AC DC non-polarity power input
- Form C relay output with NO COM NC contacts
- NEMA 4X enclosure for outdoor and harsh environments
Lens-less through-beam infrared design simplifies alignment and enhances resistance to fog, dust, snow, and sunlight.
Provides reliable detection performance with an operating range of up to 115 feet (35 meters) between transmitter and receiver.
Operates on 12–24 V AC/DC non-polarity sensitive power, offering broad compatibility with various systems.
Equipped with Form C relay output (NO/COM/NC) rated at 1 A @ 24 VDC or 120 VAC for flexible integration.
Features fast ≤ 10 ms response time for immediate detection of obstructions or movement.
Housed in a rugged NEMA 4X weatherproof polycarbonate enclosure for outdoor durability.
Withstands extreme temperatures from –40 °F to +170 °F (–40 °C to +77 °C), suitable for harsh environments.
Includes LED indicators on both transmitter and receiver for easy setup and alignment verification.
Penetrates up to ~70% visual obstruction such as fog, steam, or spray for dependable operation.
Incorporates automatic temperature compensation and electronic sunlight filtering to maintain consistent function.
No need for external amplifiers or relay boxes, simplifying installation and reducing component count.
Optional sunshield and protective hoods available to reduce solar interference and physical damage.
Designed as a non-contact B1 external entrapment protection device for automatic gates and doors.
Not UL325 monitored safety compliant—intended for systems that do not require certified monitored devices.
Backed by a 2-year manufacturer warranty for assurance against defects in materials and workmanship.
| MODEL NAME | EMX 1152-1 IRB-4X |
| TYPE | Through-beam infrared photoeye safety sensor |
| APPLICATION | Automatic gates and door operators (safety, reversing, or opening device) |
| POWER INPUT | 12–24 V AC/DC (non-polarity sensitive) |
| CURRENT DRAW (TX) | ~37 mA |
| CURRENT DRAW (RX) | ~23 mA (standby), ~17 mA (detect) |
| RELAY OUTPUT | Form C contacts (NO/COM/NC) |
| RELAY CONTACT RATING | 1 A @ 24 VDC or 120 VAC |
| OPERATING RANGE | Up to ~115 ft (35 m) |
| RESPONSE TIME | ≤ 10 ms |
| OPERATING TEMPERATURE | –40 °F to +170 °F (–40 °C to +77 °C) |
| ENVIRONMENTAL RATING | NEMA 4X weather-proof enclosure |
| HOUSING MATERIAL | Polycarbonate / NEMA 4X enclosure |
| DIMENSIONS | ~3.7″ × 2.6″ × 2.2″ (L × W × H) |
| ALIGNMENT INDICATORS | LEDs on transmitter and receiver |
| LENS TYPE | Lens-less design |
| FEATURES | Electronic sunlight filter, automatic temperature compensation |
| OBSTRUCTION TOLERANCE | Penetrates up to ~70% visual obstruction |
| INSTALLATION KIT | Includes transmitter, receiver, protective hoods, and sunshield |
| OPTIONAL ACCESSORIES | IRB-HD-SET (aluminum hoods), IRB-SH-SET (steel hoods) |
| SURGE PROTECTION | Thermal fuse |
| LED INDICATION (TX) | Green - Power |
| LED INDICATION (RX) | Green - Power, Red - Beam blocked/not aligned |
| SENSITIVITY CONTROL | Adjustable gain (potentiometer) |
| WIRING REQUIREMENTS | Watertight fittings required (strain relief or conduit connector) |
| EARTH GROUND | Available if necessary in noisy installations |
| MONITORING COMPLIANCE | Not UL325 monitored compliant |
| SUITABILITY | Not suitable for monitored safety device-required applications |
| MANUFACTURER | EMX Industries, Inc. |
| SUPPORT CONTACT | technical@emxinc.com | 216-518-9889 |
| PRODUCT VERSION | IRB-4X_Rev2.1_062320 |
| TROUBLESHOOTING SUPPORT | Included in installation manual |
| WARRANTY | 2 years from date of sale |
EMX 1152-1 IRB-4X Infrared Photoeye Sensor from EMX Industries is a reliable, weather-resistant thru-beam photoeye designed for safety and access control with automatic gates and doors. Its lens-less design simplifies alignment and reduces false triggers from environmental interference such as fog, snow, dust, or sunlight. Ideal for residential, commercial, and industrial gate systems where non-contact safety detection is needed.
Rugged, Weatherproof Safety Performance
The IRB-4X is enclosed in a NEMA 4X-rated polycarbonate housing, providing robust protection against harsh weather. With a powerful operating range of up to 115 feet, it delivers dependable performance in extreme conditions, from –40°F to +170°F. LED indicators on both the transmitter and receiver make installation and real-time alignment status simple and intuitive.
- Lens-less design reduces misalignment issues
- Operates in fog, steam, spray, and sunlight
- NEMA 4X housing for outdoor durability
- Red LED indicator shows beam block or misalignment
- Works with up to 70% visual obstruction
Quick Installation and Flexible Integration
Running on 12–24V AC/DC power (non-polarity sensitive), the IRB-4X includes Form C relay output (NO/NC/COM) for easy integration with most gate and door operators. It includes automatic temperature compensation and requires no external relay boxes, reducing complexity and installation time. This model is sold in a kit including transmitter, receiver, sunshield, and optional hood sets.
- 12–24V AC/DC input, non-polarity sensitive
- Form C relay output: 1A @ 24VDC or 120VAC
- Relay activates when beam is blocked
- Response time ≤ 10 ms
- No UL325 monitoring – for non-monitored applications only
Installers and gate automation professionals seeking a durable, high-performance safety sensor will find the EMX 1152-1 IRB-4X delivers reliability and ease of use in the most challenging environments. Not UL325 monitored, this sensor is best suited for systems not requiring monitored safety devices.
Technical Specifications
- Model: EMX 1152-1 IRB-4X
- Power Input: 12–24V AC/DC
- Current Draw: TX – 37 mA; RX – 23 mA standby / 17 mA detect
- Relay Output: Form C (NO/NC/COM), 1A @ 24VDC / 120VAC
- Operating Range: Up to 115 ft (35 m)
- Response Time: ≤ 10 ms
- Temperature Range: –40°F to +170°F (–40°C to +77°C)
- Housing: NEMA 4X-rated polycarbonate
- Dimensions: 3.7″ × 2.6″ × 2.2″ (L × W × H)
- LED Indicators: Power (green), Beam block (red)
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