The EMX 102-K-GOLD IRB-MON is a monitored thru-beam infrared photoeye kit designed as a Type B1 non-contact external entrapment protection device for automatic gates, doors, and barriers. The kit combines a separate infrared transmitter and receiver with gold anodized aluminum protective hoods and a receiver sunshield.
The IRB-MON was designed as a universal safety photoeye capable of supporting several different monitored interfaces. This allows the same photoeye family to work with a wide variety of gate and door operators, provided the operator supports one of the IRB-MON monitoring methods and is wired according to the operator and EMX instructions.
The transmitter sends an infrared beam across the protected opening to the receiver. When a person, vehicle, or object interrupts the beam, the receiver changes its output so the connected gate or door operator can respond according to its programmed safety function.
This is the gold-hood version of the original IRB-MON kit. Verify current packaged hardware before assuming that posts, conduit fittings, mounting brackets, wire, or other installation accessories are included.
The IRB-MON supports four different monitoring methods. The correct method is determined by the gate or door operator control board and must be verified from the operator manufacturer's current instructions.
Important: Two-wire pulse monitoring requires 6-35 VDC. AC power is not used for the two-wire pulse monitoring configurations. Verify the monitoring method and power supply before wiring the photoeye.
| Specification | Details |
|---|---|
| Brand | EMX Industries |
| Part Number | 102-K-GOLD / EMX-102-K (GOLD) |
| Product Family | IRB-MON |
| Product Type | Universal monitored thru-beam infrared photoeye kit |
| Safety Classification | Type B1 non-contact external entrapment protection device |
| UL Compliance | UL325-2018 compliant |
| Configuration | Thru-beam - separate transmitter and receiver |
| Operating Range | 5 ft minimum to 115 ft maximum |
| Power | 6-35 VDC or 12-24 VAC; pulse monitoring requires 6-35 VDC |
| NC / 10K Monitoring Current | Approximately 60 mA with relay activated |
| Pulse Monitoring Current | Approximately 15 mA |
| Relay Output | Form C - NO, COM, NC |
| Resistive Monitoring | 10K ohm termination |
| Monitoring Interfaces | Normally Closed, 10K, 2-frequency pulse, 3-frequency pulse |
| Sensitivity Adjustment | Receiver potentiometer |
| Indicators | Green transmitter power LED and green receiver alignment/detect LED |
| Surge Protection | Thermal fuse |
| Environmental Rating | NEMA 4X |
| Operating Temperature | -40F to 170F (-40C to 77C) |
| Sensor Dimensions | 2.3 x 2.6 x 3.7 in each |
| Approximate Sensor Weight | 0.35 lb transmitter; 0.35 lb receiver |
| Protective Hoods | Gold anodized aluminum |
The 102-K-GOLD configuration includes the gold anodized aluminum protective hood set associated with EMX designation IRB-HD-SET. The hoods help protect the transmitter and receiver from physical contact and environmental exposure while maintaining access to the infrared sensing path.
The gold hoods should not be confused with the gray IRB-MON hood option, which uses gray powder-coated steel protective hoods.
The IRB-MON uses a lens-less infrared design intended to simplify alignment and reduce problems associated with fogging and small objects on conventional lenses. The receiver includes an adjustable sensitivity potentiometer and green alignment indicator to help the installer establish the beam.
The transmitter and receiver must be positioned directly across from one another with a minimum spacing of 5 ft. EMX states that the original IRB-MON should not be used at detection distances shorter than 5 ft.
The IRB-MON is designed for operators that support monitored external entrapment devices and can also be configured for select older non-monitored applications using its relay output. However, compatibility cannot be determined by voltage or relay type alone.
Before ordering or installing the photoeye, check the gate or door operator manual to determine:
EMX publishes separate IRB-MON instructions for older blue receiver boards manufactured before June 2020 and red receiver boards manufactured after June 2020. When servicing an existing installation, identify the receiver-board generation before copying DIP-switch settings or wiring from another installation.
The same IRB-MON product family may therefore appear in installations using different receiver-board colors. Always use the instructions that match the actual receiver being serviced.
EMX currently identifies the original IRB-MON 102-K kits as products that are being phased out and lists the IRB-MON2 as the enhanced version of the original IRB-MON. The newer IRB-MON2 maintains a 115 ft maximum range and multiple monitoring methods but uses a redesigned housing and connection arrangement.
Do not assume the original IRB-MON and IRB-MON2 have identical housings, hoods, terminal blocks, or replacement accessories. If selecting equipment for a new installation rather than replacing an existing IRB-MON, compare the current IRB-MON2 before ordering.
The IRB-MON is an external entrapment protection device and must be installed according to the current gate or door operator instructions, EMX documentation, UL325 requirements, and applicable codes. The required mounting position and monitoring method depend on the operator and protected entrapment zone.
Do not bypass monitoring, defeat a photoeye input, substitute an unapproved relay connection, or use fail-secure configuration to avoid a required safety function. After installation, obstruct the beam at multiple locations and verify that the operator recognizes the safety input and responds correctly before returning the gate or door to service.
If the operator monitoring method, receiver generation, wiring, safety input, or required entrapment protection is unclear, use a qualified gate, garage door, commercial door, or access-control technician.
The kit includes the IRB-MON infrared transmitter, receiver, gold anodized aluminum protective hoods, and receiver sunshield. Verify current packaged hardware before assuming that posts, brackets, wire, or conduit fittings are included.
Yes. EMX identifies the IRB-MON as a UL325-2018 compliant Type B1 non-contact external entrapment protection device for compatible automatic gates and doors.
The IRB-MON supports monitored normally closed, 10K resistive termination, two-wire 2-frequency pulse, and two-wire 3-frequency pulse monitoring. The operator manual determines which method must be used.
The IRB-MON operates from 6-35 VDC or 12-24 VAC for applicable relay monitoring configurations. Two-wire pulse monitoring requires 6-35 VDC and cannot use AC power.
The manufacturer specifies a maximum operating range of 115 ft. EMX also states that the original IRB-MON should not be used at a detection distance shorter than 5 ft.
No universal model compatibility should be assumed. The IRB-MON supports several common monitoring interfaces, but the gate or door operator must accept the specific photoeye and monitoring method being used. Verify the operator manual before wiring.
The IRB-MON2 is EMX's enhanced version of the original IRB-MON and uses a redesigned housing and connection arrangement. Both support monitored thru-beam applications, but their housings, hoods, terminals, and accessories should not be assumed interchangeable.
EMX publishes separate instructions for blue receiver boards manufactured before June 2020 and red receiver boards manufactured after June 2020. Identify the receiver generation and follow the matching EMX wiring and configuration instructions when servicing an existing installation.