Which Manaras photo eye is the monitored one?

PHOTO070 is the monitored primary device that pairs with BOARD 070M. PHOTO075 (retro-reflective) and PHOTO077 (thru-beam) are non-monitored ancillary devices used to supplement a monitored primary or constant-pressure-to-close operation.

Why won't my commercial door close since a photo eye got bumped?

On a UL 325 monitored circuit, a failed or misaligned monitored device makes the operator refuse to close on momentary contact. That is designed behaviour, realign or repair the device and the door returns to normal.

When is a light curtain better than a photo eye?

When one beam height is not enough: pedestrian-heavy openings, mixed forklift traffic, or loads that overhang below a single beam. LIGHTCURTAIN001 protects 3 ft of height, LIGHTCURTAIN002 protects 6 ft.

What does a monitored sensing edge need that a non-monitored one doesn't?

SENSEDGE044UM requires the Signature Interface Module (INTERFACE002, sold separately) to report to BOARD 070M; the non-monitored SENSEDGE044U wires directly to BOARD 070E or electromechanical controls.

Manaras Photo Eyes, Light Curtains & Sensing Edges

Since ANSI/CAN/UL 325:2017, a commercial operator on a monitored circuit will not run in momentary-contact mode without a working, monitored primary entrapment protection device. This page is the map of what Manaras makes for that job, and which device your operator actually needs.

Monitored vs Non-Monitored (The Distinction That Matters)

Monitored devices talk to the operator’s BOARD 070M continuously; if the device fails or goes out of alignment, the board knows and refuses to close the door on momentary contact. These are your *primary* protection devices. Non-monitored devices are *ancillary*, legitimate supplements to a monitored primary or to constant-pressure-to-close operation, never a substitute for one.

The Devices

Device	Type	Key facts
PHOTO070	Monitored photo eye (primary)	Infrared thru-beam, Nema 1, ±2° alignment tilt, 30 ft cable and brackets included; pairs with BOARD 070M
PHOTO075	Non-monitored photo eye (ancillary)	Retro-reflective, IP67, PinPoint LED spot, long range, reflector and 2 m cable included
PHOTO077	Non-monitored photo eye (ancillary)	Thru-beam, IP67, PinPoint LED, long range, brackets and 2 m cable included
LIGHTCURTAIN001	Monitored light curtain (primary)	3 ft protection height, dense multi-beam barrier, IP67, no external interface box
LIGHTCURTAIN002	Monitored light curtain (primary)	Same design, 6 ft protection height
SENSEDGE044U	Non-monitored electric sensing edge	2-wire NO, cut to length (nearest 1/4″), vertical or horizontal mount; works with BOARD 070E and electromechanical controls
SENSEDGE044UM	Monitored electric sensing edge (primary)	Same edge, monitored; requires the Signature Interface Module INTERFACE002 (sold separately)

Photo Eye, Curtain or Edge?

A single photo eye guards one beam height, fine for most vehicle doors. A light curtain throws a dense barrier of beams 3 or 6 feet up the opening, which is what you want where pedestrians and forklifts mix, or where loads overhang below a single beam’s line. A sensing edge rides the door’s bottom edge itself and reacts to touch, the right answer on doors where the approach can’t be beam-protected, and the usual retrofit path on older doors. Many specifying engineers combine an edge with eyes; the devices are designed to co-exist as primary plus ancillary.

What Fails in the Field

Alignment, wiring damage and plain grime cause most photo eye calls, a forklift-clipped bracket or a fogged lens interrupts the beam as effectively as a person standing in it. On monitored circuits the symptom is always the same: the door refuses to close on momentary contact. One point that causes repeated confusion: on a UL 325 monitored circuit, a failed safety device makes the operator refuse to close. That is correct behaviour, not a malfunction. A door that suddenly will not close, with no other symptom, is very often a photo eye or sensing edge that has failed or drifted out of alignment. Sensing edges fail by conductor fatigue at the wire outlet and by physical damage along the edge; monitored edges add the interface module as one more link to test.

Manufacturer Documents

These pair with every current operator on the Manaras model reference; the board side is covered on the BOARD 070 and Internet Control page.

Supply and Installation Across Metro Vancouver

We stock, install, align and certify entrapment protection on Manaras operators across Metro Vancouver, including bringing older non-compliant doors up to current UL 325 monitored protection. Call (604) 206-5727.