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  1. Home
  2. Safety Sensors
  3. Liftmaster

LiftMaster Safety Sensors

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Products [19]

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Liftmaster LMRRU Monitored Retro Reflective Photo Eye
LiftMaster LMRRUL Monitored Retro-Reflective Photo Eye
$211.27
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Liftmaster 41A5034 Snappy Sensors (1999-Current)
LiftMaster 041-0136 Safety Sensor Kit - Snappy Sensors
$34.62
(3)
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Liftmaster CPS-OPEN4 Monitored Dual-Sided Photo Eyes
LiftMaster CPS-OPEN4 Monitored Dual-Sided Photo Eyes
$89.95
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Liftmaster CPS-RPEN4 Monitored Retro-Reflective Photo Eye for Commercial Door Applications
LiftMaster CPS-RPEN4 Monitored Retro-Reflective Photo Eye
$139.95
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Liftmaster CPS Commercial Protector System
Liftmaster CPS Commercial Protector System
$187.78
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Liftmaster CPS-N4 Commercial Protector System® with NEMA 4 Enclosure for Mechanical Operators
Liftmaster CPS-N4 Commercial Protector System with NEMA 4 Enclosure for Mechanical Operators
$256.00
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Liftmaster CPS3 Option Card with CPS-L Photo-Eyes for Applications Requiring Two Sets of Photo-Eyes
Liftmaster CPS3 Option Card with CPS-L Photo-Eyes for Applications Requiring Two Sets of Photo-Eyes
$201.42
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Liftmaster CPS3-N4 Option Card w/ CPS-L Photo-Eyes w/ NEMA 4 Enclosure for Apps Requiring 2 Sets of Photo-Eyes
Liftmaster CPS3-N4 Option Card w/ CPS-L Photo-Eyes w/ NEMA 4 Enclosure for Apps Requiring 2 Sets of Photo-Eyes
$268.60
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Liftmaster CPS-U Commercial Photo Eye
Liftmaster CPS-U Commercial Photo Eye
$99.95
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Liftmaster RDGRNCARD Warning Device Option Board with Red/Green Light Box
Liftmaster RDGRNCARD Warning Device Option Board with Red/Green Light Box
$127.99
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Liftmaster CPS-UN4 Commercial Protector System
Liftmaster CPS-UN4 Commercial Protector System
$136.45
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Liftmaster LMWEKITU Monitored Wireless Edge Kit NEMA 4X rated Bluetooth® 130 ft
Liftmaster LMWEKITU Monitored Wireless Edge Kit NEMA 4X rated Bluetooth 130 ft
$155.95
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Liftmaster LMWETXU Monitored Wireless Edge Transmitter NEMA 4X rated Bluetooth®
Liftmaster LMWETXU Monitored Wireless Edge Transmitter NEMA 4X rated Bluetooth
$79.75
(1)
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Liftmaster LMTBUL 90ft Monitored Through Beam Photo Eyes w/ Wider Beam UL 325
LiftMaster LMTBUL 90 ft Monitored Through-Beam Photo Eyes
$247.76
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Liftmaster LWLOOP Monitored Wireless Edge Kit and Plug In Loop Detector
Liftmaster LWLOOP Monitored Wireless Edge Kit and Plug In Loop Detector
$258.12
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Replacement Reflector for Safety Sensors Photo Eyes - Ormon, EMX, Seco-Larm
Replacement Reflector for Retroreflective Photo Eye Safety Sensors
$8.95
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LiftMaster K41-39254 Reflector and Bracket Kit
LiftMaster K41-39254 Reflector and Bracket Kit
$94.95
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SECO-LARM E-931ACC-R2Q Square Reflector for Photoelectric Beam Sensors
SECO-LARM E-931ACC-R2Q Square Reflector for Photoelectric Beam Sensors
$18.95
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LiftMaster RGL24LY Red - Green Light
LiftMaster RGL24LY Red - Green Light
$399.95
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pagination

Frequently Asked Questions : LiftMaster Safety Sensors


Q1: What is the primary function of LiftMaster safety sensors?

A1: LiftMaster safety sensors project an invisible infrared beam across a garage door or gate opening to provide monitored entrapment protection. If an object breaks this beam while the door or gate is closing, the operator will stop and reverse direction to prevent injury or damage.

Q2: Are LiftMaster safety sensors compatible with all garage door openers?

A2: LiftMaster sensors are specifically engineered for compatibility with LiftMaster, Chamberlain, and Craftsman operators. It is necessary to verify the model number and manufacture date of the motor head to ensure the replacement sensors communicate correctly with the internal logic board.

Q3: How do the LED diagnostic lights on LiftMaster sensors function?

A3: LiftMaster safety sensors utilize LED indicators to communicate operational status. A solid amber light on the sending unit and a solid green light on the receiving unit confirm proper power and alignment, while a flickering or unlit green LED indicates a misalignment or obstruction.

Q4: What is the standard mounting height for LiftMaster safety sensors?

A4: To comply with UL 325 safety standards, garage door safety sensors must be mounted no higher than six inches above the floor. This specific placement ensures that low-profile obstructions, small objects, or pets are effectively detected by the infrared beam.

Q5: Can environmental factors interfere with LiftMaster infrared sensors?

A5: Direct sunlight striking the receiving lens at certain angles can saturate the sensor, creating a condition that mimics an obstruction. Additionally, accumulations of dust, cobwebs, or condensation on the lenses can disrupt the infrared beam and prevent the operator from closing.

Q6: What type of wiring is required for LiftMaster safety sensors?

A6: These devices typically require a two-conductor bell wire to connect the transmitter and receiver to the logic board. The wiring transmits both the low-voltage operating power and the continuous monitoring signal required for fail-safe operation.

Q7: Can a garage door operate if the LiftMaster sensors are misaligned?

A7: No, if the sensors lose alignment, the continuous infrared connection is broken, and the logic board will register an entrapment fault. The system will prevent the operator from closing the door via standard remotes or wall buttons to prioritize safety.

Q8: Do LiftMaster safety sensors meet current safety standards?

A8: Yes, LiftMaster manufactures monitored entrapment protection devices that fully comply with UL 325 standards. The operator logic board continuously monitors the presence and functionality of the safety circuit, refusing to operate if a fault is detected.

Q9: What routine maintenance ensures optimal sensor functionality?

A9: Routine maintenance primarily involves keeping the transmitter and receiver lenses free from dust and debris by wiping them with a clean, dry cloth. Users should also visually inspect the mounting brackets to ensure they are securely fastened and protected from physical impact.

Q10: What should be done if a safety sensor consistently malfunctions?

A10: If a sensor unit fails to respond despite proper alignment and clean lenses, there may be internal component damage or compromised low-voltage wiring. For detailed electrical diagnostics or the installation of replacement hardware, consult the original equipment manual or hire a qualified local professional.
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Local Pickup Available:  10900 NW 146th Street, Ste 107, Hialeah Gardens, FL 33018: 
Skip the shipping and pick up your order directly from our Hialeah Gardens warehouse. We’re centrally located and proud to serve customers in Hialeah, Miami, Doral, Miami Lakes, Miramar, Pembroke Pines, SouthWest Ranches, and many surrounding areas.  Call us for Directions - 305-696-5443
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