Product Overview
The LiftMaster 041-0136 safety sensor kit is a replacement safety reversing sensor set for select LiftMaster and Chamberlain residential garage door openers. These photo eyes mount near the bottom of the garage door opening and create the safety beam that tells the opener whether the path of the door is clear. When the beam is blocked, misaligned, damaged, or the sensor electronics have failed, the opener may refuse to close, reverse back open, or flash the operator lights as a warning.
This kit is commonly used on modern LiftMaster and Chamberlain belt drive and chain drive garage door openers with myQ technology, including SecureView video camera style openers where applicable. It is associated with openers manufactured after 1997 and is sold as the 2021-to-present safety sensor kit design. Because LiftMaster has used more than one safety sensor and bracket style over the years, the opener model number and replacement parts diagram should be checked before ordering, especially on older units or when replacing a discontinued sensor assembly.
The kit includes both sides of the safety beam, wiring, connectors, and mounting hardware. It is intended to restore the required safety reversing function, not to defeat or bypass it. If the opener has wiring damage, damaged brackets, LED alignment problems, or repeated close-force issues, inspect the sensor path, wiring, and door operation before installing replacement parts.
Compatible With
Commonly associated with select LiftMaster and Chamberlain residential garage door openers in these applications:
- Belt drive garage door openers with myQ technology
- Chain drive garage door openers with myQ technology
- Select SecureView video camera garage door openers
- Compatible LiftMaster and Chamberlain residential openers manufactured after 1997
- 2021-to-present updated safety sensor kit applications
- Older safety sensor replacements when confirmed by the opener model and parts diagram
Use model-specific parts information before ordering. Older sensor kits, bracket styles, and replacement hardware may not interchange one-for-one on every opener.
Features & Specifications
| Manufacturer | LiftMaster / Chamberlain Group |
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| Product Type | Garage door opener safety sensor replacement kit |
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| Part Number | 041-0136 |
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| Application | Residential garage door opener safety reversing sensor system |
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| Compatible Operator Type | Select belt drive and chain drive myQ garage door openers |
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| Safety Monitoring | Safety reversing photo eye beam |
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| Included Components | Sending sensor with LED, receiving sensor with LED, 2-conductor wire, wire connectors, and replacement hardware |
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| Notes | For compatible openers after 1997 and updated 2021-to-present sensor kit applications; verify by model and parts diagram |
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Also Known As / Related Part Numbers
- 041-0136
- 41-0136
- 410136
- LiftMaster 0410136
- Chamberlain 041-0136
- 41A5034 / 041A5034 - commonly searched older safety sensor reference; verify before substituting
- 41A503 - commonly searched snappy sensor reference; verify before substituting
Technician Note
If the opener lights flash and the door will only close while holding the wall button, the safety sensor circuit is one of the first items to inspect. Check alignment, wiring, sun glare, damaged brackets, and LED status before replacing parts.
Before Ordering
- Confirm the opener model number from the motor head label.
- Compare the original sensor style and mounting bracket to the replacement kit.
- Inspect both sensor wires for cuts, corrosion, staples, or loose terminal connections.
- Do not order this kit for a gate operator or commercial door operator unless the parts diagram specifically calls for it.
- Do not bypass safety sensors to force the door to close.
Professional Advisory
Garage door safety sensors are required safety devices. If the door is binding, reversing with force, or moving unevenly, have the door and opener inspected by a qualified garage door technician before replacing electronics.
Product Questions & Answers
What openers use the LiftMaster 041-0136 safety sensor kit?
The 041-0136 kit is used with select LiftMaster and Chamberlain belt drive and chain drive garage door openers with myQ technology and SecureView video camera systems. It is commonly listed for openers manufactured after 1997, with the updated 2021-to-present sensor kit design.
Does the 041-0136 kit include both safety sensors?
Yes. This kit includes the sending sensor, receiving sensor, 2-conductor wire, wire connectors, and replacement mounting hardware for a complete safety sensor replacement.
Is 041-0136 the same as the older 41A5034 sensor kit?
041-0136 is commonly searched as a replacement path for older LiftMaster and Chamberlain safety sensor kits such as 41A5034 or 041A5034, but bracket style and opener generation still matter. Match the opener model and parts diagram before ordering.
Why would I replace the garage door safety sensors?
Common reasons include a door that will not close, flashing opener lights, damaged sensor housings, broken brackets, failed LED alignment, or sensor wiring that has been cut or corroded.
Can I bypass the safety sensors instead of replacing them?
No. Safety reversing sensors are required safety devices. Do not bypass them. If the door will not close or the sensors will not align, replace the failed parts or have a qualified garage door technician inspect the opener.
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