LiftMaster 041-0136 Safety Sensor Kit - Snappy Sensors
The LiftMaster 041-0136 safety sensor kit is a replacement photo eye sensor set for select LiftMaster and Chamberlain garage door openers. It is commonly associated with the 41A5034 Snappy Sensor family used on many post-1997 opener applications.
The sending and receiving sensors mount near the bottom of the garage door opening and help detect obstructions while the door is closing. A failed, damaged, or misaligned sensor can cause the door to reverse, refuse to close from a remote, or flash the opener lights.
Compatible With
The 041-0136 kit is used with select LiftMaster and Chamberlain belt drive and chain drive openers. Compatibility depends on opener model, sensor style, and safety sensor wiring.
Common Compatible Applications
- Select LiftMaster belt drive garage door openers manufactured after 1997
- Select LiftMaster chain drive garage door openers manufactured after 1997
- Select Chamberlain belt drive garage door openers manufactured after 1997
- Select Chamberlain chain drive garage door openers manufactured after 1997
- Many myQ and SecureView style opener applications when confirmed by manual
Important Compatibility Notes
- Use only with compatible garage door opener safety sensor circuits
- Do not bypass safety sensors
- Check sensor mounting style and wiring
- Confirm whether the opener requires this Snappy Sensor style
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster / Chamberlain |
| Product Type | Safety reversing sensor kit |
| Part Number | 041-0136 |
| Related Part Number | 41A5034 / 41-0136 |
| Application | Garage door opener safety photo eye replacement |
| Compatible Operator Type | Select LiftMaster and Chamberlain belt and chain drive openers |
| Includes | Sending sensor, receiving sensor, 2-conductor wire, wire connectors, and replacement hardware depending on kit version |
Also Known As / Related Part Numbers
This part may be searched under related LiftMaster, Chamberlain, or older catalog number formats. Related numbers should be verified against the opener parts diagram before treating them as exact replacements.
- 041-0136
- 41-0136
- 41A5034
- 041A5034
- LiftMaster Snappy Sensors
- LiftMaster safety sensor kit
- Chamberlain safety sensor kit
- Garage door photo eyes
Technician Note
Safety sensors are part of the opener safety system. Do not bypass or defeat them to make the door close. If the sensors are failing, misaligned, or damaged, correct the problem before returning the opener to normal use.
Before Ordering, Confirm
- The opener uses compatible LiftMaster or Chamberlain safety sensors
- The sensor style matches the original Snappy Sensor setup
- The wiring is intact and not shorted or damaged
- The brackets and mounting points are usable
- The problem is not caused only by sensor misalignment or blocked lenses
Professional Advisory
After replacement, align the sensors and test the safety reversal system. If the door still will not close or reverses unexpectedly, inspect wiring, brackets, opener logic board, and door travel with a qualified garage door technician.
Important Ordering Warnings
- Never bypass safety sensors
- Not every LiftMaster opener uses the same sensor kit
- LED problems may also be caused by wiring or logic board issues
- Misalignment can look like sensor failure
- Use proper safety testing after installation
Questions & Answers
What does the 041-0136 sensor kit include?
The 041-0136 sensor kit commonly includes sending and receiving safety sensors with LEDs, 2-conductor wire, wire connectors, and replacement hardware.
Is 041-0136 the same as 41A5034?
041-0136 and 41A5034 are commonly associated safety sensor kit numbers, but the opener model and sensor style should be checked before ordering.
What type of openers use these sensors?
They are used with select LiftMaster and Chamberlain belt drive and chain drive garage door openers, including many post-1997 and myQ/SecureView applications when confirmed by manual.
Can safety sensors be bypassed?
No. Safety sensors should never be bypassed. A failed or misaligned sensor should be repaired or replaced to maintain safe door operation.
What symptoms indicate bad or misaligned sensors?
Common symptoms include the door reversing, not closing from the remote, blinking lights, or sensor LEDs that are off, dim, flickering, or not aligned.
