The Marantec M8-705 Safety Sensor Kit (part number 97246) is an OEM photoelectric safety reversal system for select Marantec residential garage door openers. This replacement kit uses an infrared beam between a matched transmitter and receiver to detect obstructions in the door’s path and command the operator to stop and reverse, helping maintain UL 325 entrapment protection. It’s ideal as a direct replacement for worn, damaged, or missing photo eyes on Marantec operators that specifically call out M8-705/97246 in their parts documentation.
This is a hardwired, low-voltage photo eye set powered by the opener head and installed at the bottom of the door opening, typically no higher than 6 inches from the finished floor as required by safety standards. The sensors mount to the track or adjacent wall and are aligned face-to-face until their indicator LEDs confirm a clear, stable beam; no separate programming is normally required beyond correct wiring to the designated terminals and proper alignment. For best results, follow the opener’s manual for wiring polarity, mounting location, and alignment steps. These photo eyes are designed for compatible Marantec systems and are not universal or cross-compatible with other brands. If you are unsure of compatibility, verify your operator’s model and parts list for “M8-705” or “97246” before ordering.