Liftmaster K2A0878 Hall Effect Board hys-mx3557 QCC Loop Logic: Supports QCC

QCC Loop Logic: Supports QCC mode with external socket (slide gates only)

Use: Mounting plug-in loop detector modules

Loop Tester: Test loop for easy troubleshooting

maintenance-free operation

Liftmaster K2A0878 Hall Effect Board hys-mx3557 QCC Loop Logic: Supports QCCHall Effect Sensor Board for SL3000U & SL585U Gate Systems The LiftMaster K2A0878 is a Hall Effect replacement board engineered for use with LiftMaster SL3000UL and SL3000U commercial slide gate operators. This board enables precise detection of gate movement and position, which is critical for safe open close cycles, system diagnostics, and compliance with UL325 safety standards. It ensures smooth, consistent operation in high traffic or high