The MMTC HBFX is an exterior-rated, NEMA 3R weather-resistant flush-mount key switch with standard mortise cylinder, designed for outdoor gate and door access-control installations. Providing two-position OPEN-CLOSE center-return momentary operation with no stop button, the HBFX is the base exterior single-gang key switch in the MMTC HBF product family. Rated 15A at 125/250V AC, it installs flush into a standard single-gang back box with a stainless steel faceplate suitable for post, wall, or pilaster mounting at outdoor access points.
A: The HBFX uses a two-position, center-return key switch that provides discrete Open and Close momentary commands. There is no stop or center-position button on this model.
A: Yes, the HBFX is designed for exterior use. It carries a NEMA 3R rating, making it suitable for outdoor installations exposed to weather such as rain and sleet.
A: The HBFX ships with a single-gang back box and is designed for flush mounting into a wall or post. The faceplate measures 4-1/2" H x 2-3/4" W and the back box is 4" H x 2" W x 2" D.
A: No. The base HBFX model uses a standard mortise cylinder. Tamperproof or Best/CORBIN cylinder variants would be designated by additional suffixes (e.g., BC, CC, or SLF) which are not present on the HBFX.
A: The HBFX is rated at 15A at 125/250V AC. A wiring guide is available as document A159-HBFX-WIRING-GUIDE.pdf for installation reference.