MMTC HBF-CC / LiftMaster 02109U Interior Open-Close Changeable Core Key Switch
The MMTC HBF-CC is an interior, flush-mount open-close key switch used where a keyed command station is needed at a commercial door, gate, or controlled access point. It mounts in a single-gang back box and uses a stainless steel faceplate, making it a clean option for offices, equipment rooms, service doors, and interior wall stations where the switch is protected from weather.
This version is built for a changeable core cylinder, which is useful when the facility wants the keying to match an existing key-control program. The switch is center-return, so the key is used to send an open or close command and then returns to the neutral position. Correct wiring matters because this is not a full open-close-stop station and should not be selected when the operator requires a stop button at the same control point.
Use this item when replacing an existing HBF-CC, LiftMaster 02109U style station, or a similar interior open-close changeable-core key switch with the same mounting and wiring requirements.
Compatible With
- Commercial overhead door operators with compatible low-voltage key-control input terminals
- Commercial gate operators using dry-contact open/close command wiring
- Access-control stations where a keyed open-close command is required
- Select LiftMaster commercial/industrial operator control circuits when matched to the correct wiring type
- Applications replacing the same MMTC HBF-style interior flush-mount key switch
- Not a universal stop control; add or retain a separate stop button where the operator wiring or safety practice requires one
- MMTC HBF single-gang flush-mount key switch family when a changeable core cylinder is required
Also Known As / Related Part Numbers
- HBF-CC
- MMTC-HBF-CC
- HBF CC
- LiftMaster 02109U
- 02109U
- LiftMaster 02-109U
- 02-109U
- U-Change-It cylinder key switch
- Changeable core HBF key switch
- Related family: HBF, HBF-BC, HBFS-CC, HBF-SLF
Features & Specifications
| Manufacturer | MMTC |
| Product Type | Interior flush-mount key switch |
| Part Number | HBF-CC |
| Related LiftMaster Number | 02109U |
| Application | Keyed open-close command station |
| Mounting Style | Single-gang flush mount |
| Enclosure Rating | NEMA 1 interior |
| Cylinder Type | Changeable core cylinder |
| Faceplate | Stainless steel, 4-1/2 in H x 2-3/4 in W |
| Back Box | 4 in H x 2 in W x 2 in D |
| Function | Open-close, center return |
| Notes | Dry-contact command wiring; not a stop station |
Technician Note
Use the HBF-CC when the job specifically calls for a changeable core cylinder. It should not be swapped with HBF-BC, HBF, or SLF versions unless the cylinder system and keying plan are being changed on purpose.
Before Ordering Checklist
- Match the exact MMTC part number and cylinder type before ordering.
- Confirm the installation is interior NEMA 1 and flush mount single-gang style.
- Verify whether the job needs open-close only or a station with a separate stop button.
- Check the control board terminals and wiring diagram for dry-contact key switch inputs.
- Confirm keying requirements such as random keyed, keyed alike, Best/equivalent, or changeable core.
Professional Advisory
Key switch wiring should follow the operator manufacturer wiring diagram. Do not use a two-position key switch as a substitute for required monitored safety devices, emergency stop controls, or required egress hardware.
Important Ordering Warnings
- Interior NEMA 1 stations are not intended for wet or exterior mounting locations.
- Open-close key switches may not provide a stop function on many commercial operators.
Product Questions & Answers
What is the difference between HBF-CC and HBF-BC?
HBF-CC is for a changeable core cylinder. HBF-BC is for a Best cylinder or equivalent. The faceplate and general HBF style are similar, but the cylinder requirement is different.
Is this an outdoor key switch?
No. HBF-CC is an interior NEMA 1 flush-mount key switch. Use an exterior-rated key switch for exposed outdoor locations.
Does this key switch include a stop button?
No. This is an open-close center-return key switch. If the operator or job requires a stop button, use a station designed with a stop button.
Can this be used on a gate operator?
It may be used with select gate operators that accept dry-contact open-close key switch inputs. Always verify the operator terminals and wiring diagram.
Why does the cylinder type matter?
The cylinder style determines what lock core and key system the station can use. Matching the existing keying system is important for facility access control.
