Schlage Electronics 674-OH Door Status Switch, Overhead Doors

The 674-OH is a door position switch: it detects whether an opening is open or closed and sends that status to a control panel. It's the sensing half of a monitored opening, not a lock or a release device. The OH version is intended for overhead doors.

That's the opening it's built for. The OH in 674-OH designates the overhead door version of the switch, so it's the one to specify for roll-up, sectional, and similar overhead openings rather than a swinging leaf. Door position switches in general are used for doors, roof hatches, and gates.

Neither. It only reports position. The switch tells a control panel whether the opening is open or closed; securing or releasing the door is a separate device entirely. Buyers monitoring a dock door or overhead gate for an alarm or access control system are buying the right part; buyers wanting to hold or release the door are not.

Different jobs. The 674-OH reports whether an opening is open or closed to a control panel. The RCI 960 Series is an SPDT switch for second position control, which is a switching function rather than a door position monitor. If you're monitoring an overhead door's status, the 674-OH is the part; if you need a second position contact in a device, look at the 960 Series.

The 674-OH is the overhead door model, identified by the OH suffix on the 674. Door position switches are made in a range of shapes and sizes for different openings, so for a swinging leaf you'd specify a different body style rather than the OH.

There's one configuration, 674OH. No handing, finish, or length to choose. Order it as the overhead door status switch and pair it with whatever control panel input you're wiring it to.

Yes, it's carried as a replacement part, so it's the item to order when the position switch on an overhead door has failed and the rest of the monitoring wiring stays in place.