FSH adaptor plate for existing Wells Fargo SM3 retrofit.

Existing screw holes attach this plate to the door frame, and the FSS1 attaches to this adaptor plate.

The two screw holes within the FSS1 cases are used to attach the FSS1 to the adaptor plate.

One of the existing SM3 mounting screws is obscured by the FSS1, so attempts to remove the sensor from the frame will trigger a tamper alarm.

Adaptor plate is required for both the old sensor and its magnet.