Some "cat flap" type pet doors incorporate a "4-way"
locking mechanism. These locks allow 4 settings:
- In-Only - When the pet comes in, he
cannot go back out again. One possible use would be a case where
you want the pet in at night. You set the pet door for "in only"
in the evening.
- Out-Only - When the pet goes out, he
cannot come back in again. A possible use for this setting would
be a case where you want the pet out during the day. You'd set
the flap on "out only" in the morning.
- Locked - This setting allows no entry
in either direction.
- Open - This setting allows entry in
both directions.
Sometimes, the 4-way locking mechanism is incorporated
in an electronic pet door. In these cases, the 4-way lock may over-ride
the electronics. For example, your cat wears a collar key so only he may
come in your pet door. But, if your pet door is also set for 'out only'
no animal, including your cat, may come in.
Cat flaps with 4-way locks always have rigid flaps
which are necessary for the mechanism to work.
To the right are two examples of pet doors that incorporate a 4-way
lock. There are several others. |
A Staywell 300 Cat Flap
The red knob is the '4-way' lock
A Staywell 400 Magnetic Cat Flap with Built in 4-Way Lock
|
