Motor Locks
Front Door
Locked
HomeKit supports motor locks to lock and unlock doors. Locks are special in HomeKit as they require your iOS device to be unlocked before interacting with a lock. The Home app also sends you push notification when a lock is locked or unlocked. That’s why a motor lock is commonly used for controling front doors.
In our example we are using the following group addresses.
| Address | Description |
|---|---|
| 0/0/1 | Unlocks (1) and locks (0) a motor lock |
| 0/1/1 | State if the lock is unlocked (1) or locked (0) |
The characteristics of the motor lock are then configured as follows.
| Characteristic | Data Type | Write | Read |
|---|---|---|---|
| State: Locked | DPST-1-19 | 0/1/1 | |
| State: Unlocked | DPT-1 | 0/1/1 | |
| Lock/Unlock | DPT-1 | 0/0/1 | 0/0/1 |
Note that we are using the data type DPST-1-19 for the characteristic “State: Locked”. This way the value 0 indicates that the lock is locked. The same group address is also used for the characteristic “State: Unlocked” but with a different data type.