Electric lock opener for entrance door controlled with wall contact (photo 1) or with a transmitter (Picture 2).
The user has a transmitter with 6 push buttons and 20 different channels which can also control other functions in the house. A receiver sits by the lock.
The lock opener is usually connected to an automatic door opener. But the user only wanted to unlock the entrance door by remote control. The user mainly uses the button on the wall.
Abilia, www.abilia.se (last cecked May 2017)
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This tip is from 2005