When planning for electronic doors we need to understand the difference between Fail Safe and Fail Secure to ensure that we pick the right one for the purpose.
a good resource on this topic is: https://www.getkisi.com/blog/fail-safe-vs-fail-secure
Fail safe: The lock unlocks when power is removed
Fail secure: The lock unlocks when power is applied
The external doors for the house are all Fail secure because in the event of a power failure (or someone maliciously cutting the power at the curb) we don't want thieves to be able to access the house without any restriction. They will have emergency ("panic") push bars https://github.com/dwyl/door/issues/15 which will allow people to exit the building when power is cut.
When planning for electronic doors we need to understand the difference between Fail Safe and Fail Secure to ensure that we pick the right one for the purpose. a good resource on this topic is: https://www.getkisi.com/blog/fail-safe-vs-fail-secure
The external doors for the house are all Fail secure because in the event of a power failure (or someone maliciously cutting the power at the curb) we don't want thieves to be able to access the house without any restriction. They will have emergency ("panic") push bars https://github.com/dwyl/door/issues/15 which will allow people to exit the building when power is cut.
https://www.gokeyless.com/blog/fail-safe-fail-secure-decide-lock-right-door/
In the event of a Fire (or other emergency) we will need to
When searching for locks, the abbreviated "NO" is often used, this stands for "normally open" whereas "NC" is "normally closed".