* Monitor single door normally open fire doors
* The circuit part and the wiring bottom case are plugged in for reliable contact and easy construction
* The address code is electronically encoded and can be written in advance by the electronic...
* Monitor single door normally open fire doors
* The circuit part and the wiring bottom case are plugged in for reliable contact and easy construction
* The address code is electronically encoded and can be written in advance by the electronic...
* Monitor single door normally closed fire door
* The circuit part and the wiring bottom case are plugged in for reliable contact and easy construction
* The address code is electronically encoded and can be written in advance by the electronic...
* Monitor double door normally closed fire door
* The circuit part and the wiring bottom case are plugged in for reliable contact and easy construction
* The address code is electronically encoded and can be written in advance by the electronic...
